Patent · US Expired

Steroids including a spiro ring in position 17, the process for their preparation and their use

US4900725A · kind A · utility

22Cited by
3References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 25, 1987
Grant dateFeb 13, 1990
Priority date
Expiry dateNov 25, 2007

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07J41/0083
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

##STR1## Products having the formula (I) wherein R.sub.1 is an aryl or aralkyl, R.sub.2 is a hydrocarbonated radical (1-18 carbon atoms), the dotted lines indicate an optional bond, the cycles A, B and C represent (II), (III), (IV), (V), (VI); R' and R" are H, alkyl (1-4 carbon atoms). Re is H, alkyl (1-6 carbon atoms), acyl, and their salts, their preparation, their application as medicaments, the pharmaceutical compositions containing them and intermediaries.

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