H. Itokawa

发表

Plant-derived natural product research aimed at new drug discovery

K. Lee, S. Morris-Natschke, H. Itokawa, 2008, Journal of Natural Medicines.

Asian Herbal Products: The Basis for Development of High-Quality Dietary Supplements and New Medicines

M. Kozuka, K. Lee, H. Itokawa, 2005 .

Anti-tumor agents 255: novel glycyrrhetinic acid-dehydrozingerone conjugates as cytotoxic agents.

K. Lee, S. Morris-Natschke, H. Itokawa, 2007, Bioorganic & medicinal chemistry.

A pungent principle from Alpinia oxyphylla

H. Itokawa, R. Aiyama, A. Ikuta, 1982 .

Cytotoxic diterpenes from the rhizomes of Hedychium coronarium.

H. Morita, A. Cavalheiro, H. Itokawa, 1988, Planta medica.

Alkaloids from Cephalotaxus harringtonia

H. Itokawa, I. Yasuda, K. Takeya, 1996 .

Studies on the constituents of Japanese mistletoes from different host trees, and their antimicrobial and hypotensive properties.

H. Itokawa, K. Takeya, T. Fukunaga, 1989, Chemical & pharmaceutical bulletin.

Chapter 4 Macrocyclic Peptide Alkaloids From Plants

H. Morita, H. Itokawa, K. Takeya, 1997 .

Anthraquinones and naphthohydroquinones from Rubia cordifolia

H. Itokawa, K. Takeya, Y. Qiao, 1989 .

Biotransformation of cannabinoid precursors and related alcohols by suspension cultures of callus induced from Cannabis sativa L.

H. Itokawa, K. Takeya, S. Mihashi, 1977, Chemical & pharmaceutical bulletin.

Eurylene, a new squalene-type triterpene from Eurycoma longifolia

H. Morita, H. Itokawa, Y. Iitaka, 1991 .

Squalene derivatives from Eurycoma longifolia

H. Morita, H. Itokawa, Y. Iitaka, 1993 .

Segetalin A, a new cyclic hexapeptide from vaccaria segetalis

H. Morita, H. Itokawa, K. Takeya, 1994 .

Recent advances in the investigation of curcuminoids

K. Lee, S. Morris-Natschke, H. Itokawa, 2008, Chinese medicine.

Diterpenes from the rhizomes of Alpinia formosana

H. Morita, H. Itokawa, Shinji Yoshimoto, 1988 .

Diterpenes from rhizomes of Hedychium coronarium.

H. Morita, H. Itokawa, K. Takeya, 1988, Chemical & pharmaceutical bulletin.

Cyclic Peptides from Higher Plants. 33.† Delavayins A−C, Three New Cyclic Peptides from Stellaria delavayi

H. Morita, H. Itokawa, K. Takeya, 1997 .

Two Novel Cyclic Peptides, Yunnanins A and B from Stellaria yunnanensis

H. Morita, H. Itokawa, K. Takeya, 1994 .

Cytotoxic trichilin-type limonoids from Melia azedarach.

H. Itokawa, K. Takeya, C. Hirobe, 1996, Bioorganic & medicinal chemistry.

Cytotoxic azadirachtin-type limonoids from Melia azedarach.

H. Itokawa, K. Takeya, C. Hirobe, 1996, Phytochemistry.

Plant‐Derived Natural Products Research in Drug Discovery

K. Lee, S. Morris-Natschke, H. Itokawa, 2012 .

Plant-Derived Natural Products Research: Recent Progress in Drug Discovery

K. Lee, S. Morris-Natschke, H. Itokawa, 2008 .

Isolation, structural elucidation and conformational analysis of sesquiterpene pyridine alkaloids from Maytenus ebenifolia Reiss. X-Ray molecular structure of ebenifoline W-I

H. Morita, H. Itokawa, O. Shirota, 1993 .

Antitumor substances from higher plants

H. Itokawa, K. Takeya, 2010 .

Anthraquinones, naphthohydroquinones and naphthohydroquinone dimers from Rubia cordifolia and their cytotoxic activity.

H. Itokawa, K. Takeya, Z. Ibraheim, 1993, Chemical & pharmaceutical bulletin.

New antitumor bicyclic hexapeptides, RA-XI, -XII, -XIII and -XIV from Rubia cordifolia.

H. Morita, H. Itokawa, K. Takeya, 1992, Chemical & pharmaceutical bulletin.

Studies on a Novel Anthraquinone and Its Glycosides isolated from Rubia cordifolia and R. akane

H. Itokawa, K. Takeya, K. Mihara, 1983 .

Conformational analysis of antitumor cyclic hexapeptides, RA series

N. Tomioka, A. Itai, H. Morita, 1991 .

An antitumor principle from Euphorbia lathyris.

H. Itokawa, K. Takeya, Y. Ichihara, 1989, Planta medica.

RA-III lactone, a 19-membered ring analogue of RAs, antitumor cyclic hexapeptide

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1994 .

Phenolic plant growth inhibitors from the flowers of Cucurbita pepo

T. Adachi, H. Itokawa, H. Inatomi, 1982 .

Conformational Analysis of a Marine Antineoplastic Macrolide, Bryostatin 10.

H. Morita, H. Itokawa, D. L. Herald, 1996 .

Diarylheptanoids from the Rhizomes of Curcuma xanthorrhiza and Alpinia officinarum

S. Uehara, H. Morita, H. Itokawa, 1987 .

[Antitumor compounds isolated from higher plants].

H. Morita, H. Itokawa, K. Takeya, 1999, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Constituents of the Rhizomes of Alpinia rafflesiana

H. Morita, H. Itokawa, H. Sirat, 1996 .

A taxoid from Taxus cuspidata var. nana

Y. Yamamura, H. Morita, H. Itokawa, 1997 .

Cyclic octapeptides from Stellaria dichotoma var. lanceolata.

H. Morita, H. Itokawa, K. Takeya, 1997, Phytochemistry.

Thionation of segetalins A and B, cyclic peptides with estrogen-like activity from seeds of Vaccaria segetalis.

H. Morita, H. Itokawa, O. Shirota, 1997, Bioorganic & medicinal chemistry.

A cyclic heptapeptide from Vaccaria segetalis.

H. Morita, H. Itokawa, O. Shirota, 1996, Phytochemistry.

Studies on Rubia akane(RA) derivatives. Part 10. Backbone transformation of RA-VII, an antitumour cyclic hexapeptide, through thionation. X-Ray crystal structure of [Tyr-3-Ψ(CH2NH)-Ala-4]RA-VII

S. Sasaki, H. Itokawa, K. Yamaguchi, 1996 .

Thionation of an antitumour cyclic pentapeptide, astin B, from Aster tataricus

H. Morita, H. Itokawa, K. Takeya, 1995 .

Cyclic Peptide from Higher Plants. Part 14. Two Novel Cyclic Peptides, Yunnanins A and B from Stellaria yunnanensis.

H. Morita, H. Itokawa, K. Takeya, 1995 .

Pseudostellarin G, a new tyrosinase inhibitory cyclic octapeptide from Pseudostellaria heterophylla☆

H. Morita, H. Itokawa, K. Takeya, 1994 .

Distribution of unsaturated aliphatic acid amides in japanese Zanthoxylum species

H. Itokawa, I. Yasuda, K. Takeya, 1982 .

Two New Pungent Principles isolated from the Pericarps of Zanthoxylum ailanthoides

H. Itokawa, I. Yasuda, K. Takeya, 1981 .

Antitumor agents. Part 214: synthesis and evaluation of curcumin analogues as cytotoxic agents.

K. Lee, J. Ishida, M. Nagai, 2002, Bioorganic & medicinal chemistry.

Antitumor agents 222. Synthesis and anti-androgen activity of new diarylheptanoids.

Chawnshang Chang, K. Lee, Zhiyan Xiao, 2003, Bioorganic & medicinal chemistry.

Antitumor agents. 217. Curcumin analogues as novel androgen receptor antagonists with potential as anti-prostate cancer agents.

Chawnshang Chang, K. Lee, J. Ishida, 2002, Journal of medicinal chemistry.

4-Aza-2,3-dehydro-4-deoxypodophyllotoxins: simple aza-podophyllotoxin analogues possessing potent cytotoxicity.

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 2000, Bioorganic & medicinal chemistry letters.

Diterpenoids from Eragrostis ferruginea

H. Itokawa, K. Takeya, K. Nishiya, 1991 .

Nine regioisomeric and stereoisomeric triterpene dimers from Maytenus chuchuhuasca.

M. Satake, H. Morita, H. Itokawa, 2004, Chemical & pharmaceutical bulletin.

Cytotoxic sesquiterpenes from Nardostachys chinensis.

H. Morita, H. Itokawa, K. Takeya, 1993, Chemical & pharmaceutical bulletin.

Cytotoxic and Antifungal Diterpenes from the Seeds of Alpinia galanga

H. Morita, H. Itokawa, 1988, Planta medica.

Dichotomins J and K, vasodilator cyclic peptides from Stellaria dichotoma.

H. Morita, H. Itokawa, K. Takeya, 2005, Journal of Natural Products.

Anthraquinones, naphthoquinones and naphthohydroquinones from Rubia oncotricha

H. Itokawa, K. Takeya, Y. Qiao, 1991 .

SYNTHESIS OF 4-OXA-2-AZAPODOPHYLLOTOXIN, A NOVEL ANALOG OF THE ANTITUMOR LIGNAN PODOPHYLLOTOXIN

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1994 .

A facile synthesis of the 4-aza-analogs of 1-arylnaphthalene lignans chinensin, justicidin B, and Taiwanin C

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1997 .

Antitumor principles from Ginkgo biloba L.

Y. Asakawa, H. Itokawa, J. Lepoittevin, 1987, Chemical & pharmaceutical bulletin.

Cyclolinopeptides F-I, cyclic peptides from linseed.

H. Morita, H. Itokawa, T Matsumoto, 2001, Phytochemistry.

Cyclolinopeptides B - E, new cyclic peptides from Linum usitatissimum

Teruki Matsumoto, Hiroshi Morita, H. Morita, 1999 .

Cyclic peptides from higher plants. 39. Dichotomins F and G, cyclic peptides from Stellaria dichotoma var. lanceolata

H. Morita, H. Itokawa, K. Takeya, 1997 .

Estrogen-Like Activity of Cyclic Peptides from Vaccaria segetalis Extracts1

H. Morita, H. Itokawa, K. Takeya, 1995, Planta medica.

Pseudostellarins D - F, new tyrosinase inhibitory cyclic peptides from Pseudostellaria heterophylla

H. Morita, H. Itokawa, K. Takeya, 1994 .

Two antitumour bicyclic hexapeptides from Rubia cordifolia.

H. Morita, H. Itokawa, K. Takeya, 1993, Phytochemistry.

Samoquasine A, a benzoquinazoline alkaloid from the seeds of Annona squamosa.

H. Morita, K. Chan, J. Kobayashi, 2000, Journal of natural products.

4-Aza-2,3-dehydro-4-deoxypodophyllotoxins: simple aza-podophyllotoxin analogues possessing potent cytotoxicity.

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 2000, Bioorganic & medicinal chemistry letters.

Conformational analysis of rhazinilam and three-dimensional quantitative structure-activity relationships of rhazinilam analogues.

H. Morita, J. Kobayashi, H. Itokawa, 2005, Bioorganic & medicinal chemistry letters.

Cytotoxic triterpenes from Cleome africana.

H. Itokawa, O. B. Abdel-Halim, K. Takeya, 1997, Phytochemistry.

Structure of a new cyclic nonapeptide, segetalin F, and vasorelaxant activity of segetalins from Vaccaria segetalis.

H. Morita, H. Itokawa, M. Sekiguchi, 2006, Bioorganic & medicinal chemistry letters.

Bufobutanoic acid and bufopyramide, two new indole alkaloids from the Chinese traditional drug Ch'an Su

H. Morita, T. Nogawa, H. Itokawa, 1999 .

CRYSTAL AND SOLUTION STATE CONFORMATIONS OF TWO TAXOIDS, TAXININE AND TAXININE B

H. Morita, J. Kobayashi, H. Itokawa, 1997 .

A novel condensed tropone-isoquinoline alkaloid, pareitropone, from Cissampelos pareira

H. Morita, H. Itokawa, K. Takeya, 1995 .

Conformation of tropolone ring in antileukemic tropoloisoquinoline alkaloids.

H. Morita, H. Itokawa, K. Takeya, 1993, Chemical & pharmaceutical bulletin.

Structures and solid state tautomeric forms of two novel antileukemic tropoloisoquinoline alkaloids, pareirubrines A and B, from Cissampelos pareira.

H. Morita, H. Itokawa, Y. Iitaka, 1993, Chemical & pharmaceutical bulletin.

ISOLATION AND STRUCTURE OF CONVOLUTAMYDINES B D FROM MARINE BRYOZOAN AMATHIA CONVOLUTA

K. Komiyama, H. Itokawa, G. Pettit, 1995 .

Astins A and B, antitumor cyclic pentapeptides from Aster tataricus.

H. Morita, H. Itokawa, K. Takeya, 1993, Chemical & pharmaceutical bulletin.

Identification and structure-activity relationship studies of osthol, a cytotoxic principle from Cnidium monnieri

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1996 .

Homoharringtonine and related compounds

K. Lee, Xihong Wang, H. Itokawa, 2005 .

Studies on Rubia akane(RA) derivatives. Part 7. Thioamide analogues of RAs: antitumour cyclic hexapeptides

H. Itokawa, Y. Matsumoto, K. Takeya, 1994 .

Synthesis of (−)-4-aza-4-deoxypodophyllotoxin from (−)-podophyllotoxin

H. Morita, H. Itokawa, K. Takeya, 1999 .

Total Synthesis of Taxoids

K. Lee, Zhiyan Xiao, H. Itokawa, 2004 .

Studies on the Constituents of the Seeds of Alpinia katsumadai HAYATA

H. Itokawa, R. Aiyama, A. Ikuta, 1983 .

Macrocarpals H, I, and J from the Leaves of Eucalyptus globulus.

H. Morita, H. Itokawa, K. Takeya, 1996, Journal of natural products.

Eucalyptone from Eucalyptus globulus.

H. Morita, H. Itokawa, K. Takeya, 1995, Phytochemistry.

Honokiol, a New Phenolic Compound isolated from the Bark of Magnolia obovata THUNB

H. Itokawa, Y. Sashida, M. Fujita, 1972 .

Recent progress of research on medicinal mushrooms, foods, and other herbal products used in traditional Chinese medicine

K. Lee, S. Morris-Natschke, H. Itokawa, 2012, Journal of traditional and complementary medicine.

Labdane and Bisnorlabdane Type Diterpenes from Alpinia speciosa K. SCHUM.

H. Itokawa, S. Mihashi, M. Morita, 1980 .

Steroidal saponins from the leaves of Cestrum sendtenerianum.

H. Morita, H. Itokawa, K. Takeya, 2000, Phytochemistry.

Biscoclaurine alkaloids in callus tissues of Stephania cepharantha

H. Itokawa, M. Akasu, M. Fujita, 1976 .

Studies on the Constituents isolated from the Callus of Cannabis stativa L.

H. Itokawa, K. Takeya, M. Akasu, 1975 .

Structures of Isoagastachoside and Agastachin, New Glucosylflavones isolated from Agastache rugosa

H. Itokawa, K. Takeya, K. Suto, 1981 .

Triterpenoids of Paeonia japonica callus tissue

H. Itokawa, A. Ikuta, 1988 .

Guaiane sesquiterpene lactones from Curcuma aeruginosa

H. Itokawa, I. Yasuda, K. Takeya, 1995 .

New diterpenes from Alpinia galanga Wild.

H. Morita, H. Itokawa, 1986 .

Studies on the constituents of Goat's Rue (Galega officinalis L.).

H. Itokawa, K. Takeya, T. Fukunaga, 1987 .

Cajucarinolide and isocajucarinolide: anti-inflammatory diterpenes from Croton cajucara.

H. Morita, H. Fujiki, M. Suganuma, 1992, Planta medica.

Anti-AIDS agents. Part 57: Actein, an anti-HIV principle from the rhizome of Cimicifuga racemosa (black cohosh), and the anti-HIV activity of related saponins.

Kazuo Koike, K. Koike, T. Nikaido, 2004, Bioorganic & medicinal chemistry letters.

2-O-acetyl chlidanthine; an alkaloid from Haemanthus multiflorus

A. Ali, H. Itokawa, O. M. Abdallah, 1989 .

Azafluoranthene Alkaloids from Cissampelos pareira

Kouji Matsumoto, H. Morita, H. Itokawa, 1993 .

Cytotoxic naphthoquinones from Mansoa alliacea

Kouji Matsumoto, H. Morita, H. Itokawa, 1992 .

New Quassinoids from the Roots of Eurycoma longifolia

H. Morita, O. Tanaka, H. Itokawa, 1990 .

The first total synthesis of deoxybouvardin and RA-VII, novel antitumor cyclic hexapeptides

H. Itokawa, K. Ogura, S. Mihashi, 1987 .

Studies on the antitumor bisabolane sesquiterpenoids isolated from Curcuma xanthorrhiza.

F. Hirayama, H. Itokawa, K. Takeya, 1985, Chemical & pharmaceutical bulletin.

[Terpenoids and curcuminoids of the rhizoma of Curcuma xanthorrhiza Roxb].

S. Uehara, H. Itokawa, I. Yasuda, 1992, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Phenolic compounds from the rhizomes of Alpinia speciosa

H. Itokawa, S. Mihashi, M. Morita, 1981 .

A Novel Antileukemic Tropoloisoquinoline Alkaloid, Pareirubrine (I), from Cissampelos pareira.

Kouji Matsumoto, H. Morita, H. Itokawa, 1993 .

Cajucarins A and B, New Clerodane Diterpenes from Croton cajucara, and Their Conformations

H. Itokawa, K. Takeya, M. Motidome, 1990 .

Nor-clerodane diterpenes from Croton cajucara

H. Itokawa, H. Kojima, Kinzo Watanabe, 1989 .

Triterpenes from Brazilian Medicinal Plant “Chuchuhuasi” (Maytenus krukovii)

H. Morita, H. Itokawa, O. Shirota, 1996 .

Biphenylneolignans from wood of Eurycoma longifolia

H. Morita, H. Itokawa, K. Takeya, 1992 .

The Geometric Structure of Spilanthol

H. Itokawa, I. Yasuda, K. Takeya, 1980 .

Cytotoxic flavonoids from Vitex agnus-castus.

H. Itokawa, K. Takeya, C. Hirobe, 1997, Phytochemistry.

Studies on a Novel p-Coumaroyl Glucoside of Apigenin and on Other Flavonoids isolated from Patchouli (Labiatae)

H. Itokawa, K. Takeya, K. Suto, 1981 .

Structure-cytotoxic activity relationship for the toad poison bufadienolides.

M. Inoue, H. Morita, H. Itokawa, 1998, Bioorganic & medicinal chemistry.

Isoflavanones from the heartwood of Swartzia polyphylla and their antibacterial activity against cariogenic bacteria.

H. Morita, H. Itokawa, K. Takeya, 1992, Chemical & pharmaceutical bulletin.

Malabanones A and B, novel nortriterpenoids from Ailanthus malabarica DC

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 2001 .

The Study on the Constituents of Clematis and Akebia sp. III. The Study on the structures of Akebosides isolated from the Stem of Akebia quinata DECNE.

H. Itokawa, M. Fujita, Y. Kumekawa, 1974 .

Acid-catalyzed Rearrangement of Hinesol and Related Compounds to Eudesmane Derivatives

H. Nakanishi, H. Itokawa, S. Mihashi, 1983 .

NEW ARBORANE TYPE TRITERPENOIDS FROM RUBIA CORDIFOLIA VAR. PRATENSIS AND R. ONCOTRICHA

H. Itokawa, K. Takeya, Y. Qiao, 1990 .

Anthraquinones from the polar fractions of Galium sinaicum.

M. Amer, H. Itokawa, K. Takeya, 1996, Phytochemistry.

ANTHRAQUINONES FROM GALIUM SINAICUM

M. Amer, H. Itokawa, K. Takeya, 1995 .

Cycloleonuripeptides E and F, cyclic nonapeptides from Leonurus heterophyllus.

H. Morita, H. Itokawa, K. Takeya, 2006, Journal of natural products.

Cycloleonuripeptide D, a new proline-rich cyclic decapeptide from Leonurus heterophyllus

H. Morita, H. Itokawa, Y. Iitaka, 1997 .

CYCLOLEONURIPEPTIDES A, B AND C, THREE NEW PROLINE-RICH CYCLIC NONAPEPTIDES FROM LEONURUS HETEROPHYLLUS

H. Morita, H. Itokawa, K. Takeya, 1996 .

Studies on antitumor cyclic hexapeptides RA obtained from rubiae radix, rubiaceae. VI. Minor antitumor constituents.

H. Itokawa, K. Takeya, S. Mihashi, 1986, Chemical & pharmaceutical bulletin.

Solution state conformation of an immunosuppressive cyclic dodecapeptide, cycloleonurinin☆

K. Oka, H. Morita, H. Itokawa, 1997 .

Conformational Preferene of Cycloleonuripeptides A, B, and C, Three Proline-Rich Cyclic Nonapeptides from Leonurus heterophyllus

H. Morita, H. Itokawa, O. Shirota, 1997 .

Structures of Amides from Asiasarum heterotropoides MAEK. var. mandshuricum MAEK.

H. Itokawa, I. Yasuda, K. Takeya, 1981 .

Cyclic peptides from higher plants. XXVIII. Antitumor activity and hepatic microsomal biotransformation of cyclic pentapeptides, astins, from Aster tataricus.

H. Morita, H. Itokawa, K. Takeya, 1996, Chemical & pharmaceutical bulletin.

Solution forms of antitumor cyclic pentapeptides with 3,4-dichlorinated proline residues, astins A and C, from Aster tataricus.

H. Morita, H. Itokawa, K. Takeya, 1995, Chemical & pharmaceutical bulletin.

Conformational analysis of an antitumour cyclic pentapeptide, astin B, from Aster tataricus)

H. Morita, H. Itokawa, K. Takeya, 1994 .

Lignan bis-glucosides from Galium sinaicum

M. Amer, A. Gamal, H. Itokawa, 1997 .

Dichotomins A - E, new cyclic peptides from stellaria dichotoma L. var. lanceolata Bge.

Hiroshi Morita, H. Morita, H. Itokawa, 1996 .

DICHOTOMIN A, A NEW CYCLIC HEXAPEPTIDE FROM STELLARIA DICHOTOMA L. VAR. LANCEOLATA BGE.

Hiroshi Morita, H. Morita, H. Itokawa, 1995 .

Conformational analysis of a cyclic hexapeptide, segetalin A from Vaccaria segetalis

Motoo Shiro, Hiroshi Morita, H. Morita, 1995 .

A Novel Cyclic Pentapeptide with a β-Hydroxy-γ-chloroproline from Aster tataricus

H. Morita, H. Itokawa, K. Takeya, 1994 .

Alkaloids of tissue cultures of Nandina domestica

H. Itokawa, A. Ikuta, 1988 .

5-Hydroxymethyl-2-furfural, a clinical trials agent for sickle cell anemia, and its mono/di-glucosides from classically processed steamed Rehmanniae Radix

Keduo Qian, K. Lee, S. Morris-Natschke, 2008, Journal of Natural Medicines.

Sesquiterpenoids and iridoid glycosides from Valeriana fauriei.

H. Itokawa, T. Kimura, K. Takeya, 1992, Phytochemistry.

Antitumour Principles from Alpinia galanga

H. Morita, H. Itokawa, K. Takeya, 1987, Planta medica.

Cangorins F-J, five additional oligo-nicotinated sesquiterpene polyesters from Maytenus ilicifolia

H. Morita, H. Itokawa, O. Shirota, 1994 .

Oligo-nicotinated sesquiterpene polyesters from Maytenus ilicifolia

H. Morita, H. Itokawa, O. Shirota, 1993 .

New triterpene dimers from maytenus ilicifolia

N. Tomioka, A. Itai, H. Morita, 1990 .

Antitumor principles from Casearia sylvestris Sw. (Flacourtiaceae), structure elucidation of new clerodane diterpenes by 2-D NMR spectroscopy.

H. Itokawa, K. Takeya, N. Totsuka, 1988, Chemical & pharmaceutical bulletin.

Chemical Studies on the COnstituents of Hyphear Tanakae HOSOKAWA from Different Host Trees

H. Itokawa, K. Takeya, T. Fukunaga, 1988 .

NOVEL QUASSINOIDS FROM EURYCOMA LONGIFOLIA

H. Morita, H. Itokawa, Y. Iitaka, 1993 .

Two triterpenes from the flowers of Camellia japonica

H. Itokawa, Y. Iitaka, A. Ikuta, 1981 .

The Structures of Camelliagenin A, B and C obtained from Camellia Japonica L.

H. Itokawa, T. Murakami, N. Sawada, 1969 .

The structures of camelliagenin A, B, and C obtained from L.

H. Itokawa, T. Murakami, N. Sawada, 1967 .

Flavonol Glycosides from the Leaves of Morus alba L.

H. Morita, H. Itokawa, K. Osawa, 1993 .

Studies on the Constituents of the Japanese Mistletoe, Viscum album L. var. coloratum OHWI Grown on Different Host Trees

H. Itokawa, K. Takeya, T. Fukunaga, 1989 .

Studies on the Constituents of the European Mistletoe, Viscum album L. II

H. Itokawa, K. Takeya, T. Fukunaga, 1987 .

Studies on the Constituents of the European Mistletoe, Viscum album L.(Pharmacognosy,Chemical)

H. Itokawa, K. Takeya, T. Fukunaga, 1987 .

Antihepatotoxic actions of gingerols and diarylheptanoids.

Y. Kiso, H. Itokawa, F. Kiuchi, 1985, Journal of ethnopharmacology.

New Cephalotaxus Alkaloids from Cephalotaxus harringtonia var. drupacea

H. Itokawa, I. Yasuda, K. Takeya, 1996 .

Cytotoxic Principles from Majorana syriaca

H. Itokawa, K. Takeya, C. Hirobe, 1998 .

C18 and C19 Quassinoids from Eurycoma longifolia

H. Morita, H. Itokawa, K. Takeya, 1993 .

Isoflavonoids and the other constituents in callus tissues of Pueraria lobata.

H. Itokawa, K. Takeya, 1982 .

生薬を汚染する有害糸状菌について(第1報)市販生薬類における糸状菌分布と有害糸状菌におけるマイコトキシン生産性

H. Itokawa, Y. Horie, M. Yamazaki, 1980 .

The triterpenes from Stauntonia hexaphylla callus tissues and their biosynthetic significance

H. Itokawa, A. Ikuta, 1989 .

Triterpenoids of Akebia quinata callus tissue

H. Itokawa, A. Ikuta, 1986 .

30-Noroleanane saponins from callus tissues of Akebia quinata

H. Itokawa, A. Ikuta, 1989 .

A triterpene from Akebia quinata callus tissue

H. Itokawa, A. Ikuta, 1988 .

[The study of the constituents of Clematis and Akebia spp. II. On the saponins isolated from the stem of Akebia quinata Decne. (1) (author's transl)].

H. Itokawa, M. Fujita, Y. Kumekawa, 1974, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Isomerization of antitumour bicyclic hexapeptide, RA-VII from Rubia Cordifolia. Part 4. Conformation–antitumour activity relationship

H. Morita, H. Itokawa, Y. Iitaka, 1992 .

New antitumor bicyclic hexapeptides, RA-VI and -VIII from rubia cordifolia ; Conformation-activity relationship II

N. Tomioka, A. Itai, H. Morita, 1991 .

Dehydrozingerone, chalcone, and isoeugenol analogues as in vitro anticancer agents.

K. Lee, H. Itokawa, K. Bastow, 2006, Journal of natural products.

Anti-HIV and cytotoxic activities of Ru(II)/Ru(III) polypyridyl complexes containing 2,6-(2'-benzimidazolyl)-pyridine/chalcone as co-ligand.

K. Lee, N. Kilgore, H. Itokawa, 2001, Bioorganic & medicinal chemistry.

Structural and conformational studies of [Ile7] and [Leu7]surfactins from Bacillus subtilis natto.

K. Oka, H. Morita, H. Itokawa, 1994, Chemical & pharmaceutical bulletin.

Structures and cytotoxic activity relationship of casearins, new clerodane diterpenes from Casearia sylvestris Sw.

E. Schenkel, H. Morita, H. Itokawa, 1991, Chemical & pharmaceutical bulletin.

New antitumor principles, casearins A-F, for Casearia sylvestris Sw. (Flacourtiaceae).

E. Schenkel, H. Morita, H. Itokawa, 1990, Chemical & pharmaceutical bulletin.

Cell growth-inhibitory effects of derivatives of antitumor cyclic hexapeptide RA-V obtained from Rubiae radix (V).

H. Yamamoto, H. Itokawa, K. Takeya, 1984, Gan.

QSAR evaluation of the Ch'an Su and related bufadienolides against the colchicine-resistant primary liver carcinoma cell line PLC/PRF/5(1).

H. Morita, Kyoko Saito, T. Nogawa, 2002, Journal of medicinal chemistry.

A new immunosuppressive cyclic nonapeptide, cyclolinopeptide B from Linum usitatissimum

Teruki Matsumoto, Hiroshi Morita, K. Oka, 1997 .

CONFORMATIONAL PREFERENCE OF TWO TOAD POISON BUFADIENOLIDES, BUFARENOGIN AND PSI -BUFARENOGIN

H. Morita, H. Itokawa, Y. Kamano, 1998 .

A quantitative structure-activity relationship for antitumor activity of long-chain phenols from Ginkgo biloba L.

H. Morita, M. Inamatsu, H. Itokawa, 1989, Chemical & pharmaceutical bulletin.

[Studies on the components of Magnolia obovata Thunb. II. On the components of the methanol extract of the bark].

H. Itokawa, Y. Sashida, M. Fujita, 1973, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Studies on Rubia akane(RA) derivatives. Part 8. Design, syntheses and antitumour activity of cyclic hexapeptide RA analogues possessing an alkyl substituent on the Tyr-3 aromatic ring

T. Yamagishi, H. Itokawa, K. Takeya, 1996 .

Conformational analysis of a cyclic heptapeptide, pseudostellarin D by molecular dynamics and Monte Carlo simulations.

H. Morita, H. Itokawa, K. Takeya, 1996, Chemical & pharmaceutical bulletin.

Cyclic peptides from higher plants, Part 15. Pseudostellarin H, a new cyclic octapeptide from Pseudostellaria heterophylla.

H. Morita, H. Itokawa, K. Takeya, 1995, Journal of natural products.

CONFORMATIONAL ANALYSIS OF A TYROSINASE INHIBITORY CYCLIC PENTAPEPTIDE, PSEUDOSTELLARIN A,FROM PSEUDOSTELLARIA HETEROPHYLLA

H. Morita, H. Itokawa, K. Takeya, 1994 .

[The indole derivatives isolated from the oil cakes of camellia seeds. On the relation to the components of the fungus infecting the oil cakes (author's transl)].

H. Itokawa, M. Yamazaki, Y. Akita, 1973, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

IN-BEAM ELECTRON IMPACT, CHEMICAL IONIZATION AND NEGATIVE ION CHEMICAL IONIZATION OF FLAVONOID GLYCOSIDES

H. Itokawa, Y. Shida, A. Ikuta, 1982 .

Studies on the Tissue Culture of Humulus lupulus L. and the Chemical Constituents

H. Itokawa, K. Takeya, A. Ikuta, 1980 .

[Studies on the components of Magnolia obovata Thunb. 3. Occurrence of magnolol and hõnokiol in M. obovata and other allied plants].

H. Itokawa, Y. Sashida, M. Fujita, 1973, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Combination of ion-pair and column switching in high-performance liquid chromatography of tropane alkaloids

H. Itokawa, T. Oshima, Takuo Mizutani, 1991 .

Berberine and other protoberberine alkaloids in callus tissue of Thalictrum minus

H. Itokawa, A. Ikuta, 1982 .

Lathyrane diterpenes from Euphorbia lathyris

H. Itokawa, K. Takeya, Kinzo Watanabe, 1990 .

Separation and characterization of active flavonolignans of Silybum marianum by liquid chromatography connected with hybrid ion-trap and time-of-flight mass spectrometry (LC-MS/IT-TOF).

K. Lee, H. Itokawa, M. Shibano, 2007, Journal of natural products.

Ester-type cephalotaxus alkaloids from Cephalotaxus harringtonia var. drupacea.

H. Itokawa, I. Yasuda, K. Takeya, 1997, Phytochemistry.

Determination of berberine and palmatine in Phellodendri Cortex using ion-pair supercritical fluid chromatography on-line coupled with ion-pair supercritical fluid extraction by on-column trapping

H. Itokawa, Yuji Ito, K. Sagara, 1997 .

Determination of magnolol and honokiol in Magnoliae Cortex using supercritical fluid chromatography on-line coupled with supercritical fluid extraction by on-column trapping

H. Itokawa, Yuji Ito, K. Sagara, 1997 .

Antitumor agents. 261. 20(S)-protopanaxadiol and 20(s)-protopanaxatriol as antiangiogenic agents and total assignment of (1)H NMR spectra.

R. Kasai, K. Lee, S. Morris-Natschke, 2008, Journal of natural products.

Diarylheptanoids from the Rhizome of Alpinia officinarum HANCE

H. Morita, H. Itokawa, R. Aiyama, 1985 .

A pungent diarylheptanoid from Alpinia oxyphylla

H. Itokawa, R. Aiyama, A. Ikuta, 1981 .

Degradation of an antitumour bicyclic hexapeptide RA-VII into cycloisodityrosines

H. Itokawa, K. Yamaguchi, Y. Matsumoto, 2000 .

Synthesis of 4-thia-2-azapodophyllotoxin, a new analogue of the antitumour lignan podophyllotoxin

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1995 .

Berberine: Production Through Plant (Thalictrum spp.) Cell Cultures

H. Itokawa, A. Ikuta, 1988 .

Crystal and solution forms of a cyclic heptapeptide, pseudostellarin D1)

Motoo Shiro, Hiroshi Morita, H. Morita, 1995 .

Structures and conformation of antitumour cyclic pentapeptides, astins A, B and C, from Aster tataricus

H. Morita, H. Itokawa, Y. Iitaka, 1995 .

Sesquiterpenoids from Valeriana fauriei

H. Itokawa, Y. Iitaka, K. Takeya, 1995 .

[Chemical studies on ginseng. I. (Studies on saponin-bearing drugs. IV.). Isolation of saponin and sapogenin from radix ginseng].

H. Itokawa, S. Shibata, M. Fujita, 1962, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Structures and Spasmolytic Activities of Derivatives from Sesquiterpenes of Alpinia speciosa and Alpinia japonica

H. Nakanishi, H. Morita, H. Itokawa, 1996 .

A NEW SKELETON SESQUITERPENOID FROM ALPINIA JAPONICA (THUNB.) MIQ.

H. Morita, H. Itokawa, Y. Iitaka, 1984 .

Cytotoxic chemical constituents from Egyptian medicinal plant, Ambrosia maritima L

H. Itokawa, K. Takeya, H. Nagaya, 1994 .

Cytotoxic activity of Typhonium flagelliforme (Araceae)

H. Itokawa, K. Takeya, K. Chan, 2001, Phytotherapy research : PTR.

Isolation and antitumor activity of cyclic hexapeptides isolated from Rubiae radix.

H. Itokawa, K. Takeya, K. Mihara, 1984, Chemical & pharmaceutical bulletin.

Studies on the antitumor cyclic hexapeptides obtained from Rubiae radix.

H. Itokawa, Y. Iitaka, K. Takeya, 1983, Chemical & pharmaceutical bulletin.

Pregnane glycosides from an antitumour fraction of Periploca sepium

H. Itokawa, K. Takeya, Junping Xu, 1988 .

Revised Structures of Cangorosins, Triterpene Dimers from Maytenus ilicifolia

H. Morita, H. Itokawa, O. Shirota, 1997 .

Cytotoxic aromatic triterpenes from Maytenus ilicifolia and Maytenus chuchuhuasca.

H. Morita, H. Itokawa, O. Shirota, 1994, Journal of natural products.

Conformational recognition of RA-XII by 80S ribosomes: a differential line broadening study in 1H NMR spectroscopy.

T. Suga, H. Morita, H. Itokawa, 1993, Chemical & pharmaceutical bulletin.

Structures and conformations of metabolites of antitumor cyclic hexapeptides, RA-VII and RA-X.

H. Morita, H. Itokawa, K. Takeya, 1992, Chemical & pharmaceutical bulletin.

Agarofuran-, eudesmane- and eremophilane-type sesquiterpenoids from Alpinia japonica (THUNB.) MIQ.

H. Morita, H. Itokawa, Y. Iitaka, 1985 .

Alkaloids from Pteridophyllum racemosum

H. Itokawa, A. Ikuta, 1976 .

Cyclic peptides from higher plants. Part 21. Thionation of the antitumour cyclic pentapeptides, astins A, B and C, from Aster tataricus

H. Morita, H. Itokawa, K. Takeya, 1995 .

Comparison of the Commercial Turmeric and Its Cultivated Plant by Their Constituents

S. Uehara, H. Itokawa, I. Yasuda, 1992 .

Novel sesquiterpenes from Alpinia intermedia GAGNEP.

H. Morita, H. Itokawa, Y. Iitaka, 1987 .

Syntheses of Antitumor Morphinane Alkaloids, Sinococuline and 6-epi-, 7-epi-, and 6-epi-7-epi-Sinococuline, from Sinomenine

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1995 .

Syntheses of Antitumor Morphinane Alkaloids, Sinococuline (IX) and 6‐ epi‐ (XI), 7‐epi‐ (X), and 6‐epi‐7‐epi‐Sinococuline (XII), from Sinomenine (I).

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1995 .

[Studies on the constituents of the flower of Camellia japonica (2)].

H. Itokawa, A. Ikuta, H. Nakajima, 1984, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Studies on chemical constituents of antitumor fraction from Periploca sepium. IV. Structures of new pregnane glycosides, periplocosides D, E, L, and M.

H. Itokawa, K. Takeya, J. Xu, 1988, Chemical and pharmaceutical bulletin.

Studies on chemical constituents of antitumor fraction from Periploca sepium. V. Structures of new pregnane glycosides, periplocosides J, K, F and O.

H. Itokawa, K. Takeya, J. Xu, 1988, Chemical & pharmaceutical bulletin.

Studies on chemical constituents of antitumor fraction from Periploca sepium. II. Structures of new pregnane glycosides, periplocosides A, B and C.

H. Itokawa, J. Shoji, K. Takeya, 1988, Chemical & pharmaceutical bulletin.

Studies on chemical constituents of antitumor fraction from Periploca sepium BGE. I.

H. Itokawa, K. Takeya, J. Xu, 1987, Chemical & pharmaceutical bulletin.

Pregnanes and cardenolides from Periploca sepium.

H. Itokawa, K. Takeya, Junping Xu, 1990 .

Conformation of cyclic heptapeptides: solid and solution state conformation of yunnanin A

H. Morita, H. Itokawa, M. Shiro, 1997 .

The structure of panaxadiol a sapogenin of ginseng

O. Tanaka, H. Itokawa, S. Shibata, 1962 .

Nine New Isoxuxuarine‐Type Triterpene Dimers from Maytenus chuchuhuasca

M. Satake, H. Morita, H. Itokawa, 2004, Chemistry & biodiversity.

Two cangorosin A type triterpene dimers from Maytenus chuchuhuasca.

M. Satake, H. Morita, H. Itokawa, 2004, Chemical & pharmaceutical bulletin.

Nine Triterpene Dimers from Maytenus chuchuhuasca

M. Satake, H. Morita, H. Itokawa, 2004 .

New Geometric and Stereoisomeric Triterpene Dimers from Maytenus chuchuhuasca

H. Morita, H. Itokawa, O. Shirota, 1998 .

Five New Triterpene Dimers from Maytenus chuchuhuasca

H. Morita, H. Itokawa, O. Shirota, 1997 .

Structures of xuxuarines, stereoisomeric triterpene dimers from Maytenus chuchuhuasca

H. Morita, H. Itokawa, O. Shirota, 1995 .

Cancer Preventive Agents. 7. Antitumor-Promoting Effects of Seven Active Flavonolignans from Milk Thistle (Silybum marianum.) on Epstein-Barr Virus Activation

Harukuni Tokuda, H. Tokuda, K. Lee, 2007 .

Silver nitrate impregnation of preparative silica gel columns for liquid chromatography

S. Hara, H. Itokawa, S. Mihashi, 1983 .

Death from snake-bite in Anuradhapura District.

H. Itokawa, M. Toriba, Y. Sawai, 1983, Ceylon Medical Journal.

Cytotoxic Triterpene from Aster tataricus

H. Morita, H. Itokawa, Y. Iitaka, 1997 .

Structure of a new peptide, astin J, from Aster tataricus.

H. Morita, H. Itokawa, K. Takeya, 1995, Chemical & pharmaceutical bulletin.

Segetalins B, C and D, three new cyclic peptides from Vaccaria segetalis

H. Morita, H. Itokawa, K. Takeya, 1995 .

Cyclic peptides from higher plants. 34. Segetalins G and H, structures and estrogen-like activity of cyclic pentapeptides from Vaccaria segetalis.

H. Morita, H. Itokawa, K. Takeya, 1997, Journal of natural products.

Triterpenoid saponin from Vaccaria segetalis.

H. Morita, H. Itokawa, O. Shirota, 1998, Phytochemistry.

Vaccaroid A, a new triterpenoid saponin with contractility of rat uterine from Vaccaria segetalis

H. Morita, H. Itokawa, O. Shirota, 1997 .

Conformational preference for segetalins G and H, cyclic peptides with estrogen-like activity from seeds of Vaccaria segetalis.

H. Morita, H. Itokawa, H Morita, 1997, Bioorganic & medicinal chemistry.

Vaccaroid A, a New Triterpenoid Saponin with Contractility of Rat Uterine from Vaccaria segetalis.

H. Morita, H. Itokawa, O. Shirota, 1997 .

Satisfactory separation and MS-MS spectrometry of six surfactins isolated from Bacillus subtilis natto.

K. Oka, H. Morita, H. Itokawa, 1993, Chemical & pharmaceutical bulletin.

Studies on RA derivatives. V. Synthesis and antitumor activity of Ala2-modified RA-VII derivatives.

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1993, Chemical & pharmaceutical bulletin.

Studies on antitumor cyclic hexapeptides RA obtained from Rubiae Radix, Rubiaceae. III. On derivatives of RA-V and their in vivo activities.

H. Itokawa, K. Takeya, S. Mihashi, 1984, Chemical & pharmaceutical bulletin.

New antitumour bicyclic hexapeptides, RA-IX and -X from Rubia cordifolia. Part 3. Conformation–antitumour activity relationship

H. Morita, H. Itokawa, K. Takeya, 1992 .

Novel water-soluble analogues retaining potent antitumor activity of RA-VII, a cyclic hexapeptide from Rubia plants

T. Yamagishi, S. Nakaike, T. Ichihara, 1997 .

Regioselective Synthesis of 14-Membered Biaryl Ethers : Total Synthesis of RA-VII and Deoxybouvardin

K. Komatsu, H. Itokawa, H. Hara, 1995 .

New Antitumour Bicyclic Hexapeptides, RA-IX and -X from Rubia cordifolia. Part 3. Conformation-Antitumour Activity Relationship.

H. Morita, H. Itokawa, K. Takeya, 1992 .

Structures and conformations of antitumor cyclic hexapeptides, RA series, from Rubia cordifolia

T. Suga, H. Morita, H. Itokawa, 1993 .

RAI-III and VI, conformational isomers of antitumor cyclic hexapeptides, RA-III and VI from Rubia cordifolia

N. Tomioka, A. Itai, H. Morita, 1991 .

Conformational analysis of [n-demethyl-Tyr(OCH3)-3]RA-VII, conformationally restricted model approach.

H. Morita, H. Itokawa, K. Takeya, 1991, Chemical & pharmaceutical bulletin.

Studies on antitumour cyclic hexapeptides RA obtained from Rubiae radix, Rubiaceae (IV): Quantitative determination of RA-VII and RA-V in commercial Rubiae radix and collected plants.

H. Yamamoto, H. Itokawa, K. Takeya, 1984, Planta medica.

Preparation and antitumor activity of [N-alkyl-Ala2]RA-VII, antitumor cyclic hexapeptide

H. Itokawa, Y. Hitotsuyanagi, Jin Suzuki, 1994 .

3D QSAR analysis of taxoids from Taxus cuspidata var. nana by comparative molecular field approach

H. Morita, H. Itokawa, K. Takeya, 1997 .

Taxus, the genus Taxus.

K. Lee, H. Itokawa, 2003 .

Studies on Rubia akane (RA) Derivatives. Part 11. Novel Water-Soluble Analogues (I) Retaining Potent Antitumor Activity of RA-VII, a Cyclic Hexapeptide from Rubia Plants

H. Itokawa, 1998 .

Preparation and cytotoxicity of cyclic hexapeptides, RA derivatives.

A. Nakamura, H. Morita, H. Itokawa, 1993, Chemical & pharmaceutical bulletin.

Synthesis of [L-Ala-1]RA-VII, [D-Ala-2]RA-VII, and [D-Ala-4]RA-VII by epimerization of RA-VII, an antitumor bicyclic hexapeptide from Rubia plants, through oxazoles.

S. Sasaki, H. Itokawa, K. Yamaguchi, 2003, Journal of the American Chemical Society.

Synthesis of [Gly-1]RA-VII, [Gly-2]RA-VII, and [Gly-4]RA-VII. Glycine-containing analogues of RA-VII, an antitumor bicyclic hexapeptide from Rubia plants.

H. Ishikawa, H. Itokawa, K. Yamaguchi, 2004, The Journal of organic chemistry.

Cyclic Peptides from Higher Plants. Part 8. Three Novel Cyclic Pentapeptides, Astins F, G and H from Aster tataricus

H. Morita, H. Itokawa, K. Takeya, 1994 .

Two Novel Monochlorinated Cyclic Pentapeptides, Astins D and E from Aster tataricus.

H. Morita, H. Itokawa, O. Shirota, 1993 .

Antibacterial trichorabdal diterpenes from Rabdosia trichocarpa.

H. Morita, H. Itokawa, K. Takeya, 1994, Phytochemistry.

[The study on the constituents of Clematis and Akebia spp. I. Distribution of triterpenes and other components (author's transl)].

H. Itokawa, M. Fujita, Y. Kumekawa, 1974, Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan.

Cytotoxic Coumarins from Roots of Angelica gigas NAKAI

H. Morita, H. Itokawa, K. Takeya, 1994 .

Flavonol glycosides from the flowers of Cucurbita pepo

S. Ikegami, H. Itokawa, H. Inatomi, 1981 .

THREE NOVEL NAPHTHOHYDROQUINONE DIMERS FROM RUBIA ONCOTRICHA

H. Itokawa, Y. Iitaka, K. Takeya, 1990 .

Configuraitonal and Conformational Analysis of Macrocarpals H, I, and J from Eucalyptus globulus

H. Morita, H. Itokawa, K. Takeya, 1997 .

Stereochemistry in oxidation of allylic alcohols by cell-free system of callus induced from Cannabis sativa L.

H. Itokawa, K. Takeya, 1976, Chemical & pharmaceutical bulletin.

Structure of Gilvanol, a New Triterpene isolated from Quercus gilva BLUME

H. Itokawa, Y. Iitaka, Y. Kamano, 1978 .

Taxuspinananes A and B, new taxoids from Taxus cuspidata var. nana.

Y. Yamamura, H. Morita, H. Itokawa, 1997, Journal of natural products.

Isolation and 13C-NMR Studies on Three New Furanoditerpenyl Glucosides from Jateorrhiza columba

H. Itokawa, K. Takeya, Y. Ichihara, 1987, Planta medica.

Cyclic peptides from higher plants. 24.1 yunnanin C, a novel cyclic heptapeptide from Stellaria yunnanensis.

H. Morita, H. Itokawa, K. Takeya, 1996, Journal of natural products.

New Quassinoids from the Roots of Eurycoma longifolia

H. Morita, O. Tanaka, H. Itokawa, 1990 .

A New Squalene-type Triterpene from the Woods of Eurycoma longifolia

H. Morita, H. Itokawa, Y. Iitaka, 1991 .

A cytotoxic substance from Sangre de Grado.

H. Morita, M. Inamatsu, H. Itokawa, 1991, Chemical & pharmaceutical bulletin.

Conformational analysis of cyclolinopeptides A and B

Teruki Matsumoto, Hiroshi Morita, H. Morita, 2002 .

STUDIES ON THE CONSTITUENTS OF JAPANESE AND CHINESE CRUDE DRUGS. XI. PANAXADIOL, A SAPOGENIN OF GINSENG ROOTS.

O. Tanaka, H. Itokawa, S. Shibata, 1963, Chemical & pharmaceutical bulletin.

DITERPENES FROM CROTON-SALUTARIS

H. Morita, H. Itokawa, K. Takeya, 1991 .

Four New Taxoids from Taxus cuspidata var. nana

Y. Yamamura, H. Morita, H. Itokawa, 1998, Planta medica.

Sesquiterpenes pyridine alkaloids from Maytenus ebenifolia

H. Morita, H. Itokawa, O. Shirota, 1992 .

An investigation of diterpenes from the leaves of Rabdosia trichocarpa and their antibacterial activity against oral microorganisms.

H. Morita, H. Itokawa, K. Takeya, 1994, Chemical & pharmaceutical bulletin.

Sesquiterpene Pyridine Alkaloids (I) from Maytenus ilicifolia.

H. Morita, H. Itokawa, O. Shirota, 1994 .

Constituents of the rhizomes of two Alpinia species of Malaysia.

H. Morita, H. Itokawa, H. Sirat, 1996, Planta medica.

High performance liquid chromatography in phytochemical analysis of Eurycoma longifolia.

H. Morita, K. Chan, H. Itokawa, 1998, Planta medica.

Quassinoids from Ailanthus vilmoriniana

H. Morita, H. Itokawa, K. Takeya, 1998 .

Conformational analysis of a marine antineoplastic macrolide, bryostatin 10☆

H. Morita, H. Itokawa, D. L. Herald, 1996 .

A new approach to the epimeric analogue of cyclic peptides: epimerisation via oxazoles of RA-VII, an anti-tumour bicyclic hexapeptide from Rubia plants

Yuji Matsumoto, Kentaro Yamaguchi, S. Sasaki, 2001 .

A New Indole Alkaloid Glycoside from the Leaves of Palicourea marcgravii.

H. Morita, H. Itokawa, K. Takeya, 1989, Planta medica.

Cytotoxic Quassinoids and Tirucallane-Type Triterpenes from the Woods of Eurycoma longifolia.

H. Morita, H. Itokawa, K. Takeya, 1992 .

Furanoditerpene glucosides from Fibraurea tinctoria

H. Itokawa, K. Takeya, Reiko Tajima, 1986 .

Phytochemical reportOxoaporphine alkaloids from the callus tissue of Stephania cepharantha

H. Itokawa, M. Akasu, M. Fujita, 1975 .

Four new fluorescent components isolated from the callus tissue of ]stephania cepharantha

H. Itokawa, M. Akasu, M. Fujita, 1974 .

Synthesis of 2-aza-4-ketopodophyllotoxin

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1992 .

Isolation of oppositane- and cycloeudesmane-type sesquiterpenoids from Torilis japonica D.C.

H. Matsumoto, H. Itokawa, S. Mihashi, 1983 .

Constituents of Torilis japonica D.C. I. Isolation and Optical Purity of Germacra-4 (15), 5 (E), 10 (14)-trien-1β-ol

H. Matsumoto, H. Itokawa, S. Mihashi, 1983 .

Cytotoxic limonoids and tetranortriterpenoids from Melia azedarach.

H. Itokawa, K. Takeya, C. Hirobe, 1995, Chemical & pharmaceutical bulletin.

Determination of sennoside A and B in the pharmaceutical preparation Otsuji-to using ion-pair high-performance liquid chromatography with column switching

Tadao Maruta, H. Itokawa, T. Oshima, 1991 .

GAS CHROMATOGRAPHY OF TRITERPENES. I. URSANANE, OLEANANE, AND LUPANE GROUPS.

S. Natori, N. Ikekawa, H. Itokawa, 1965, Chemical and pharmaceutical bulletin.

Simulatneous determination of baicalein, wogonin, oroxylin-A and their glucuronides in scutellariae radix by ion-pair high-performance liquid chromatography

H. Itokawa, Yuji Ito, T. Oshima, 1985 .

Studies on Rubia akane (RA) Derivatives. Part 10. Backbone Transformation of RA‐VII, an Antitumor Cyclic Hexapeptide, Through Thionation. X‐Ray Crystal Structure of (Tyr‐3‐ψ(CH2NH)‐Ala‐4)RA‐ VII.

K. Yamaguchi, H. Itokawa, Y. Matsumoto, 1996 .

3D QSAR Analysis of Taxoids from Taxus cuspidata var. nana by Comparative Molecular Field Approach.

H. Morita, H. Itokawa, K. Takeya, 1998 .

The Formation of Cyclic Peroxide from Guaia-6,9-diene as a Model for Hanalpinol Biosynthesis

N. Tomioka, H. Morita, H. Itokawa, 1988 .

Modification of the Skeleton of Homoharringtonine through Unusual Rearrangements.

H. Itokawa, I. Yasuda, K. Takeya, 1997, Journal of Organic Chemistry.

STUDIES ON THE CONSTITUENTS OF JAPANESE AND CHINESE CRUDE DRUGS. XII. PANAXADIOL, A SAPOGENIN OF GINSENG ROOTS.

M. Nagai, O. Tanaka, H. Itokawa, 1963, Chemical & pharmaceutical bulletin.

Protoberberine Alkaloids from Coptis quinquefolia

H. Itokawa, A. Ikuta, 1989 .

Determination of Self-Association of Irinotecan Hydrochloride (CPT-11) in Aqueous Solution

M. Nakanishi, H. Itokawa, S. Sawada, 1992 .

Identification and Structure-Activity Relationship Studies of Osthol, a Cytotoxic Principle from Cnidium Monnieri.

H. Itokawa, K. Takeya, Y. Hitotsuyanagi, 1996 .