Patent · US Expired

Process for the preparation of vinyl-pyrrolidinone cephalosporin derivatives

US6504025B2 · kind B2 · utility

7Cited by
2References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 17, 2001
Grant dateJan 7, 2003
Priority date—
Expiry dateMay 17, 2021

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/582
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Disclosed is a process for the preparation of vinyl-pyrrolidinone cephalosporine derivatives of formula Also disclosed are intermediate compounds of formulas wherein R1 and R2 are as defined herein.

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