EP 0898564 A1 19990303 - METHOD OF PREPARING PHOSPHODIESTERASE IV INHIBITORS
Title (en)
METHOD OF PREPARING PHOSPHODIESTERASE IV INHIBITORS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PHOSPHORODIESTERASE-IV-HEMMERN
Title (fr)
PROCEDE DE PREPARATION D'INHIBITEURS DE PHOSPHODIESTERASE IV
Publication
Application
Priority
- GB 9612083 A 19960610
- US 9706131 W 19970414
- US 1568796 P 19960417
Abstract (en)
[origin: WO9738976A1] A process for the preparation of a compound of structural formula (1) wherein R<1> is alkyl, alkenyl, phenyl or substituted phenyl, which comprises the addition of R<1> to an intermediate 2: by treatment of 2 with (R<1>)3M followed by reductive removal of the sulfinyl group.
IPC 1-7
IPC 8 full level
C07D 213/34 (2006.01)
CPC (source: EP)
A61P 11/06 (2017.12); C07D 213/34 (2013.01)
Citation (search report)
See references of WO 9738976A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9738976 A1 19971023; AR 006550 A1 19990908; AU 2459297 A 19971107; BR 9708684 A 19990803; CN 1216532 A 19990512; CZ 333298 A3 19990317; EA 000877 B1 20000626; EA 199800931 A1 19990429; EP 0898564 A1 19990303; SK 143198 A3 19990611; TW 426669 B 20010321
DOCDB simple family (application)
US 9706131 W 19970414; AR P970101372 A 19970407; AU 2459297 A 19970414; BR 9708684 A 19970414; CN 97193932 A 19970414; CZ 333298 A 19970414; EA 199800931 A 19970414; EP 97920379 A 19970414; SK 143198 A 19970414; TW 86104869 A 19970415