Pyridine-3-carboxylic acid derivatives and their use as intermediates
申请人:PFIZER INC.
公开号:EP1371647A2
公开(公告)日:2003-12-17
The present invention relates to compounds of the formula (X) which are useful in the synthesis of pyrazolopyrimidinone compounds:
wherein:
R13 is C1 to C4 alkyl optionally substituted with one or two substituents selected from OH, C1 to C4 alkoxy, benzyloxy, NR5R6, phenyl, furanyl and pyridinyl; C3 to C6 cycloalkyl; 1-(C1 to C4 alkyl)piperidinyl; tetrahydrofuranyl or tetrahydropyranyl;
R4 is SO2NR7R8;
R5 and R6 are each independently selected from H and C1 to C4 alkyl, or, together with the nitrogen atom to which they are attached, form a pyrrolidinyl, piperidinyl or morpholinyl group;
R7 and R8, together with the nitrogen atom to which they are attached, form a 4-R10 piperazinyl group optionally substituted with one or two C1 to C4 alkyl groups and optionally in the form of its 4-N-oxide;
R10 is H; C1 to C4 alkyl optionally substituted with one or two substituents selected from OH, NR5R6, CONR5R6, phenyl optionally substituted with C1 to C4 alkoxy, benzodioxolyl and benzodioxanyl; C3 to C6 alkenyl; pyridinyl or pyrimidinyl;
or a salt of such compound, or an acid chloride derivative of such compound.
PYRAZOLOPYRIMIDINONE CGMP PDE5 INHIBITORS FOR THE TREATMENT OF SEXUAL DYSFUNCTION
申请人:PFIZER INC.
公开号:EP1073658B1
公开(公告)日:2003-08-13
US6251904B1
申请人:——
公开号:US6251904B1
公开(公告)日:2001-06-26
US6458951B2
申请人:——
公开号:US6458951B2
公开(公告)日:2002-10-01
Pyrazolopyrimidinone cGMP PDE5 inhibitors for the treatment of sexual dysfunction
申请人:Pfizer Inc.
公开号:US06251904B1
公开(公告)日:2001-06-26
Compounds of the formulae (IA) and (IB):
wherein R1 is C1 to C3 alkyl optionally substituted with phenyl, Het or a N-linked heterocyclic group selected from piperidinyl and morpholinyl; wherein said phenyl group is optionally substituted by one or more substitutents selected from C1 to C4 alkoxy; halo; CN; CF3; OCF3 or C1 to C4 alkyl wherein said C1 to C4 alkyl group is optionally substituted by C1 to C4 haloalkyl or haloalkoxy either of which is substituted by one or more halo atoms; R2 is C1 to C6 alkyl and R13 is OR3 or NR5R6, or pharmaceutically or veterinarily acceptable salts thereof, or pharmaceutically or veterinarily acceptable solvates of either entity are potent and selective inhibitors of type 5 cyclic guanosine 3′,5′-monophosphate phosphodiesterase (cGMP PDE5) and have utility in the treatment of, inter alia, male erectile dysfunction (MED) and female sexual dysfunction (FSD).