Patent · US Expired

2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones, process for their production & pharmaceutical preparations containing them

US4868166A · kind A · utility

3Cited by

2References

7Claims

0Family size

Assignee

SCHERING CORPORATION · US

Inventors

Dieter Bittler · Berlin, DE
Klaus Nickisch · Berlin, DE
Henry Laurent
Rudolf Wiechert · Berlin, DE
Martin Haberey · Berlin, DE

Key dates

Filing date	Feb 5, 1988
Grant date	Sep 19, 1989
Priority date	—
Expiry date	Feb 5, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07J53/008
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

2,2;6,6-diethylene-3-oxo-17alpha-pregn-4-ene-21,17-carbolactones of general formula I, ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group, PA1 R.sub.2 represents a methyl or ethyl group and ##STR2## process for their production and their pharmaceutical use.

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