Patent · US Expired

Cephalosporin intermediates

US6787649B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Sandoz AG · CH

Inventors

Peter Kremminger · Kufstein, AT
Johannes Ludescher · Feldbach, AT
Siegfried Wolf · Brixlegg, AT

Key dates

Filing date	Feb 12, 2003
Grant date	Sep 7, 2004
Priority date	—
Expiry date	Feb 12, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D277/46
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process which comprises(i) acylating a compound of formula II with a compound of formula IV to obtain a compound of formula I and(ii) deformylating said compound of formula I to obtain a compound of formula III

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.