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Machine translation
1. (WO2007077570) PROCESS FOR OBTAINING PURE OSELTAMIVIR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/077570    International Application No.:    PCT/IN2006/000001
Publication Date: 12.07.2007 International Filing Date: 02.01.2006
IPC:
C07C 231/22 (2006.01)
Applicants: HETERO DRUGS LIMITED [IN/IN]; Hetero House, 8-3-166/7/1, Erragadda, Hyderabad 500 018, Andhrapradesh (IN) (For All Designated States Except US).
PARTHASARADHI, Reddy, Bandi [IN/IN]; (IN) (For US Only).
RATHNAKAR, Reddy, Kura [IN/IN]; (IN) (For US Only).
RAJI, Reddy, Rapolu [IN/IN]; (IN) (For US Only).
MURALIDHARA, Reddy, Dasari [IN/IN]; (IN) (For US Only).
SUBASH CHANDER REDDY, Kesireddy [IN/IN]; (IN) (For US Only)
Inventors: PARTHASARADHI, Reddy, Bandi; (IN).
RATHNAKAR, Reddy, Kura; (IN).
RAJI, Reddy, Rapolu; (IN).
MURALIDHARA, Reddy, Dasari; (IN).
SUBASH CHANDER REDDY, Kesireddy; (IN)
Priority Data:
Title (EN) PROCESS FOR OBTAINING PURE OSELTAMIVIR
(FR) PROCEDE D’OBTENTION D’OSELTAMIVIR PUR
Abstract: front page image
(EN)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 defined crystalline form. The present invention also provides a process for preparation of oseltamivir phosphate in high purity.
(FR)La présente invention concerne un procédé destiné à obtenir la forme cristalline de haute pureté de la base libre de l’oséltamivir. Par exemple, selon le procédé, la base libre de l’oséltamivir impure ou non cristalline est dissoute ou mise en suspension dans un solvant hydrocarboné, puis les cristaux sont isolés pour obtenir la base libre de l’oséltamivir sous une forme cristalline bien définie. L’invention concerne également un procédé de préparation de phosphate d’oséltamivir de pureté élevée.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)