Title:
PROCESS FOR PREPARATION OF SUBSTANTIALLY PURE FOSAMPRENAVIR CALCIUM AND ITS INTERMEDIATES
Document Type and Number:
WIPO Patent Application WO/2012/032389
Kind Code:
A3
Abstract:
The present invention relates to fosamprenavir calcium (la) substantially free of isomer impurity, (3R) tetrahydro-3-furanyl(1S,2R)-3-[[(4-aminophenyl) sulfonyl] (isobutyl) amino]- 1-benzyl-2-(phosphonooxy)propyl carbamate (lb), and its process for preparation thereof. The present invention also provides fosamprenavir calcium intermediate, (S)-3- tetrahydrofuranyl-N-succinimidyl carbonate (Ila) substantially free of (R)-3- tetrahydrofuranylsuccinimidyl carbonate (lib) and its process for preparation thereof.
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Inventors:
ARORA SURINDER KUMAR (IN)
SHABADE SAMIR SHANTESHWAR (IN)
KUMAR GAURAV (IN)
RAY PURNA CHANDRA (IN)
SINGH GIRIJ PAL (IN)
SHABADE SAMIR SHANTESHWAR (IN)
KUMAR GAURAV (IN)
RAY PURNA CHANDRA (IN)
SINGH GIRIJ PAL (IN)
Application Number:
PCT/IB2011/002045
Publication Date:
May 18, 2012
Filing Date:
September 05, 2011
Export Citation:
Assignee:
LUPIN LTD (IN)
ARORA SURINDER KUMAR (IN)
SHABADE SAMIR SHANTESHWAR (IN)
KUMAR GAURAV (IN)
RAY PURNA CHANDRA (IN)
SINGH GIRIJ PAL (IN)
ARORA SURINDER KUMAR (IN)
SHABADE SAMIR SHANTESHWAR (IN)
KUMAR GAURAV (IN)
RAY PURNA CHANDRA (IN)
SINGH GIRIJ PAL (IN)
International Classes:
C07D307/20; C07D405/12
Domestic Patent References:
| WO1994005639A1 | 1994-03-17 |
Other References:
SORBERA, L. A. ET AL.: "FOSAMPRENAVIR", DRUGS OF THE FUTURE, PROUS SCIENCE, ES, vol. 26, no. 3, 1 March 2001 (2001-03-01), pages 224 - 231, XP009001334, ISSN: 0377-8282, DOI: 10.1358/DOF.2001.026.03.615590
MOON KIM B ET AL: "SYNTHESIS OF A CHIRAL AZIRIDINE DERIVATIVE AS A VERSATILE INTERMEDIATE FOR HIV PROTEASE INHIBITORS", ORGANIC LETTERS, AMERICAN CHEMICAL SOCIETY, US, vol. 3, no. 15, 1 January 2001 (2001-01-01), pages 2349 - 2351, XP001179485, ISSN: 1523-7060, DOI: 10.1021/OL016147S
EKHATO I VICTOR ET AL: "Isotope labeled 'HEA/HEE' moiety in the synthesis of labeled HIV-protease inhibitors. Part II", JOURNAL OF LABELLED COMPOUNDS AND RADIOPHARMACEUTICALS, JOHN WILEY, CHICHESTER, GB, vol. 48, no. 3, 1 January 2005 (2005-01-01), pages 179 - 193, XP009112607, ISSN: 0362-4803
MOON KIM B ET AL: "SYNTHESIS OF A CHIRAL AZIRIDINE DERIVATIVE AS A VERSATILE INTERMEDIATE FOR HIV PROTEASE INHIBITORS", ORGANIC LETTERS, AMERICAN CHEMICAL SOCIETY, US, vol. 3, no. 15, 1 January 2001 (2001-01-01), pages 2349 - 2351, XP001179485, ISSN: 1523-7060, DOI: 10.1021/OL016147S
EKHATO I VICTOR ET AL: "Isotope labeled 'HEA/HEE' moiety in the synthesis of labeled HIV-protease inhibitors. Part II", JOURNAL OF LABELLED COMPOUNDS AND RADIOPHARMACEUTICALS, JOHN WILEY, CHICHESTER, GB, vol. 48, no. 3, 1 January 2005 (2005-01-01), pages 179 - 193, XP009112607, ISSN: 0362-4803
Attorney, Agent or Firm:
MAJUMDAR, Subhatosh et al. (Harish Mukherjee Road, Kolkata 5, IN)
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