Synthesis and Evaluation of Polycyclic Pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP Phosphodiesterase Inhibitors
摘要:
Polycyclic pyrazolo[3,4-d]pyrimidines (represented by 3 and 4) were synthesized as analogues of the recently reported polycyclic guanine phosphodiesterase (PDE) inhibitors. From the structure-activity relationship (SAR) development of a series of compounds, it was discovered that C-3 benzyl and N-2 methyl disubstitution on the pyrazole ring gave the best combination of potency and selectivity for PDE1 and PDE5 cGMP PDEs as represented by compound 4c: PDE1, IC50 = 60 nM; PDE3, IC50 = 55 000 nM; PDE5, IC50 = 75 nM. These compounds were also evaluated in vivo and found to be good orally active antihypertensives in laboratory animal models. Finally, comparisons were made of the in vitro and in vivo profiles of the pyrazolo[3,4-d]pyrimidine compound 4c with those of two representative guanine compounds.
Synthesis and Evaluation of Polycyclic Pyrazolo[3,4-d]pyrimidines as PDE1 and PDE5 cGMP Phosphodiesterase Inhibitors
摘要:
Polycyclic pyrazolo[3,4-d]pyrimidines (represented by 3 and 4) were synthesized as analogues of the recently reported polycyclic guanine phosphodiesterase (PDE) inhibitors. From the structure-activity relationship (SAR) development of a series of compounds, it was discovered that C-3 benzyl and N-2 methyl disubstitution on the pyrazole ring gave the best combination of potency and selectivity for PDE1 and PDE5 cGMP PDEs as represented by compound 4c: PDE1, IC50 = 60 nM; PDE3, IC50 = 55 000 nM; PDE5, IC50 = 75 nM. These compounds were also evaluated in vivo and found to be good orally active antihypertensives in laboratory animal models. Finally, comparisons were made of the in vitro and in vivo profiles of the pyrazolo[3,4-d]pyrimidine compound 4c with those of two representative guanine compounds.
[EN] KAT II INHIBITORS<br/>[FR] INHIBITEUR DE KAT II
申请人:PFIZER
公开号:WO2012073143A1
公开(公告)日:2012-06-07
Compounds of Formula I: (I) wherein X, Y, Z, R 1, R 2, R 3, R 4 are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive 5 deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.
[EN] PROGRAMMED CELL NECROSIS INHIBITOR, PREPARATION METHOD THEREFOR, AND USE THEREOF<br/>[FR] INHIBITEUR DE NÉCROSE CELLULAIRE PROGRAMMÉE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 一类细胞程序性坏死抑制剂及其制备方法和用途
Compounds of Formula I:
wherein X, Y, Z, R
1
, R
2
, R
3
, R
4
are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.
Compounds of Formula I:
wherein X, Y, Z, R1, R2, R3, R4 are as defined herein, and pharmaceutically acceptable salts thereof, are described as useful for the treatment of cognitive deficits associated with schizophrenia and other psychiatric, neurodegenerative and/or neurological disorders in mammals, including humans.