Patent · US Expired

Penicillin derivatives

US4235774A · kind A · utility

5Cited by

4References

11Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Michael Preiss · Leinfelden, DE
Hans-Bodo Konig
Karl G. Metzger · Wuppertal, DE
Gunter Schmidt · Houghton, US

Key dates

Filing date	Feb 12, 1979
Grant date	Nov 25, 1980
Priority date	—
Expiry date	Feb 12, 1999

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P31/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

New penicillin derivatives, or esters or salts thereof, of the formula ##STR1## in which R is H or alkoxy, PA1 B is a heterocyclic radical, PA1 A is an ethylene, trimethylene or o-phenylene radical, PA1 D is --co-- or a direct bond, and PA1 Z is a hydrogen atom, an optionally substituted alkyl or alkenyl group, an optionally substituted cycloalkyl, cycloalkenyl or cycloalkadienyl group, an optionally substituted aryl group, an optionally substituted hetercyclyl group or an acyl radical.

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