Patent · US Expired

18-Methyl-19-nor-20-ketopregnanes and process for the preparation thereof

US4029777A · kind A · utility

25Cited by

2References

18Claims

0Family size

Assignee

SCHERING CORPORATION · US

Inventors

Otto Engelfried
Ulrich Kerb
Rudolf Wiechert · Berlin, DE
Helmut Wachtel · Berlin, DE
Dieter Palenschat
Reinhard Horowski
Gert Paschelke
Wolfgang Kehr

Key dates

Filing date	Aug 5, 1975
Grant date	Jun 14, 1977
Priority date	—
Expiry date	Aug 5, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07J7/002
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

18-Methyl-19-nor-20-keto steroids of the formula ##STR1## wherein R.sub.1 and R.sub.2 collectively are an oxygen atom, or each is hydrogen, or one of R.sub.1 and R.sub.2 is hydrogen and the other is hydroxy, and R.sub.3 is a ketonic oxygen atom or two hydrogen atoms, possess CNS-depressant activity, especially anesthetic-narcotic activity.

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