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1. (WO2007080470) A METHOD FOR THE PURIFICATION OF LEVETIRACETAM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2007/080470 International Application No.: PCT/IB2007/000029
Publication Date: 19.07.2007 International Filing Date: 08.01.2007
Chapter 2 Demand Filed: 28.11.2007
IPC:
C07D 207/26 (2006.01)
Applicants: RAO, Siripragada, Mahender[IN/IN]; IN (UsOnly)
THIRUMURUGAN, Kunchithapatham[IN/IN]; IN (UsOnly)
NAIDU, Kundrappu, Chinnam[IN/IN]; IN (UsOnly)
ORCHID CHEMICALS & PHARMACEUTICALS LIMITED[IN/IN]; Orchid Towers, 313, Valluvar Kottam High Road, Nungambakkam Chennai, Tamil Nadu 600 034, IN (AllExceptUS)
Inventors: RAO, Siripragada, Mahender; IN
THIRUMURUGAN, Kunchithapatham; IN
NAIDU, Kundrappu, Chinnam; IN
Agent: HARIHARAN, Rajeshwari; K & S PARTNERS 84-c, C-6 Lane, Off Central Avenue Sainik Farms New Delhi 110 062, IN
Priority Data:
60/CHE/200616.01.2006IN
Title (EN) A METHOD FOR THE PURIFICATION OF LEVETIRACETAM
(FR) PROCEDE DE PURIFICATION DE LEVETIRACETAME
Abstract:
(EN) The present invention relates to an improved process for the preparation of Levetiracetam of formula (I). More particularly, the present invention relates to a method for the purification of crude Levetiracetam using a solvent mixture of ethyl acetate and water.(I).
(FR) Procédé amélioré pour la préparation de lévétiracétame de formule (I), et plus précisément procédé de purification de lévétiracétame brut reposant sur l'utilisation d'un mélange solvant d'acétate d'éthyle et d'eau.(I).
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, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (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)