A PROCESS FOR THE PREPARATION OF ZALEPLON
Application 1252/MUM/2004 published 2006-06-09, filed 2004-11-22
The present invention relates to a novel and commercially feasible process for the preparation of pyrazolo [1.5-.@S\ULPLGLQHFRPSRXQG]DOHSORQZKHUHLQDQRYHOLQWHUPHGLDWHZ-(3-bromophenyl)-3,7—dihydropyrazolo[1.5-.@S\ULPLGLQH-3-carbonitrile is coupled with acetamide to yield a N-[3-(3-cyanopyrazolo [1.5-.@S\ULPLGLQ-7-yl)phenyl] acetamide which on ethylation gives zaleplon. Drawing Sheets: NIL Total Pages: 24. Fig. Nil
Applicant
CADILA PHARMACEUTICALS LTD.
CADILA CORPORATE CAMPUS, SARKHEJ-DHOLKA ROAD, BHAT, AHMEDABAD-382210, GUJARAT, INDIA.
Inventor
1. MR.INDRAVADAN AMBALAL MODI 2. DR.MANISH CHANDRAKANT SHUKLA 3. MR.VALA VALA SRINIVAS 4. DR.NIRAV KESHAVLAL KAGATHARA 5. MR.NILESH MANJIBHAI JAMARIA 6. MR.SURYABHAN PRABHAKAR DANGE 7. DR.J.VENKAT RAMAN 8. DR.BAKULESH MAFATLAL KHAMAR
International Info
Classification: A61K 9/00