Patent · US Expired

Process for the production of ergoline derivatives

US5371000A · kind A · utility

1Cited by

0References

3Claims

0Family size

Assignee

SCHERING CORPORATION · US

Inventors

Heidi Hummel-Maquardt · Berlin, DE
Mario Kennecke · Berlin, DE
Alfred Weber · Wien, AT
Klaus Nickisch · Berlin, DE
Gregor Haffer · Berlin, DE

Key dates

Filing date	Oct 7, 1992
Grant date	Dec 6, 1994
Priority date	—
Expiry date	Oct 7, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S435/886
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the production of ergoline derivatives of general formula I is described ##STR1## in which the bonds represent two single-bonds or a double bond and a single bond. R.sub.1 means a hydrogen atom or an alkyl group with 1-6 carbon atoms R.sub.2 symbolizes a hydrogen atom or an alkyl group with 1-6 carbon atoms, R.sub.3 represents a carboxyl group or a grouping of formula EQU --CONR.sub.4 R.sub.5 or --NHCQNR.sub.6 R.sub.7 with R.sub.4 and R.sub.5 meaning hydrogen or an alkyl radical with 1-6 carbons atoms optionally substituted by a hydroxy group and R.sub.6 and R.sub.7 meaning an alkyl group containing 1-4 carbon atoms and Q meaning an oxygen or sulfur atom.

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