Patent · US Expired

Hydrazono derivatives of cephalosporins

US4178444A · kind A · utility

1Cited by

2References

5Claims

0Family size

Assignee

C R A F Sud · IT

Inventors

Riccardo Monguzzi · Dorio, IT
Giorgio Pifferi · Milano, IT
Mario Pinza · Corsico, IT
Giampietro Broccali · Milano, IT

Key dates

Filing date	Jun 7, 1978
Grant date	Dec 11, 1979
Priority date	—
Expiry date	Jun 7, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C251/72
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Hydrazono derivatives of cephalosporins of the formula ##STR1## wherein R is phenyl optionally substituted, 2- or 3-thienyl optionally substituted, or 2- or 3-furyl optionally substituted, R.sub.1 is hydrogen or alkyl having from 1 to 4 carbon atoms, and R.sub.2 is hydrogen, acetoxy, carbamoyloxy or a heterocyclic nucleus preferably bounded through a sulphur atom to the methylene group. The compounds have bactericidal activity. Methods of preparation are also disclosed.

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