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1. (WO2017153824) A PROCESS FOR ALKYLATING THE HYDROXYMETHYL GROUP AT POSITION -3 OF CEPHALOSPORINS
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Pub. No.: WO/2017/153824 International Application No.: PCT/IB2016/056860
Publication Date: 14.09.2017 International Filing Date: 15.11.2016
Chapter 2 Demand Filed: 13.12.2017
IPC:
C07D 501/04 (2006.01) ,C07D 501/16 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
501
Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
02
Preparation
04
from compounds already containing the ring or condensed ring systems, e.g. by dehydrogenation of the ring, by introduction, elimination or modification of substituents
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
501
Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
14
Compounds having a nitrogen atom directly attached in position 7
16
with a double bond between positions 2 and 3
Applicants:
DHANUKA LABORATORIES LTD. [IN/IN]; 82, Abhinash Mansion, Ist Floor, Joshi Road, Karol Bagh, New Delhi 110005, IN
Inventors:
SINGH, Sandeep; IN
SRIVASTAVA, Alok; IN
DHANUKA, Manish; IN
Agent:
PANDEY, Shachindra Kumar; IN
SRIHARI, Saragur, Kasturirangan; IN
SOOD, Mayank; IN
TIWARI, Amrish; IN
CHADHA, Namrata; IN
CHAWLA, Himanshu; IN
Priority Data:
20161100785307.03.2016IN
Title (EN) A PROCESS FOR ALKYLATING THE HYDROXYMETHYL GROUP AT POSITION -3 OF CEPHALOSPORINS
(FR) PROCÉDÉ D'ALKYLATION DU GROUPE HYDROXYMÉTHYLE EN POSITION -3 DES CÉPHALOSPORINES
Abstract:
(EN) A process for alkylating the hydroxymethyl group at position -3 of 7-Amino-3- hydroxymethyl-3-cephem-4-carboxylic acid (D-7-ACA) using an alkylating agent, strong acid and a suitable solvent(s).
(FR) L'invention concerne un procédé d'alkylation du groupe hydroxyméthyle en position -3 de l'acide 7-amino-3-hydroxyméthyl-3-céphem-4-carboxylique (D-7-ACA) à l'aide d'un agent d'alkylation, d'un acide fort et d'au moins un solvant approprié.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)