Patent · US Expired

Steroid esters preparation

US4181669A · kind A · utility

6Cited by

1References

25Claims

0Family size

Assignee

Leo Corporation

Inventors

Bertil Hansen · Helsingborg, SE
Krister Holmberg · Mölndal, SE

Key dates

Filing date	Dec 21, 1977
Grant date	Jan 1, 1980
Priority date	—
Expiry date	Dec 21, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07J41/005
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention relates to an improved steroid ester synthesis in which a carbodiimide, in combination with an acid catalyst, is used as condensing agent.

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