K. Ravikumar

发表

Dorzolamide hydrochloride: an antiglaucoma agent.

B. Sridhar, K. Ravikumar, 2007, Acta crystallographica. Section C, Crystal structure communications.

2,3,3a,4,5,9b-Hexahydro-4-phenylfuro[3,2-c]quinoline

B. Sridhar, K. Ravikumar, M. Mahesh, 2006 .

4-(4-Nitrophenyl)-2,3,3a,4,5,9b-hexahydrofuro[3,2-c]quinoline

B. Sridhar, K. Ravikumar, M. Mahesh, 2005 .

Supramolecular hydrogen-bonded networks in cytosinium nicotinate monohydrate and cytosinium isonicotinate cytosine dihydrate.

B. Sridhar, K. Ravikumar, 2010, Acta crystallographica. Section C, Crystal structure communications.

Preparation, characterization, photoactivity and XPS studies of Ln2ZrTiO7 (Ln = Sm and Nd)

B. Sreedhar, G. Prasad, M. Vithal, 2010 .

Molecular and crystal structures of bis-tetrazolate ammonium salt and bis-tetrazole monohydrate

K. Ravikumar, G. Swamy, K. Ravikumar, 2014, Journal of Structural Chemistry.

Low Temperature Sol-Gel Synthesis of Bulk and Nano-sized NbTi(PO4)3

M. Vithal, R. Velchuri, B. Kumar, 2010 .

Unprecedented folding in linker based flexible tripodal molecule and their conformational analysis

Ranjeet Kumar, A. Tewari, B. Sridhar, 2017 .

Ropinirole hydrochloride, a dopamine agonist.

B. Sridhar, K. Ravikumar, 2006, Acta crystallographica. Section C, Crystal structure communications.

Crystal growth and characterization of dibromo bis(triphenylphosphine oxide) cadmium (II)

K. Ramamurthi, K. Ravikumar, S. Selvanayagam, 2011 .

NLO Activity in some non-conjugated 3D triazine derivatives: a non-centrosymmetric crystal through conformational flexibility

V. Rao, K. Ravikumar, K. Bhanuprakash, 2006 .

First hyperpolarizability of some nonconjugated donor–acceptor 3D molecules: noncentrosymmetric crystal through conformational flexibility

T. Radhakrishnan, S. P. Anthony, V. Rao, 2005 .

Donepezilium oxalate trihydrate, a therapeutic agent for Alzheimer's disease.

B. Sridhar, K. Ravikumar, D. Sathe, 2006, Acta crystallographica. Section C, Crystal structure communications.

Adaptability of aripiprazole towards forming isostructural hydrogen bonding networks in multi-component salts: a rare case of strong O–H⋯O− ↔ weak C–H⋯O mimicry

B. Sridhar, J. Nanubolu, K. Ravikumar, 2013 .

Crystal structure of lansoprazole sulfone

K. Ravikumar, G. Swamy, 2007 .

Occurrence of natural fullerenes in low grade metamorphosed Proterozoic shungite from Karelia, Russia

M. Vairamani, G. Parthasarathy, K. Ravikumar, 1998 .

Pseudoguaianolides from the flowers of Parthenium hysterophorus.

T. Mcmorris, B. Das, K. Ravikumar, 2003, Phytochemistry.

Towards the Design of Tricyclopenta(def,jkl,pqr)triphenylene (′ Sumanene′): A ′Bowl-Shaped′ Hydrocarbon Featuring a Structural Motif Present in C60 (Buckminsterfullerene).

G. Mehta, K. Ravikumar, S. R. Shah, 1993 .

Methyl 4-(4-chlorophenyl)-3,3a,4,4a,5,12c-hexahydro-2-thianaphtho[1′,2′:3,2]furo[5,4-b]pyrrolizine-4a-carboxylate

B. Sridhar, R. Raghunathan, K. Ravikumar, 2010, Acta Crystallographica Section E.

Methyl 2-(2,2,4-trimethyl-6-tosylperhydro-1,3-dioxino[5,4-c]pyridin-5-yl)acetate

B. Sridhar, R. Raghunathan, K. Ravikumar, 2009, Acta crystallographica. Section E, Structure reports online.

3-(4-Chlorophenyl)-7-methyl-4-(4-methylphenyl)-1-oxa-2,7-diazaspiro[4.5]dec-2-en-10-one

D. Velmurugan, D. Gayathri, K. Ravikumar, 2008, Acta crystallographica. Section E, Structure reports online.

2-Bromo-1-(2,4-dichloro-5-fluorophenyl)-3-phenylprop-2-en-1-one

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

An orthorhombic polymorph of palonosetron hydrochloride

B. Sridhar, K. Ravikumar, 2007 .

(3aR,6S,6aR)-6-Benzyl-1-(4-bromophenyl)-5-tosyl-cis-perhydropyrrolo[3,4-b]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

4-(2,4-Dichlorophenyl)-5-(N,N-diethylcarbamoyl)-6-methyl-3,4-dihydropyrimidine-2(1H)-thione

B. Sridhar, K. Ravikumar, Y. S. Sadanandam, 2007 .

Sertraline hydrochloride form II

B. Sridhar, K. Ravikumar, M. N. Bhanu, 2006 .

3-(2-Chloroethyl)-2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-1-ium chloride

B. Sridhar, K. Ravikumar, 2006 .

16-[4-(3-Chloropropoxy)-3-methoxybenzylidene]-4-androstene-3,17-dione

B. Sridhar, K. Ravikumar, R. Bansal, 2006 .

3′‐(2‐Chlorophenyl)‐1′‐methyl‐4′nitrospiro[indan‐2,2′‐pyrrolidine]‐1,3‐dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

A new clerodane diterpene with antifeedant activity from Teucrium tomentosum.

S. S. Rajan, G. Krishnakumari, K. Ravikumar, 2003, Acta crystallographica. Section C, Crystal structure communications.

Folded conformations due to arene interactions in dissymmetric and symmetric butylidene-linker models based on pyrazolo[3,4-d]pyrimidine, purine and 7-deazapurine.

K. Ravikumar, R. Kant, K. Avasthi, 2014, Acta crystallographica. Section C, Structural chemistry.

Conformational control due to arene interactions in dissymmetrical diaryl 2-methylenepropylidene both in solution and solid state

K. Ravikumar, R. Kant, K. Avasthi, 2014, Journal of Structural Chemistry.

Role of arene interactions and substituent effects in conformational (syn/anti) control of 1,2-diarylethanes

P. Maulik, R. Khanna, K. Ravikumar, 2012 .

An alternative to ‘propylene/Leonard linker’ for studying arene interactions in flexible pyrazolo[3,4-d]pyrimidine core based models both at molecular and supramolecular levels

P. Chattopadhyay, P. Maulik, K. Ravikumar, 2011 .

Studies of Inter/intramolecular Weak Interactions with CH … S and S … arene Interaction in Symmetrical and Dissymmetrical Models

A. Tewari, B. Sridhar, K. Ravikumar, 2010 .

Fabrication and characterization of novel Ga-doped WO3 films and n-Ga@WO3/p-Si junction diode for optoelectronic device applications

M. Raja, Mohanraj Kumar, K. Ravikumar, 2022, Inorganic Chemistry Communications.

Multicomponent crystals of erlotinib.

B. Sridhar, A. Singh, K. Ravikumar, 2010, Acta crystallographica. Section C, Crystal structure communications.

Voriconazole, an antifungal drug

B. Sridhar, K. Ravikumar, K. Prasad, 2007 .

Crystal and molecular structure of 2,6-dimethyl-3,5-di[N-methyl]carbamoyl-4-[3,4-methoxy]phenyl-l,4-dihydropyridine hemihydrate and 2,6-dimethyl-3,5-di[N-methyl]carbamoyl-4-[furan]1,4-dihydropyridine

K. Ravikumar, Y. S. Sadanandam, M. Sagar, 1999 .

Crystal structure analysis of 4-R-phenyl-2,6-dimethyl-3,5-N-(dimethylcarbamoyl)-1,4-dihydropyridines [R=2-nitro (1), 4-methoxy (2) and 3,4-dichloro (3)]

K. Ravikumar, Y. S. Sadanandam, M. Sagar, 1998 .

Crystal structure of dafone and bis[dafone]tetrachlorocobaltate(II) dihydrate

K. Ravikumar, N. Lakshmi, 1994 .

Designing a non-centrosymmetric crystal: structure of 4′-cyano-2,6-dimethyl-4-hydroxyazobenzene

J. Sarma, K. Ravikumar, K. Bhanuprakash, 1993 .

Dimorphism in (2Z)-2-benzylidene-N,7-dimethyl-3-oxo-5-phenyl-2,3-dihydro-5H-1,3-thiazolo[3,2-a]pyrimidine-6-carboxamide.

B. Sridhar, K. Ravikumar, Y. S. Sadanandam, 2006, Acta crystallographica. Section C, Crystal structure communications.

Dimethyl 7‐(N,N‐dimethylamino)‐3‐(2‐methoxybenzoyl)indolizine‐1,2‐dicarboxylate

K. Ravikumar, V. Parthasarathi, R. Hema, 2006 .

Methyl [8‐(3,5‐dimethylpyrazol‐1‐ylmethyl)‐4‐methyl‐2‐oxo‐2H‐chromen‐7‐yloxy]acetate 0.19‐hydrate

S. Thamotharan, K. Ravikumar, V. Parthasarathi, 2004 .

Dimethyl 1-(7-acetoxy-4-methyl-2-oxo-2H-chromen-8-ylmethyl)-1H-pyrazole-3,4-dicarboxylate

S. Thamotharan, K. Ravikumar, V. Parthasarathi, 2004 .

N-(4-Acetylphenyl)-N′-[(4-sydnon-3-yl)phenyl]urea dimethylformamide solvate

S. Thamotharan, K. Ravikumar, V. Parthasarathi, 2004 .

Dimethyl 3‐benzoyl‐7‐(N,N‐dimethylamino)indolizine‐1,2‐dicarboxylate

K. Ravikumar, V. Parthasarathi, R. Hema, 2004 .

N4-tetradentate dicarboxyamidate/dipyridyl palladium complexes as robust catalysts for the Heck reaction of deactivated aryl chlorides.

B. Sridhar, M. Kantam, K. Ravikumar, 2009, Chemistry.

Risperidone N-oxide hydrogen peroxide methanol solvate

B. Sridhar, K. Ravikumar, S. Manjunatha, 2005 .

Conformational and crystal energetics of a polymorphic cyclized product of Napafenac: The Z′ and crystal stability correlation

B. Sreedhar, B. Sridhar, J. Nanubolu, 2014 .

Enantioselective nitroaldol (Henry) reaction using copper(II) complexes of (-)-sparteine.

B. Sridhar, M. Kantam, K. Ravikumar, 2006, Chemical communications.

Two quinazolinones: a ring conformational study.

B. Sridhar, K. Ravikumar, G. Swamy, 2008, Acta crystallographica. Section C, Crystal structure communications.

Crystal structure of tris (glycine) calcium(II) dichloride

K. Ravikumar, S. Rajan, 1986 .

Crystal structure of diaqua nitrato glycine calcium(II) nitrate

K. Ravikumar, S. Natarajan, S. Rajan, 1984 .

Conformation of (−)/(l)-1,3-Bis(4,6-dimethyl-1H-nicotinonitril-1-yl)1,3-dithioxypropane Stabilized via Intra/Intermolecular Weak Interactions

A. Tewari, B. Sridhar, K. Ravikumar, 2011 .

Studies on radical cyclization of 2,3-epoxy alcohols containing a β-(alkoxy)acrylate moiety using Cp2TiCl

T. Chakraborty, K. Ravikumar, R. Samanta, 2007 .

2-[(2-Chloro-5-ethyl-3-pyridinyl)(hydroxy)methyl]acrylonitrile

V. Rao, K. Ravikumar, G. Swamy, 2005 .

Synthesis and structural characterization of a calcium coordination polymer based on a μ3-bridging tetradentate binding mode of glycine#

K. Ravikumar, J. Suresh, R.V. Krishnakumar, 2012, Journal of Chemical Sciences.

Supramolecular hydrogen-bonded networks in adeninediium hemioxalate chloride and adeninium semioxalate hemi(oxalic acid) monohydrate.

B. Sridhar, B. Varghese, K. Ravikumar, 2009, Acta crystallographica. Section C, Crystal structure communications.

Resonance-assisted amide protonation in dutasteride hydrochloride salt

B. Sridhar, J. Nanubolu, K. Ravikumar, 2012 .

Tautomerism of bis(2,4-benzyloxy)-6-(5H)-one-1,3,5-triazine: A combined crystallographic and quantum-chemical investigation

B. Sridhar, K. Ravikumar, K. Bhanuprakash, 2006 .

Three structures of dispirooxindole derivatives generated in situ through a three-component one-pot strategy with complete regio- and stereoselectivity.

B. Sridhar, J. Nanubolu, B. Reddy, 2015, Acta crystallographica. Section C, Structural chemistry.

Highly efficient, mild and chemo- and stereoselective synthesis of enaminones and enamino esters using silica supported perchloric acid under solvent-free conditions

Y. K. Rao, B. Sridhar, B. Das, 2006 .

2-[(Ferrocen-1-yl)(hydroxy)methyl]prop-2-enenitrile

R. Raghunathan, K. Ravikumar, S. Selvanayagam, 2013, Acta crystallographica. Section E, Structure reports online.

Regioselective cyclization of unsymmetrical dicyanoanilines to novel 2,3-bifunctionalised indole regioisomers and their use in the synthesis of 4,5-dihydro[1,3]oxazino[5,4-b]indole-6-carbonitriles

S. Ravikanth, K. Ravikumar, G. V. Reddy, 2005 .

Synthesis and structural characterization of a triply bridged copper(II)–zinc(II) Schiff base complex with N,O coordination

D. Velmurugan, L. Govindasamy, K. Ravikumar, 1998 .

Structure of a Coordination Polymer Reminiscent of the Pleated Sheets Observed in Polypeptides: Diaqua(2,2'-bipyridine-3,3'-dicarboxylato)copper(II)

K. Ravikumar, G. Swamy, N. Lakshmi, 1995 .

Synthesis and crystal structure of bis [2-(4-methylphenyl)-1-phenethyl-4(1H)-quinazolinone] dichlorocopper (II)

K. Ramakrishna, K. Ravikumar, G. Swamy, 2013 .

Counter ion effect in Au/Ag-catalyzed chemoselective 6-endo-dig N- and O-cyclizations of enyne-urea system: diversity-oriented synthesis of annulated indoles.

D. Koley, B. Kundu, K. Ravikumar, 2013, The Journal of organic chemistry.

Regioselective free radical cyclization: a general method for the synthesis of the spiro[4.4]nonane system of fredericamycin A

Ashutosh Kumar Singh, K. Reddy, K. Ravikumar, 1993 .

Cytotoxic diterpenoid quinonemethides from the roots of Pygmacopremna herbacea.

T. Rao, B. Sridhar, S. Ramakrishna, 2011, Bioorganic & medicinal chemistry letters.

Synthesis and crystal structure of two derivatives of benzodiazepines

B. Sridhar, K. Ravikumar, V. Reddy, 2008 .

Crystal and molecular structures of 4-aryl-1,4-dihydropyrimidines: Novel calcium channel antagonists

D. Velmurugan, K. Ravikumar, K. C. Chandra Mohan, 2003 .

Understanding the amino ↔ imino tautomeric preference in (imidazole)imidazolidine-N-aryl(alkyl) systems: a case study of moxonidine drug and insights from the Cambridge structural database (CSD)

B. Sridhar, J. Nanubolu, K. Ravikumar, 2014 .

Moxifloxacinium chloride-water-methanol (2/1/1), a novel antibacterial agent.

B. Sridhar, K. Ravikumar, 2006, Acta crystallographica. Section C, Crystal structure communications.

Methyl 1′-(2-hydroxy-1,3-dioxo-2,3-dihydro-1H-indan-2-yl)-2-oxo-5′,6′,7′,7a′-tetrahydrospiro[1H-indole-3,3′(2H,2′H)-1′H-pyrrolizine]-1′-carboxylate

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

Methyl 11,2,3,3a‐5a‐hydroxy‐1‐methyl‐10‐oxo‐4‐phenyl 10H‐indeno[1,2‐b]furo[3,4‐b]pyrrole‐3a‐carboxylate

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

Molecular interactions in substituted 2,2′-bipyridines: crystal structures of 2,2′-bipyridine-3,3′-dicarboxylic acid monohydrate and (2,2′-bipyridine-3,3′-dicarboxylic acid)dichlorocopper(II) dihydrate

K. Ravikumar, G. Swamy, N. Lakshmi, 1997 .

Regioselective addition of Grignard reagents to 2,6-dicyanoanilines and cyclization to new quinazoline derivatives under thermal/microwave irradiation conditions

B. Sridhar, S. Ravikanth, K. Ravikumar, 2006 .

1-Benzoylacenaphthylene-1-spiro-3′-pyrrolizidine-2′-spiro-3′′-1H-indole-2,2′′(1H,3′′H)-dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

1-(2-Chlorophenyl)-1H-indan-2-spiro-2′-pyrrolizidine-3′-spiro-3′′-1H-indole-1,3,2′′(2H,3′′H)-trione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

Crystal structure of 2-mercaptobenzimidazole and bis[2-mercaptobenzimidazole]dichlorocobalt(II)

K. C. Mohan, K. Ravikumar, G. Swamy, 1995 .

Crystal structure of bis(N-2-phenyl-ethyl salicylideneiminato)nickel(II)

K. Ravikumar, S. Rajan, 1986 .

Baylis–Hillman adducts between pyridine carboxaldehyde derivatives and cyclic enones

V. Rao, K. Ravikumar, G. Swamy, 2006 .

Imino Diels-Alder adducts. XII. Two pyrano[3,2-c]quinolines.

B. Sridhar, K. Ravikumar, M. Mahesh, 2005, Acta crystallographica. Section C, Crystal structure communications.

A diastereoisomer of furo[3,2- c ]quinolineImine DielsAlder adducts. Part IV.

Krishnan Ravikumar, Balasubramanian Sridhar, M. Mahesh, 2004 .

Synthesis of New Aminonicotinate Derivatives from Acetylated Baylis—Hillman Adducts and Enamino Esters via a Consecutive [3 + 3]-Annulation Protocol.

V. Rao, K. Ravikumar, G. Swamy, 2010 .

Crystal Structure of 2-(4-Chlorophenyl)-1-phenethyl-2,3-dihydro-4(1H)-quinazolinone

K. Ravikumar, G. Swamy, 2006 .

2‐(4‐Hydroxy‐3‐methoxyphenyl)‐1‐phenethyl‐1,2‐dihydroquinazolin‐4(3H)‐one

K. Ravikumar, G. Swamy, 2005 .

Justicia lignans V. Three new β-apolignans from Justicia neesii Ramamoorthy

K. Ravikumar, G. Subbaraju, D. Rajasekhar, 1998 .

Reaction of methylphthalimidoketene with benzylidene- and cinnamylideneanilines: structure and configuration of the products

G. Sanjayan, K. Ravikumar, A. K. Mukerjee, 1995 .

4-[Bis(2-methyl-1H-indol-3-yl)methyl]-1-(4-methoxyphenyl)-3-phenylazetidin-2-one

D. Velmurugan, B. Sridhar, K. Ravikumar, 2005 .

Imino-Diels-Alder Adducts. Part XIII. Polymorphism in Pyrano [3,2-c] Quinolines

B. Sridhar, K. Ravikumar, M. Mahesh, 2008 .

Designing a new cocrystal of olanzapine drug and observation of concomitant polymorphism in a ternary cocrystal system

J. Nanubolu, K. Ravikumar, 2017 .

Ethyl 2,2′′-dioxo-2′,3′,5′,6′,7′,7a′-hexahydroacenaphthene-1-spiro-3′-1′H-pyrrolizine-2′spiro-1′′-acenaphthene-1-carboxylate

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

Granisetron, an antiemetic drug, and its cobalt complex.

B. Sridhar, K. Ravikumar, 2010, Acta crystallographica. Section C, Crystal structure communications.

r-2,c-6-Bis(4-fluorophenyl)-t-3,t-5-dimethylpiperidin-4-one

D. Gayathri, D. Velmurugan, G. Aridoss, 2008, Acta crystallographica. Section E, Structure reports online.

r‐2,c‐6‐Bis(2‐chlorophenyl)‐t‐3,t‐5‐dimethyl‐1‐nitrosopiperidin‐4‐one oxime

B. Sridhar, K. Ravikumar, V. Parthasarathi, 2005 .

X-ray crystallographic and theoretical studies of substituted phenyl 3,5-di[N-methyl] carbamoyl-1,4-dihydropyridines: Targets for Ca2+ antagonist

E. Jemmis, S. Mehdi, K. Ravikumar, 1999 .

4′-Amino-2,2′′-dioxo-2,2′′,3,3′′-tetrahydro-1H-indole-3-spiro-1′-cyclopent-3′-ene-2′-spiro-3′′-1H-indole-3′,5′,5′-tricarbonitrile dihydrate

D. Velmurugan, D. Gayathri, G. Shanthi, 2008, Acta crystallographica. Section E, Structure reports online.

3'-Nitro-4'-phenylspiro[1 H -indole-3,2'-pyrrolidin]-2-one

Devadasan Velmurugan, Mahalingam Poornachandran, Krishnan Ravikumar, 2006 .

3,3-Bis(1H-indol-3-yl)indolin-2-one

D. Velmurugan, K. Ravikumar, S. Selvanayagam, 2005 .

Regioselective Cyclization of Unsymmetrical Dicyanoanilines to Novel 2,3‐Bifunctionalized Indole Regioisomers and Their Use in the Synthesis of 4,5‐Dihydro[1,3]oxazino[5,4‐b]indole‐6‐carbonitriles.

B. Sridhar, S. Ravikanth, K. Ravikumar, 2005 .

Crystal structure of indium(III) Schiff base complex

K. Ravikumar, G. Swamy, 2011 .

N -{3-(4-Chlorophenyl)-6-[( Z )-(4-chlorophenyl)methylidene]-2-phenyl-2-azabicyclo[2.2.2]oct-5-ylidene}anilineImino Diels–Alder adducts. X .

Krishnan Ravikumar, Balasubramanian Sridhar, M. Mahesh, 2006 .

Polymorphism in metformin embonate salt – recurrence of dimeric and tetrameric guanidinium–carboxylate synthons

B. Sreedhar, B. Sridhar, J. Nanubolu, 2013 .

Sorafenib and its tosylate salt: a multikinase inhibitor for treating cancer.

B. Sridhar, K. Ravikumar, A. K. S. Bhujanga Rao, 2011, Acta crystallographica. Section C, Crystal structure communications.

7′-(4-Methoxyphenyl)chroman-3-spiro-6′-hexahydro-1H-pyrrolo[1,2-c]thiazole-5′-spiro-3′′-1′′H-indole-4,2′′(3′′H)-dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

Conformational interconversions in peptide β-turns: Discrimination between enantiomeric conformations by chiral perturbation

S. Banumathi, D. Velmurugan, P. Balaram, 1998 .

1-{2-[(Anthracen-10-yl)methyleneamino]phenyl}-3-phenylthiourea

D. Gayathri, K. Ravikumar, M. Kandaswamy, 2008, Acta crystallographica. Section E, Structure reports online.

3-(4-Methoxyphenyl)-6-(phenylsulfonyl)perhydro-1,3-thiazolo[3′,4′:1,2]pyrrolo[4,5-c]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006, Acta crystallographica. Section E, Structure reports online.

Synthesis and structural analysis of isomeric pyridinophanes and thiacyclophanes

D. Velmurugan, P. Rajakumar, K. Ravikumar, 2005 .

Four cocrystals of thymine with phenolic coformers: influence of the coformer on hydrogen bonding.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2015, Acta crystallographica. Section C, Structural chemistry.

1,8‐Bis(3‐formyl‐5‐methyl‐2‐oxidobenzyl)‐1,8‐diaza‐4,11‐diazoniacyclotetradecane chloroform solvate

D. Velmurugan, D. Gayathri, V. Narayanan, 2006 .

Crystal Structure of Lamotriginium Hydrogen Phthalate Dimethylformamide Solvate (1:1:1)

B. Sridhar, K. Ravikumar, 2006 .

Molecular and Crystal Engineering Studies of Two 2,4-Dinitroalkoxystilbenes: An Endeavor To Generate Efficient SHG Crystal

J. Sarma, K. Ravikumar, K. Bhanuprakash, 1994 .

Structural and spectral characterization of a new non-centrosymmetric organic thiosulfate.

B. Sridhar, K. Ravikumar, B. R. Srinivasan, 2013, Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy.

3‐[α‐(4‐Methoxyphenyl)‐β‐phenylvinyl]‐2‐methyl‐1‐phenylsulfonyl‐1H‐indole

D. Velmurugan, K. Ravikumar, G. Usha, 2005 .

Chains of edge-fused hydrogen-bonded R(3)3(22) rings in 5,3'-dihydroxy-3,6,7,4',5'-pentamethoxyflavone.

B. Sridhar, K. Ravikumar, G. Swamy, 2006, Acta crystallographica. Section C, Crystal structure communications.

Crystal structure and characterization of a novel organic crystal: 4-Dimethylaminobenzophenone

P. Ramasamy, B. Sridhar, G. A. Babu, 2009 .

Crystal structure and characterization of a novel organic optical crystal: 4‐chloro‐3‐nitrobenzophenone

P. Ramasamy, G. A. Babu, K. Ravikumar, 2009 .

Observation of neutral, ionic and intermediate states in lamotrigine-acid complexes- inference from crystallographic bond geometries

B. Sridhar, J. Nanubolu, K. Ravikumar, 2014 .

Solvent-mediated pseudo-quadruple hydrogen-bond motifs in three lamotrigine-carboxylic acid complexes.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2013, Acta crystallographica. Section C, Crystal structure communications.

Crystal Forms of the Antiepileptic Lamotrigine: Molecular Salts and Solvates with Fluorobenzoic Acid, Nicotinic Acid, 2-Thiobarbituric Acid, 3-Picoline and Butyl Alcohol

B. Sridhar, K. Ravikumar, 2011 .

Molecular Association of Almotriptan with Oxalate and Terephthalate Anions

B. Sridhar, H. Krishnan, A. Singh, 2011 .

Lamotrigine, an antiepileptic drug, and its chloride and nitrate salts.

Balasubramanian Sridhar, Krishnan Ravikumar, B. Sridhar, 2009, Acta crystallographica. Section C, Crystal structure communications.

Lamotrigine dimethylformamide sesquisolvate

B. Sridhar, K. Ravikumar, 2006 .

Lamotriginium benzoate dimethylformamide solvate

B. Sridhar, K. Ravikumar, 2005 .

Antifeedant neo-clerodanes from Teucrium tomentosum Heyne. (Labiatae).

S. S. Rajan, K. Ravikumar, R. Malathi, 2003, Phytochemistry.

Supramolecular hydrogen-bonding networks in bis(adeninium) phthalate phthalic acid 1.45-hydrate.

B. Sridhar, K. Ravikumar, 2007, Acta crystallographica. Section C, Crystal structure communications.

Three novel benzothiazine-fused triazoles as potential centrally acting muscle relaxants.

B. Sridhar, K. Ravikumar, V. Hariharakrishnan, 2012, Acta crystallographica. Section C, Crystal structure communications.

Synthesis of 9-Substituted Derivatives of tert-Butyl 6-(9h-Purin-6-Ylthio)

K. Ravikumar, K. Ravindhranath, Ra Chem Pharma, 2013 .

Methyl 4-(4-methoxybenzylidenemethyl)-3,5-dinitrobenzoate

P. G. Aravindan, D. Velmurugan, K. Ravikumar, 2004 .

Correlating the melting point alteration with the supramolecular structure in aripiprazole drug cocrystals

J. Nanubolu, K. Ravikumar, 2016 .

A clerodane diterpenoid from Pulicaria wightiana

B. Sridhar, B. Das, K. Ravikumar, 2005 .

Methyl 4-phenyl-1,2,3,3a,4,4a,5,12c-octahydronaphtho[1′,2′:3,2]furo[5,4-b]pyrrolizine-4a-carboxylate

B. Sridhar, R. Raghunathan, S. Kathiravan, 2010, Acta crystallographica. Section E, Structure reports online.

Competition between the two-point and three-point synthon in cytosine–carboxylic acid complexes

B. Sridhar, J. Nanubolu, K. Ravikumar, 2012 .

Supramolecular hydrogen-bonding networks in cytosine salicylic acid hydrate (2 : 3 : 2) complex

B. Sridhar, K. Ravikumar, 2010 .

N-{6-[(Z)-Benzylidene]-2,3-diphenyl-2-azabicyclo[2.2.2]octan-5-ylidene}aniline

B. Sridhar, K. Ravikumar, M. Mahesh, 2005 .

Sixth polymorph of aripiprazole - an antipsychotic drug

B. Sridhar, J. Nanubolu, K. Ravikumar, 2012 .

The first polymorph in the family of nucleobases: a second form of cytosine.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2015, Acta crystallographica. Section C, Structural chemistry.

Synthesis, crystal structure, hirshfeld surface analysis, molecular docking and molecular dynamics studies of novel olanzapinium 2,5-dihydroxybenzoate as potential and active antipsychotic compound

T. Hussain, A. Nayarisseri, K. Ravikumar, 2022, Journal of Experimental Nanoscience.

2-[2-(Methylamino)-3-nitro-4H-chromen-4-yl]phenyl acetate

D. Velmurugan, D. Gayathri, H. Rao, 2007 .

Structures of benzoxazine-fused triazoles as potential diuretic agents.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2012, Acta crystallographica. Section C, Crystal structure communications.

The 1:1 inclusion compounds zolmitriptan-benzene and zolmitriptan-phenol.

B. Sridhar, K. Ravikumar, H. Krishnan, 2007, Acta crystallographica. Section C, Crystal structure communications.

Clindamycin hydrochloride monohydrate and its ethanol solvate.

B. Sridhar, K. Ravikumar, 2010, Acta crystallographica. Section C, Crystal structure communications.

Role of halogen-halogen contacts in the crystal structures of three new solvates of the drug oxyclozanide.

B. Sridhar, K. Ravikumar, 2017, Acta crystallographica. Section C, Structural chemistry.

Three isostructural solvates of a tetrahydrofurochromenone derivative.

B. Sridhar, J. Nanubolu, B. Reddy, 2017, Acta crystallographica. Section C, Structural chemistry.

Structural consequences of weak interactions in dispirooxindole derivatives.

B. Sridhar, J. Nanubolu, B. Reddy, 2015, Acta crystallographica. Section C, Structural chemistry.

Four oxoindole-linked α-alkoxy-β-amino acid derivatives.

B. Sridhar, J. Nanubolu, B. Reddy, 2015, Acta crystallographica. Section C, Structural chemistry.

Polymorphism in R-tamsulosin (an alpha blocker): The unexpected manifestation of a sulfonamide⋯ o -diethoxybenzene heterosynthon

B. Sridhar, J. Nanubolu, K. Ravikumar, 2014 .

Tetra- and hexahydrates of bis(adeninium) zoledronate.

B. Sridhar, B. Varghese, K. Ravikumar, 2014, Acta crystallographica. Section C, Structural chemistry.

Tosylate salts of the anticancer drug lapatinib.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2013, Acta crystallographica. Section C, Crystal structure communications.

Zolmitriptan oxalate and zolmitriptan camphorsulfonate: the first structural study of salt complexes of the antimigraine drug zolmitriptan.

B. Sridhar, K. Ravikumar, V. Hariharakrishnan, 2013, Acta crystallographica. Section C, Crystal structure communications.

Frovatriptan salts of aliphatic carboxylic acids.

B. Sridhar, J. Nanubolu, K. Ravikumar, 2013, Acta crystallographica. Section C, Crystal structure communications.

Multiple hydrogen bonds in cytosinium zoledronate trihydrate.

B. Sridhar, K. Ravikumar, 2011, Acta crystallographica. Section C, Crystal structure communications.

Two polymorphs of safinamide, a selective and reversible inhibitor of monoamine oxidase B.

B. Sridhar, K. Ravikumar, 2010, Acta Crystallographica Section C: Crystal Structure Communications.

Lenalidomide, an antineoplastic drug, and its hemihydrate.

B. Sridhar, K. Ravikumar, 2009, Acta crystallographica. Section C, Crystal structure communications.

Halide salts of antimigraine agents eletriptan and naratriptan.

B. Sridhar, A. Singh, K. Ravikumar, 2008, Acta crystallographica. Section C, Crystal structure communications.

2-[(2-Chloro-5-phenyl-3-pyridinyl)(hydroxy)methyl]acrylonitrile

V. Rao, K. Ravikumar, G. Swamy, 2005 .

Crystal and molecular structures of quinazolines: A ring conformational study

K. Ravikumar, G. Swamy, 2005 .

1′-Nitro-2′-(3-nitrophenyl)-2′,3′,5′,6′,7′,7a′-hexahydroindan-2-spiro-3′-1′H-pyrrolizine-1,3-dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

2′‐Benzoyl‐1′‐(4‐chlorophenyl)‐5′,6′,7′,7a′‐tetrahydrospiro[indan‐2,3′(2′H)‐1H‐pyrrolizine]‐1,3‐dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

1′-Methyl-4′-(1-naphthyl)-1′′,2′′,3′′,4′′-tetrahydroindane-2-spiro-2′-pyrrolidine-3′-spiro-2′′-naphthalene-1,3,1′′-trione

B. Sridhar, R. Raghunathan, K. Ravikumar, 2011, Acta Crystallographica Section E.

Methyl 3-[(1H-benzimidazol-1-yl)methyl]-1-methyl-4-(4-methylphenyl)-2′-oxopyrrolidine-2-spiro-3′-1-benzimidazole-3-carboxylate

B. Sridhar, R. Raghunathan, K. Ravikumar, 2010, Acta crystallographica. Section E, Structure reports online.

Context-dependent conformation of diethylglycine residues in peptides.

S. Banumathi, D. Velmurugan, P. Balaram, 2000, The journal of peptide research : official journal of the American Peptide Society.

A furodysinin lactone derivative from the marine sponge Dysidea fragilis

Y. Venkateswarlu, K. Ravikumar, P. Krishnaiah, 2004 .

Regioselective Free Radical Cyclization: A General Method for the Synthesis of the Spiro(4.4)nonane System of Fredericamycin A.

K. Ravikumar, A. Rao, A. Singh, 1994 .

3-[(E)-2,4-Dichlorobenzylidene]-1-methylpiperidin-4-one

K. Ravikumar, D. Gayathri, D. Velmurugan, 2008, Acta crystallographica. Section E, Structure reports online.

2′‐(2‐Chlorophenyl)‐1′‐nitro‐2′,3′,3a',4′,5′,6′‐hexahydroindan‐2‐spiro‐3′‐1′H‐pyrrolizine‐1,3‐dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

1′-Methylacenapthylene-1(2H)-spiro-2′-pyrrolidine-3′-spiro-2′′(3′′H)-carbazole-2,1′′(4′′H)-dione

D. Velmurugan, G. Periyasami, D. Gayathri, 2007 .

Structure of naproxen, C14H14O3

V. Pattabhi, K. Ravikumar, E. Gabe, 1985 .

Molecular and Crystal Structure of Efavirenz, a Potent and Specific Inhibitor of HIV-1 Reverse Transcriptase, and Its Monohydrate

B. Sridhar, K. Ravikumar, 2009 .

Synthesis and X-ray crystal structure of 1,3,5-tris(fluoren-9-ylidenemethyl)benzene: towards a C48-fragment of [60]-fullerene

G. Mehta, K. Ravikumar, K. V. Rao, 1995 .

Synthesis and X‐Ray Crystal Structure of 1,3,5‐Tris(fluoren‐9‐ ylidenemethyl)benzene: Towards a C48‐Fragment of (60)‐Fullerene.

G. Mehta, K. Ravikumar, K. V. Rao, 2010 .

N,6‐Dimethyl‐4‐(methylsulfanyl)‐3‐nitro‐4H‐chromen‐2‐amine

D. Velmurugan, D. Gayathri, H. Rao, 2006 .

N-Benzyl-N-[4-(methylsulfanyl)-3-nitro-4H-chromen-2-yl]amine

D. Velmurugan, H. Rao, K. Ravikumar, 2006 .

A stereoisomer of bharangin triacetate

B. Sridhar, K. Ravikumar, M. M. Murthy, 2005 .

1′,1′′-Dimethyl-4′-(naphthalen-1-yl)-1,2,3,4-tetrahydronaphthalene-2-spiro-3′-pyrrolidine-2′-spiro-3′′-indoline-1,2′′-dione

R. Raghunathan, K. Ravikumar, S. Selvanayagam, 2011, Acta crystallographica. Section E, Structure reports online.

Darifenacin hydrobromide

B. Sridhar, K. Ravikumar, S. Selvanayagam, 2009, Acta crystallographica. Section E, Structure reports online.

3-[(E)-4-Methoxybenzylidene]-1-methylpiperidin-4-one

K. Ravikumar, D. Gayathri, Devadasan Velmurugan, 2008, Acta crystallographica. Section E, Structure reports online.

N-(1-Acetyl-r-7,c-9-diphenyl-4,8-dithia-1,2-diazaspiro[5.4]dec-2-en-3-yl)acetamide

D. Velmurugan, D. Gayathri, K. Ravikumar, 2008, Acta crystallographica. Section E, Structure reports online.

1′-Phenyl-6′-thiacycloheptane-1-spiro-2′-perhydropyrrolizine-3′-spiro-3′′-indoline-2,2′′-dione

D. Gayathri, K. Ravikumar, S. Sundaramoorthy, 2008, Acta crystallographica. Section E, Structure reports online.

1-(Benzylideneacetyl)-2-phenyl-1,2,3,5,10,10a-hexahydro-1H-pyrrolo[1,2-b]isoquinoline-3-spiro-3′(2′H)-1H-indol-3′-one

D. Velmurugan, G. Periyasami, D. Gayathri, 2007 .

Ethyl 2-(1H-indol-3-yl)-5-[1-(4-methoxyphenyl)-4-oxo-3-phenylazetidin-2-yl]-4-nitro-3-(p-tolyl)pyrrolidine-2-carboxylate

D. Velmurugan, D. Gayathri, N. Arumugam, 2007 .

4′-Ferrocenyl-3′-(4-methoxybenzoyl)-1′-methylspiro[1H-indole-3(2H),2′-pyrrolidin]-2-one

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

(2R,3aR,4S,6aR,7aR)-cis-4-Benzyl-2-(4-bromophenyl)-5-(4-methylphenylsulfonyl)perhydrothiazolidino[3,4-a]pyrrolo[4,5-c]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

3-(1,3-Benzodioxol-5-yl)-2-bromo-1-(2,4-dichloro-5-fluorophenyl)prop-2-en-1-one

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

4′‐(4‐Chlorophenyl)‐1′‐methylcycloheptane‐1‐spiro‐3′‐pyrrolidine‐2′‐spiro‐2′′‐indan‐2,1′′,3′′‐trione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

3-(4-Methoxyphenyl)-1′,6,6-trimethyl-4,5,6,7-tetrahydrospiro[1-benzofuran-2,3′(3H,2′H)-1H-indole]-2′,4-dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

1′-Methyl-4′-phenylindan-2-spiro-2′-pyrrolidine-3′-spiro-1′′-cyclooctane-1,3,2′′-trione

D. Velmurugan, K. Ravikumar, S. Selvanayagam, 2006 .

1′-Methyl-5-diphenyl-4′- p -tolyl-5,6,7,8,9,10-hexahydro-1,3-cycloheptapyrimidino[2,3- b ]thiazole-2-spiro-3′-pyrrolidine-2′-spiro-3′′-1 H -indole-2′′,3(2 H ,3′′ H )-dione

D. Gayathri, Devadasan Velmurugan, Mahalingam Poornachandran, 2006 .

3′′‐(4‐Bromobenzylidene)‐4′‐(4‐bromophenyl)‐1′‐methylindan‐2‐spiro‐2′‐pyrrolidine‐3′‐spiro‐1′′‐cyclohexane‐1,3,2′′‐trione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

2-(2,6-Diphenylpiperidin-1-yl)ethanol

D. Velmurugan, D. Gayathri, H. Rao, 2006 .

Ethyl 5‐hydroxy‐3‐(3‐methoxybenzoyl)‐1′,5‐dimethyl‐2′‐oxo‐4,5‐dihydro‐1′H‐spiro[furan‐2(3H),3′(2′H)‐indole]‐4‐carboxylate

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

4′‐(4‐Chlorophenyl)‐1′‐methylindan‐2‐spiro‐2′‐pyrrolidine‐3′‐spiro‐2′′(1′′H)‐carbazole‐1,3,3′′(4′′H)‐trione

D. Velmurugan, G. Periyasami, D. Gayathri, 2006 .

1′-Methyl-4′-phenyl-1H-indole-3-spiro-2′-pyrrolidine-3′-spiro-1′′-cyclooctane-2(3H),2′′-dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

Dimethyl 4-{4-[2-(dimethylamino)ethoxy]phenyl}-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

K. Ravikumar, R. Bansal, P. Jain, 2006 .

2,6-Diphenyl-1-propylpiperidine

D. Velmurugan, D. Gayathri, H. Rao, 2006 .

3‐(4‐Bromophenyl)‐6‐(p‐tosyl)perhydrothiazolidino[3,4‐a]pyrrolo[4,5‐c]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

2-(4-Bromophenyl)-5-(phenylsulfonyl)perhydrothiazolo[3,4-a]pyrrolo[4,5-c]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

Acenapthene-2-spiro-5′-perhydrodipyrrolo[1,2-a;2′,1′-c]pyrazine-6′-spiro-2′′-acenapthene-1,1′′-dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

3‐Benzylidene‐3′,7′‐diphenylcyclohexanespiro‐6′‐(perhydro‐2‐thiapyrrolizidine)‐5′‐spiro‐3′′‐1H‐indole‐2,2′′‐dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2006 .

1-(3-Nitrophenyl)-5-tosylperhydropyrrolo[3,4-b]pyrrole

D. Velmurugan, D. Gayathri, K. Ravikumar, 2006 .

3‐Acetyl‐4‐furyl‐1‐methylspiro[pyrrolidine‐2,2′‐indol]‐2′(3′H)‐one

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2006 .

Crystal structures of substituted imidazolidine derivatives

B. Sridhar, K. Ravikumar, M. Mahesh, 2006 .

16‐Cyano‐13α‐(5‐methyl‐1,3,4‐oxadiazol‐2‐yl)‐13,16‐seco‐17‐norandrost‐4‐en‐3‐one

B. Sridhar, K. Ravikumar, R. Bansal, 2006 .

3,t-6-Dihydroxy-t-5-methoxycarbonyl-c-6-methyl-r-4-phenyl-4,5,6,7-tetrahydro-1H-indazole

B. Sridhar, K. Ravikumar, V. Parthasarathi, 2006 .

c‐5‐Hydroxy‐r‐2,c‐4‐bis(isopropoxycarbonyl)‐t‐5‐methyl‐t‐3‐phenylcyclohexanone

K. Murugavel, K. Ravikumar, V. Parthasarathi, 2006 .

17‐Allyl‐16,17a‐dioxo‐17‐aza‐d‐homoestra‐1,3,5(10)‐trien‐3‐ol

B. Sridhar, K. Ravikumar, R. Bansal, 2006 .

Crystal Structure of 3a-Hydroxy-3,5a,9-trimethyl 1,3,3a,4,5,5a,6,7,8,9b decahydro-2H naphtha[1,2c]-imidazole-2-one Monohydrate from the Plant Sphaeranthus indicus

D. Velmurugan, M. B. Rajani, K. Ravikumar, 2005 .

6‐[(Z)‐Benzylidene]‐2,3‐diphenyl‐2‐azabicyclo[2.2.2]octan‐5‐one

B. Sridhar, K. Ravikumar, M. Mahesh, 2005 .

1′‐Phenyl‐2′,3′,5′,6′,7′,7a′‐hexahydroindan‐2‐spiro‐2′‐1H‐pyrrolizine‐3′‐spiro‐11′‐indeno[1,2‐b]quinoxaline‐1,3‐dione. Corrigendum

P. G. Aravindan, D. Velmurugan, D. Gayathri, 2005 .

4'-(4-Methylphenyl)-3'-nitrospiro[1 H -indole-3,2'-pyrrolidin]-2-one

Krishnan Ravikumar, S. Selvanayagam, P. Rathisuganya, 2005 .

4‐[3‐Benzoyl‐4‐(4‐chlorophenyl)‐1‐methylpyrrolidin‐2‐yl]‐1‐(4‐methoxyphenyl)‐3‐phenylazetidin‐2‐one

D. Velmurugan, K. Ravikumar, S. Selvanayagam, 2005 .

3,3,6,6‐Tetramethyl‐9‐(2‐oxo‐1,2‐dihydroquinolin‐3‐yl)‐1,2,3,4,5,6,7,8‐octahydro‐9H‐xanthene‐1,8‐dione

D. Velmurugan, K. Ravikumar, S. Selvanayagam, 2005 .

4′-(4-Methoxyphenyl)-1′-methyl-9H-fluorene-9-spiro-3′-pyrrolidine-2′-spiro-2′′-indan-1′′,3′′-dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

1‐(p‐Bromophenyl)‐5‐p‐tosylperhydropyrrolo[3,4‐b]pyrrole

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

Methyl 2‐(1H‐indol‐3‐ylmethyl)‐1,2,3,3a,4,11c‐hexahydronaphtho[2′,1′:2,3]pyrano[4,5‐b]pyrrole‐2‐carboxylate

D. Velmurugan, R. Raghunathan, N. Arumugam, 2005 .

4′‐(4‐Methoxyphenyl)‐1‐methylchroman‐3‐spiro‐3′‐pyrrolidine‐2′‐spiro‐2′′‐indan‐4,1′′,3′′‐trione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

The natural naphthoquinone sterekunthal-B

B. Sridhar, S. Reddy, K. Ravikumar, 2005 .

1′-Methyl-2′′-phenylcyclohexane-1-spiro-4′-[acenaphthene-1-spiro-2′-pyrrolidine-3′-spiro-4′′(5′′H)-[1,3]oxazole]-2,5′′-dione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

1′‐Methyl‐4′‐phenyl‐H‐fluorene‐9‐spiro‐3′‐pyrrolidine‐2′‐spiro‐3′′‐1H‐indol‐2′'(3′′H)‐one

P. G. Aravindan, D. Velmurugan, R. Raghunathan, 2004 .

5′′-Benzylidene-1′,1′′-dimethyl-4′-phenylacenapthene-2-spiro-2′-pyrrolidine-3′-spiro-3′′-piperidine-1,4′′-dione

P. G. Aravindan, D. Velmurugan, R. Raghunathan, 2004 .

4′-(4-Methoxybenzoyl)-1′-methyl acenaphthene-1-spiro-2′-pyrrolidine-3′-spiro-3′′-1H-indole-2,2′′(1H,3′′H)-dione hemihydrate

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

5,7‐Dibromo‐4′‐(4‐bromobenzoyl)‐1′‐methyl‐1H‐indole‐3‐spiro‐2′‐pyrrolidine‐3′‐spiro‐3′′‐1H‐indole‐2,2′′(3H,3′′H)‐dione methanol solvate

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2004 .

1′‐Methyl‐4′‐phenylacenaphthene‐1‐spiro‐2′‐pyrrolidine‐3′‐spiro‐2′'‐indan‐2,1′′,3′′‐trione

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

5,7-Dibromo-1′-methyl-2′-(4-methoxybenzoyl)-1H-indole-3-spiro-2′-pyrrolidine-3′-spiro-3′′-1H-indole-2,2′′(3H,3′′H)-dione methanol solvate

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2004 .

1′‐Methyl‐4′‐(3,4,5‐trimethoxyphenyl)dispiro[indene‐2,3′‐pyrrolidine‐2′,3′′‐indole]‐1,2′',3(1′′H)‐trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2004 .

2′‐(4‐Bromobenzoyl)acenaphthene‐1‐spiro‐3′‐pyrrolizidine‐1′‐spiro‐3′′‐indole‐2,2′′(1H,3′′H)‐dione monohydrate

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2004 .

1-Methyl-4′-(3-nitrophenyl)-1H-indole-3-spiro-2′-pyrrolidine-3′-spiro-2′′-indan-2,1′′,3′′-trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2003 .

2′‐(p‐Methoxybenzoyl)‐1′,2,2′,3,5′,6′,7′,7a′‐octahydro‐1H‐indan‐2‐spiro‐3′‐(3′H‐pyrrolizine)‐1′‐spiro‐3′′‐1H‐indoline‐1,2′′,3‐trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2003 .

2′‐Benzoyl‐1′,2,2′,3,4′,5′,6′,6a′‐octahydro‐1H‐indan‐2‐spiro‐3′‐(3′H‐pyrrolizine)‐1′‐spiro‐3′′‐1H‐indoline‐1,2′′,3‐trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2003 .

Spiro-[2-3′]oxindole-spiro-[3-3′′]oxindole-4[p-methylbenzyl]pyrrolidizine

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2003 .

Crystal structure of olanzapinium benzoate (1:1)

B. Sridhar, K. Ravikumar, 2007 .

4′-(4-methoxyphenyl)-1′-methyl-5-diphenyl-5,6,7,8,9, 10-hexahydro-1,3-cyclooctapyrimidino-[2,3-b]thiazole-2-spiro-3′- pyrrolidine-2′-spiro-3″-1H-indole-2″,3(2H,3″H)-dione

D. Velmurugan, D. Gayathri, K. Ravikumar, 2007 .

Crystal Structure of 1-N-Methyl-spiro-[2-3′]oxindole-spiro[3-2″]-indane-1″,3″-dione-4-(p-methyl phenyl)pyrrolidine

P. G. Aravindan, D. Velmurugan, R. Raghunathan, 2006 .

Crystal Structure of 1-N-Methyl-2[1′-N-(p-methoxyphenyl)-3′-phenylazetidine-2′-one]-3-(p-methoxybenzoyl)spiro[4.4″]-oxindole-pyrrolidine

D. Velmurugan, R. Raghunathan, N. Arumugam, 2006 .

Crystal Structure of Acenaphthene-1′-one-spiro[2′.3]-[4-ethoxycarbonyl]-1N-methyl-pyrrolidine-spiro[2.2″]oxindole

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2006 .

A neo-clerodane diterpene from Teucrium tomentosum

S. S. Rajan, G. Krishnakumari, K. Ravikumar, 2004 .

2′-(p-Chlorobenzoyl)-2,2′,3,3′,4′,5′,6′,6a′-octahydro-1H-indan-2-spiro-3′-(1H-pyrrolizine)-1′-spiro-3′′-indoline-1,2′′,3-trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2004 .

4′-(3-Chlorophenyl)-1-methyl-1H-indole-3-spiro-2′-pyrrolidine-3′-spiro-2′′-indan-2,1′′,3′′-trione

P. R. Seshadri, D. Velmurugan, R. Raghunathan, 2004 .

1-[5-(4-Fluorophenyl)-1,2-oxazol-3-ylmethyl]-2-nitroiminoimidazolidine

B. Sridhar, K. Ravikumar, M. Mahesh, 2006 .

Ethyl 4,6‐Dimethoxy‐9‐phenylsulfonylcarbazole‐3‐carboxylate

D. Velmurugan, L. Govindasamy, A. Mohanakrishnan, 1997 .

N-(3-Iodopropyl)phthalimide

K. Ravikumar, K. Chandramohan, Shenigarapu Rajendar, 2000 .

Characterization of IndianAyurvedicherbal medicines for their metal concentrations using WD-XRF spectrometry

K. Ravikumar, G. Swamy, 2010 .

Almotriptan, an antimigraine agent, and its malate salt.

B. Sridhar, A. Singh, K. Ravikumar, 2008, Acta Crystallographica Section C: Crystal Structure Communications.

Zolmitriptan, an antimigraine drug

B. Sridhar, K. Ravikumar, H. Krishnan, 2007 .

Rizatriptan benzoate, a drug for the treatment of migraine headache

B. Sridhar, K. Ravikumar, H. Krishnan, 2007 .

Sumatriptan, an antimigraine drug

B. Sridhar, K. Ravikumar, H. Krishnan, 2006 .

α-{3-[2-(Dimethylammonio)ethyl]-1H-indol-5-yl}-N-methylmethanesulfonamide succinate (sumatriptan succinate)

K. Ravikumar, H. Krishnan, G. Swamy, 2004 .

4‐Amino‐1‐(4‐nitrobenzyl)pyridinium bromide

K. Ravikumar, P. Venkatesan, V. Parthasarathi, 2006 .

1′-Methyl-4′-(1-naphthyl)-1′′,2′′,3′′,4′′-tetrahydroindane-2-spiro-2′-pyrrolidine-3′-spiro-2′′-naphthalene-1,3,1′′-trione

B. Sridhar, R. Raghunathan, K. Ravikumar, 2011, Acta crystallographica. Section E, Structure reports online.

4-Methyl-2-[(4-nitrophenylimino)methyl]phenol

D. Velmurugan, D. Saravanakumar, D. Gayathri, 2007 .

Crystal structures of two substituted key intermediates of phenothiazine derivatives

K. C. Mohan, K. Ravikumar, M. M. Shetty, 2003 .

Structure of mangostin acetate

K. Ravikumar, K. Sivakumar, S. Rajan, 1988 .

Crystal Structure of L-Histidinium 2-Nitrobenzoate

K. Ravikumar, J. Kalyana Sundar, S. Natarajan, 2012, Journal of amino acids.

Pseudoguaianolides from the Flowers of Parthenium hysterophorus

Y. Tzeng, B. Das, K. Ravikumar, 2006 .

(3R*,6S*,6aR*,9S*,9aS*)‐6,6a,9‐Trihydroxy‐3,6,9a‐trimethylperhydroazuleno[1,2‐b]furan‐2‐one

B. Das, K. Ravikumar, G. Swamy, 2005 .

8,12‐Dioxa‐1,7,10(1,2)‐tribenzenacyclododecaphane‐2,5‐dien‐4‐one

D. Velmurugan, R. Raghunathan, K. Ravikumar, 2005 .

30,31-Dimethyl-3,26-dioxa-11,18-diazapentacyclo[26.4.0.04,9.012,17.020,25]dotriconta-1(32),4,6,8,12,14,16,20,22,24,28,30-dodecaene-10,19-dione

D. Velmurugan, P. Rajakumar, K. Ravikumar, 2003 .

Synthesis of fluorine containing N-benzyl-1,2,3-triazoles and N-methyl-pyrazoles from conjugated alkynes

K. Ravikumar, B. Lingaiah, P. S. Rao, 2006 .

New lamellarin alkaloids from the Indian ascidian Didemnum obscurum and their antioxidant properties.

T. V. Raju, M. Srinivasulu, V. Reddy, 2004, Journal of natural products.

Synthesis of Fluorine‐Containing N‐Benzyl‐1,2,3‐triazoles and N‐Methyl‐pyrazoles from Conjugated Alkynes.

K. Ravikumar, B. Lingaiah, P. S. Rao, 2006 .

Organocobaloximes in organic synthesis an unusual radical-dependent five-member cyclization

Sujit Roy, K. Ravikumar, I. Das, 1997 .

4′-Amino-2,2′′-dioxo-2,2′′,3,3′′-tetrahydro-1H-indole-3-spiro-1′-cyclopent-3′-ene-2′-spiro-3′′-1H-indole-3′,5′,5′-tricarbonitrile dihydrate

D. Velmurugan, D. Gayathri, G. Shanthi, 2008, Acta crystallographica. Section E, Structure reports online.

Crystal Structure of an Adduct: 2,3,5-Substituted Derivative of Pyridine

V. Rao, K. Ravikumar, G. Swamy, 2006 .

A Synthetic Approach Towards Pinakene, a C28H14 Fragment of (70)- Fullerene.

G. Panda, G. Mehta, K. Ravikumar, 1997 .

Four oxoindole-linked α-alkoxy-β-amino acid derivatives.

B. Sridhar, J. Nanubolu, B. Reddy, 2015, Acta crystallographica. Section C, Structural chemistry.

Counter ion effect in Au/Ag-catalyzed chemoselective 6-endo-dig N- and O-cyclizations of enyne-urea system: diversity-oriented synthesis of annulated indoles.

B. Kundu, K. Ravikumar, Sahaj Gupta, 2013, The Journal of organic chemistry.

Sorafenib and its tosylate salt: a multikinase inhibitor for treating cancer.

B. Sridhar, K. Ravikumar, M. Pulla Reddy, 2011, Acta crystallographica. Section C, Crystal structure communications.