Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Preparation process for 20-keto 21(S) hydroxy steroids compounds and intermediates

Preparation process for 20-keto 21(S) hydroxy steroids compounds and intermediates

US Patent 5473087 · Granted Dec 5, 1995

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method for the production of 1,4-benzothiepin-1,1-dioxide derivatives2013
CRYSTALLINE FORMS OF 1S-[1ALPHA(2S*,3R*), 9ALPHA]6, 10-DIOXO-N-(2-ETHOXY-5-OXO-T2005
Spherical agglomerates of telithromycin, their preparation process and their use2004
CRYSTALLINE FORMS OF 1S-[1-ALPHA(2S*,3R*), 9ALPHA]6, 10-DIOXO-N-(2-ETHOXY-5-OXO-2003
Process for preparing 16 .alpha.-methyl-steroids2001
Preparation of 4-phenyl-1,2,3,6-tetrahydropyridines2000
Phenylimidazolidine preparation process2000
17, 20-epoxy steroids1999
Hydrated forms of zilpatherol hydrochloride1998
Process for the production of 21-acyloxy-4,9 (11),16-pregnatriene-3,20-diones1998
Intermediates for the preparation of .DELTA..sup.4,9(11),17(20) -pregnatriene-3-1998
Crystallized zilpaterol hydrochloride1998