1
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy: Process for ezetimibe intermediate. Hetero Drugs, Caesar Rivise Bernstein Cohen & Pokotilow, June 27, 2006: US07067675 (12 worldwide citation)

The invention provides a process for preparing intermediate of ezetimibe, which shows hypocholesterolemic activity. Thus 3-[5-(4-fluorophenyl)-1,5-dioxopentyl]-4-phenyl-2-oxazolidinone is reduced with (−)-DIP chloride to obtain 3-[(5S)-5-(4-fluorophenyl)-5-hydroxy-1-oxopentyl]-4-phenyl-2-oxazolidino ...


2
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy: Process for substituted sulfoxides. Hetero Drugs, Caesar Rivise Bernstein Cohen & Pokotilow, February 13, 2007: US07176319 (3 worldwide citation)

The present invention relates to a process for preparing substituted sulfoxides either as a single enantiomer or in an enantiomerically enriched form. Thus, racemic omeprazole is reacted with (S)-camphorsulfonyl chloride to form a diastereomeric mixture and the diastereomers are separated by fractio ...


3
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy: Polymorphs of tolterodine tartrate. Hetero Drugs, Caesar Rivise Bernstein Cohen & Pokotilow, July 1, 2008: US07393874 (2 worldwide citation)

The present invention relates to novel polymorphs of tolterodine tartrate, to processes for their preparation and to pharmaceutical compositions containing them.


4
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy: Stereoselective synthesis of benzimidazole sulfoxides. Hetero Drugs, Caesar Rivise Bernstein Cohen & Pokotilow, May 8, 2012: US08173817 (1 worldwide citation)

The present invention relates to a process for stereoselective synthesis of substituted sulfoxides either as a single enantiomer or in an enantiomerically enriched form. Thus, 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]thio]-1H-benzimidazole is reacted with (R)-camphorsulfonyl chloride ...


5
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy: Polymorphs of efavirenz. Hetero Drugs, Cantor Colburn, August 14, 2012: US08242267 (1 worldwide citation)

The present invention relates to novel amorphous and crystalline forms of efavirenz, processes for their preparation and pharmaceutical compositions containing them. In accordance with the present invention efavirenz crude is dissolved in acetone at 25° C.-30° C., the solution is slowly added to wat ...


6
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Thungathurthy Srinivasa Rao: Polymorphs of sunitinib malate. Hetero Research Foundation, Caesar Rivise Bernstein Cohen & Pokotilow, December 11, 2012: US08329740 (1 worldwide citation)

The present invention provides a novel crystalline form of sunitinib malate, process for its preparation and to pharmaceutical composition containing it. The present invention also provides a process for preparation of sunitinib malate crystal form I. Thus, for example, sunitinib malate was added to ...


7
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy: Stereoselective synthesis of benzimidazole sulfoxides. Hetero Drugs, Caesar Rivise Bernstein Cohen & Pokotilow, April 29, 2008: US07365206 (1 worldwide citation)

The present invention relates to a process for stereoselective synthesis of substituted sulfoxides either as a single enantiomer or in an enantiomerically enriched form. Thus, 5-methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]thio]-1H-benzimidazol is reacted with (R)-camphorsulfonyl chloride ...


8
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy: Process for obtaining pure oseltamivir. Hetero Drugs, Caesar Rivise Bernstein, Cohen & Pokotilow, June 11, 2009: US20090149670-A1 (1 worldwide citation)

The present invention provides a process for obtaining highly pure crystalline form of oseltamivir free base, thus, for example, suspending or dissolving impure or non-crystalline oseltamivir free base in a hydrocarbon solvent and then isolating crystals to obtain oseltamivir free base in well defin ...


9
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Matta Ramakrishna Reddy: Process for preparation of valsartan intermediate. Hetero Research Foundation, Caesar Rivise Bernstein Cohen & Pokotilow, July 23, 2013: US08492577

The present invention provides a process for preparation of a key intermediate of valsartan in a pure form and use of this intermediate for the preparation of valsartan or a pharmaceutically acceptable salt in pure form.


10
Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Rapolu Raji Reddy, Kesireddy Subash Chander Reddy, Bandi Vamsi Krishna: Polymorphs of darunavir. HETERO RESEARCH FOUNDATION, Cantor Colburn, February 28, 2017: US09580440

The present invention provides novel solvated forms of darunavir and processes for their preparation. The present invention also provides novel processes for the preparation of darunavir amorphous form and pharmaceutical compositions comprising it. Thus, for example, darunavir 2-methyl-2-butanol sol ...