Patent · US Expired

14.alpha., 16.alpha.-ethanoand 14.alpha., 16.alpha.-etheno-estratrienes

US5439902A · kind A · utility

0Cited by

2References

7Claims

0Family size

Assignee

SCHERING CORPORATION · US

Inventors

Henry Laurent
Peter Esperling · Berlin, DE
Walter Elger · Berlin, DE
Rolf Krattenmacher · Berlin, DE

Key dates

Filing date	Mar 18, 1994
Grant date	Aug 8, 1995
Priority date	—
Expiry date	Mar 18, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07J53/002
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The new 14.alpha.,16.alpha.-ethano- and 14.alpha.,16.alpha.-etheno-estratrienes of general formula I, ##STR1## are described, in which A-B means a C-C single bond or C-C double bond, PA1 R.sub.1 means a hydrogen atom, a methyl or acyl group with 1-12 carbon atoms and PA1 X means oxygen or ##STR2## in which R.sub.2 represents a hydrogen atom or an acyl group with 1-12 carbon atoms, and a process for their production. The new compounds are very strong estrogens and are suitable for the production of pharmaceutical agents.

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