CHEMOTAXONOMY IN MARINE ALGAE: CHEMICAL SEPARATION OF SOME LAURENCIA SPECIES (RHODOPHYTA) FROM THE GULF OF CALIFORNIA 1

Species separation in the genus Laurencia (Rhodomelaceae, Rhodophyta) is complicated by the high degree of morphological variation within the species. Chemical investigations on a worldwide basis of over 15 species indicate that 1 or more of the halogenated natural products synthesized by Laurencia are unique to each species. Our chemical investigations of Laurencia pacifica, as presently understood from the Gulf of California, indicate that more than 1 species had been included under this name. Thin layer chromatographic (TLC) comparisons of the halogenated components of 3 recognizable forms of “L. pacifica” were completed. The results revealed 3 distinct forms, with halogenated products unique to each form. In each form the observed chemical characters had been previously isolated and identified and could now be positively assigned to their algal source. Comparisons were also conducted with L. pacifica Kylin (1941) from the type locality of the species, La Jolla, California, and revealed that it contained another halogenated product different from those isolated from the Gulf species.

[1]  J. Clardy,et al.  X‐RAY DETERMINATION OF CHONDRIOL, A RE‐ASSIGNMENT OF STRUCTURE , 1974 .

[2]  R. M. Wing,et al.  Marine natural products X elatol, a halogenated sesquiterpene alcohol from the red alga . , 1974 .

[3]  J. Fayós,et al.  Oppositol, a brominated sesquiterpene alcohol of a new skeletal class from the red alga, Laurencia subopposita. , 1973, Journal of the American Chemical Society.

[4]  J. Price Advances in the study of benthic marine algae since the time of E. M. Holmes , 1973 .

[5]  J. Chantraine,et al.  Phenols bromes d'une algue rouge, Halopytis incurvus: Acides carboxyliques , 1973 .

[6]  Siuda Jf,et al.  Naturally occurring halogenated organic compounds. , 1973 .

[7]  H. V. D. Velde THE USE OF PHYCOERYTHRIN ABSORPTION SPECTRA IN THE CLASSIFICATION OF RED ALGAE , 1973 .

[8]  W. Fenical,et al.  Marine natural products. IV. Prepacifenol, a halogenated epoxy sesquiterpene and precursor to pacifenol from the red alga, Laurencia filiformis , 1973 .

[9]  W. Fenical,et al.  Marine natural products. Concinndiol, a bromo-diterpene alcohol from the red alga, Laurencia concinna , 1973 .

[10]  J. Darias,et al.  Caespitol, a new halogenated sesquiterpene from , 1973 .

[11]  J. Darias,et al.  Furocaespitane, a new furan from Laurencia caespitosa , 1973 .

[12]  W. Fenical,et al.  Marine natural products III. Johnstonol, an unusual halogenated epoxide from the red alga Laurencia johnstonii , 1972 .

[13]  E. Kurosawa,et al.  Laurefucin and acetyllaurefucin, new bromo compounds from yamada , 1972 .

[14]  W. Fenical,et al.  Marine natural products. I. Pacifenol, a rare sesquiterpene containing bromine and chlorine from the red alga, Laurencia pacifica , 1971 .

[15]  M. Izawa,et al.  Laureatin and isolaureatin, constituents of Laurencia nipponica Yamada , 1970 .

[16]  Minoru Suzuki,et al.  Spirolaurenone, a new sesquiterpenoid containing bromine from Kützing , 1970 .

[17]  T. Masamune,et al.  Laurinterol, debromolaurinterol and isolaurinterol, constituents of Laurencia intermedia Yamada , 1970 .

[18]  B. Turner CHEMOSYSTEMATICS: RECENT DEVELOPMENTS , 1969 .

[19]  Minoru Suzuki,et al.  Isolation of Aplysin, Debromoaplysin, and Aplysinol from Laurencia Okamurai Yamada , 1969 .

[20]  J. Robertson,et al.  Laurencia natural products, part II. Crystal structure and absolute stereochemistry of laurinterol acetate, A bicyclo[3,1,0]hexane derivative , 1969 .

[21]  J. Robertson,et al.  Laurencia natural products. Part I. Crystal structure and absolute stereochemistry of laurencin , 1969 .

[22]  M. Izawa,et al.  Laurenisol, a new sesquiterpenoid containing bromine from yamada , 1969 .

[23]  H. Hirose,et al.  Spectroscopic Studies on Phycoerythrins from Cyanophycen and Rhodophycean Algae with Special Reference to their Phylogenetical Relations , 1969 .

[24]  M. Sommerfeld,et al.  PYROLYSIS‐GAS‐LIQUID CHROMATOGRAPHIC ANALYSIS OF CHLOROPHYCEAN AND RHODOPHYCEAN ALGAE 1 , 1968, Journal of phycology.

[25]  P. Saenger,et al.  The water-soluble pigments of the red alga Lenormandia prolifera , 1968 .

[26]  E. Kurosawa,et al.  Isolaureatin, a constituent from yamada , 1968 .

[27]  T. Masamune,et al.  Laurencin, a constituent of Laurencia glandulifera Kutzing , 1968 .

[28]  J. Craigie,et al.  Bromophenols from Red Algae , 1967, Science.

[29]  Y. Suzuki,et al.  5,6-dibromoprotocatechualdehyde and 2,3-dibromo-4,5-dihydroxybenzyl methyl ether: New dibromophenols from rhodomela larix☆ , 1967 .

[30]  A. Mcinnes,et al.  THE OCCURRENCE OF 2,3-DIBROMOBENZYL ALCOHOL 4,5-DISULFATE, DIPOTASSIUM SALT, IN POLYSIPHONIA LANOSA , 1966 .

[31]  Minoru Suzuki,et al.  Laurinterol and debromolaurinterol, constituents from , 1966 .

[32]  Minoru Suzuki,et al.  Laurencin, a constituent from species , 1965 .

[33]  E. Y. Dawson Marine red algae of Pacific Mexico Part 8. Ceramiales: Dasyaceae, Rhodomelaceae , 1963 .

[34]  恒行 斎藤,et al.  海藻類の臭素化合物(第1報)紅藻モロイトグサより分離せる1プロムフェノールについて , 1955 .