EP 1036088 A1 20000920 - METHOD OF PREPARING 16 ALPHA,17 ALPHA-DIALKYLATED STEROIDS
Title (en)
METHOD OF PREPARING 16 ALPHA,17 ALPHA-DIALKYLATED STEROIDS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 16ALPHA,17ALPHA-DIALKYLIERTEN STEROIDE
Title (fr)
PROCEDE PERMETTANT DE PREPARER DES STEROIDES 16 ALPHA,17 ALPHA-DIALKYLES
Publication
Application
Priority
- US 9823641 W 19981105
- US 6714897 P 19971202
Abstract (en)
[origin: WO9928336A1] 16 alpha ,17 alpha -Dialkylated steroids are prepared by reacting a 16 alpha -alkyl-17(20)-enyl-20-silyl ether with an alkylating agent and an enol silyl ether cleaving agent in a suitable solvent.
IPC 1-7
IPC 8 full level
C07J 5/00 (2006.01); C07J 13/00 (2006.01); C07J 51/00 (2006.01); C07J 71/00 (2006.01); C07J 75/00 (2006.01)
CPC (source: EP)
C07J 13/005 (2013.01); C07J 13/007 (2013.01); C07J 51/00 (2013.01)
Citation (search report)
See references of WO 9928336A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9928336 A1 19990610; AR 017423 A1 20010905; AU 1311599 A 19990616; AU 737219 B2 20010809; BR 9814717 A 20001003; CA 2299396 A1 19990610; EP 1036088 A1 20000920; JP 2001525333 A 20011211
DOCDB simple family (application)
US 9823641 W 19981105; AR P980106107 A 19981202; AU 1311599 A 19981105; BR 9814717 A 19981105; CA 2299396 A 19981105; EP 98956638 A 19981105; JP 2000523227 A 19981105