Msn Laboratories Private Limited

Dr. Reddy's Laboratories, Incorporated

Srinivasan Thirumalai Rajan

Sajja Eswaraiah

Manne Satyanarayana Reddy

Maramreddy Sahadeva Reddy

Gutta Madhusudhan

Venkat Reddy Ghojala

Muppa Kishore Kumar

Revu Satyanarayana

Chakilam Nagaraju

Achampeta Kodanda Ramprasad

Peri Seetha Rama Sarma

Suraparaju Raghuram

Komati Satyanarayana

Mummadi Venkatesh

Venkataraman Sundaram

Durgadas Shyla Prasad

Sunkara Vishnuvardhan

Mogal Khalil Ahamed

Jakku Malleswara Reddy

Laxmi Reddy Katta

Karamala Ramasubba Reddy

Boge Rajesham

Veera Venkata Naga Chandra Sekhar Bulusu

AlokKumar Srivastav

Ravi Kumar Kasturi

Sanjeev Kumar Aavula

Mokkarala Suryanarayana Murthy

Achampeta Kodanda Ram Prasad

Anugu Praneeth Kumar

Reddy Manne Satyanarayana

The present invention relates to an improved process for the preparation of [(1S,2R)-3-[[(4-aminophenyl)sulfonyl] (2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]-carbamic acid (3R,3aS,6aR)hexahydrofuro[2,3-b]furan-3-yl ester compound of formula-1 represented by the following structural formula: 

Process for the preparation of [(1S,2R)-3-[[(4-aminophenyl)sulfonyl] (2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]-carbamic acid (3R,3AS,6AR)hexahydro furo [2,3-B]furan-3-YL ester and its amorphous form

The present invention relates to an improved process for the preparation of amorphous (1S)-1,5-anhydro-1-[3-[[5 -(4-fluorophenyl)-2-thienyl]methyl]-4-methylphenyl]-D-glucitol compound of formula-1, represented by the following structural formula. 

Process for the preparation of amorphous (1S)-1,5-anhydro-1-[3-[[5-(4 fluorophenyl)-2-thienyl]-4-methylphenyl]-D-glucitol and its polymorphs thereof

The present invention is relates to an improved process for the preparation (1S,4S,7Z,10S,16E,21R)-7-ethylidene-4,21-bis(1-methylethyl)-2-oxa-12,13-dithia-5,8,20,23-tetraazabi-cyclo[8.7.6]tricos-16-ene-3,6,9,19,22-pentone of formula I. 

Process for the preparation of (1S, 4S, 7Z, 10S, 16E, 21R)-7-ethyldene-4,21-bis(1-methyl-ethyl)-2-oxa-12,13-dithia-5,8,20,23-tetraazabicyclo[8.7.6]tricos-16-ene-3, 6, 9, 19, 22-pentone

The present invention relates to process for the preparation of (2S)-N-((S)-1-((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-ylcarbamoyl)-2-phenyethyl)-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)-4- methylpentanamide represented by the following structural formula-1. 

Process for the preparation of (2S)-N-((S)-1-((S)-4-methyl-1-((R)-2-methyl oxiran-2-yl)-1-oxopentan-2-ylcarbamoyl)-2-phenylethyl)-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)-4-methylpentanamide

The present invention relates to novel processes for the preparation 1,3-Thiazol-5-ylmethyl[(2R,5R)-5-{[(2S)-2-[(methyl{[2-(propan-2-yl)-1,3-thiazol-4-yl]methyl} carbamoyl)amino]-4-(morpholin-4-yl)butanoyl]amino}-1,6-diphenylhexan-2-yl] carbamate having the following structural formula-1 and it's intermediates thereof. 

Process for the preparation of 1,3-thiazol-5-ylmethyl [(2R,5R)-5-{[(2s)-2-[(methyl{[2-(propan-2-yl)-1,3-thiazol-4YL] methyl} carbamoyl) amino]-4-(morpholin-4-yl)butanoyl]amino)-1,6-diphenylhexan-2-yl]carbamate

The present invention relates to crystalline 1,2-Propanediol solvate of N-(2-chloro-6-methylphenyl)-2-[[6-[4-(2-hydroxyethyl)-1-piperazinyl]-2-methyl-4-pyrimidinyl]amino]-5-thiazolecarboxamide compound of formula-1b, its process for the preparation and its use in the preparation of anhydrous crystalline form (N-6) and monohydrate of N-(2-chloro-6-methylphenyl)-2-[[6-[4-(2-hydroxy ethyl)-1-piperazinyl]-2-methyl-4-pyrimidinyl]amino]-5-thiazolecarboxamide. [formula] 1,2-Propanediol solvate Formula-1b. 

Crystalline forms of N-(2-chloro-6-methy]phenvn-2-[F6-[4-(2-hvdroxvethvl)-L-piperazin-vil-2-methvil-4-pvrimidinvllaminol-5-thiazolecarboxamide and their process thereof

The present invention relates to a process for the preparation of 4-[4-({[4-chloro-3-(trifluoromethyl)phenyl]carbamoyl}amino)-3-fluophenoxy]-N-methylpyridine-2-caroxamide compound of formula-I, its amorphous form and its crystalline polymorph-I which is represented by the following structural formula: (I) 

Process for the preparation of 4-[-({[4-choloro-3(trifluoromethyl)phenyl]carbamoyl}amino)-3-fluorophenoxy]-N-methylpyridine-2-carboxamide and its polymorphs thereof

The present invention relates to an improved process for the preparation of [[2(S)-[[4(R)-(3-hydroxyphenyl)-3(R),4-dimethyl-1-piperidinyl]methyl]-1-oxo-3-phenylpropyl]amino]acetic acid dihydrate, represented by the following structural formula (I).

Process for the preparation of [[2(S)-[[4(R)-(3-hydroxyphenyl)-3(R),4-dimethyl-1-piperidinyl]methyl]-1-oxo-3-phenylpropyl]amino]acetic acid dihydrate

The present invention provides a novel intermediate as well as novel polymorphs of 1-(4-methoxyphenyl)-7-oxo-6-[4-(2-oxopiperidin-1-yl)phenyl]-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide compound represented by the following structural formula-1 and processes for their preparation.

Intermediate and polymorphs of 1-(4-methoxypheny1)-7-oxo-6-[4-(2-oxopiperidin-1-yl)phenyl]-4,5,6,7-tetra hydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide and process thereof

Provided are novel salts of benzimidazole derivatives, preferably salts of benzimidazole derivatives which are useful intermediates in the synthesis of pure 1-methyl-2-[N-[4-(N-n-hexyloxycarbonylamidino)phenyl]aminomethyl]benzimidazol-5-yl-carboxylicacid-N-(2-pyridyl)-N-(2-ethoxycarbonylethyl)amide and its salts. 

Process for the preparation of benzimidazole derivatives and salts thereof

A process for the preparation of 4-[4-[4-[4-[[(3R,5R)-5-(2,4-difluorophenyl)tetrahydro-5-(1H-1,2,4-triazol-1-ylmethyl)-3-furanyl]methoxy]phenyl]-1-piperazinyl]phenyl]-2-[(1S,2S)-1-ethyl-2-hydroxypropyl]-2,4-dihydro-3H-1,2,4-triazol-3-one compound of formula-1, its intermediates and polymorphs thereof. (I). 

Process for the preparation of triazole antifungal drug, its intermediates and polymorphs thereof

An dabigatran etexilate intermediate of Formula-6a, and the use in the preparation of dabigatran etexilate thereof.

Process for the preparation of benzimidazole derivatives and its salts

The present invention relates to an improved process for the preparation of amide intermediates useful in the preparation of cholesterol reducing agents.

Process for the preparation of amide intermediates and their use thereof

Novel process for statins and its pharmaceutically acceptable salts thereof represented by general formula (I). 

Process for statins and its pharmaceutically acceptable salts thereof

Novel process for the preparation of statins and their pharmaceutically acceptable salts thereof represented by the general formula-(1) through novel intermediate compounds of general formula-(4). 

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Hyderabad Telangana, India

Srinivasan Thirumalai Rajan