Patent · US Expired

Preparation of corticoids from 17-keto steroids

US4412955A · kind A · utility

0Cited by
2References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 17, 1982
Grant dateNov 1, 1983
Priority date—
Expiry dateMay 17, 2002

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07J31/006
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Disclosed is a 20,21-dihalo steroid (VII) and a steroidal sulfoxide (VIII) as well as processes to produce them. The 20,21-dihalo steroid (VII) and sulfoxide (VIII) are intermediates useful in the preparation of pharmaceutically useful corticoids.

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