Pyrazolo[3,4-b] pyridine compounds, and their use as phosphodiesterase inhibitors
申请人:Allen George David
公开号:US20060089375A1
公开(公告)日:2006-04-27
The invention relates to a compound of formula (I) or a salt thereof:
wherein:
R
1
is C
1-4
alkyl, C
1-3
fluoroalkyl, —CH
2
CH
2
OH or —CH
2
CH
2
CO
2
C
1-2
alkyl;
R
2
is a hydrogen atom (H), methyl or C
1
fluoroalkyl;
R
3
is optionally substituted C
3-8
cycloalkyl or optionally substituted mono-unsaturated-C
5-7
cycloalkenyl or an optionally substituted heterocyclic group of sub-formula (aa), (bb) or (cc);
in which n
1
and n
2
independently are 1 or 2; and in which Y is O, S, SO
2
, or NR
10
;
or R
3
is a bicyclic group (dd) or (ee):
and wherein X is NR
4
R
5
or OR
5a
. The compounds are phosphodiesterase (PDE) inhibitors, in particular PDE4 inhibitors. Also provided is the use of a compound of formula (I), or a pharmaceutically acceptable salt thereof, in the manufacture of a medicament for the treatment and/or prophylaxis of an inflammatory and/or allergic disease in a mammal such as a human, for example chronic obstructive pulmonary disease (COPD), asthma, or allergic rhinitis.
本发明涉及一种化合物或其盐,其化学式为(I):其中:R1为C1-4烷基,C1-3氟烷基,-CH2CH2OH或-CH2CH2CO2C1-2烷基;R2为氢原子(H),甲基或C1氟烷基;R3为可选取代的C3-8环烷基或可选取代的单不饱和C5-7环烯基或亚式(aa),(bb)或(cc)的可选取代的杂环基;其中n1和n2独立地为1或2;且其中Y为O,S,SO2或NR10;或者R3为双环基(dd)或(ee):其中X为NR4R5或OR5a。该化合物为磷酸二酯酶(PDE)抑制剂,特别是PDE4抑制剂。本发明还提供了使用化合物(I)或其药学上可接受的盐制造药物,用于治疗和/或预防哺乳动物(例如人类)的炎症和/或过敏性疾病,例如慢性阻塞性肺疾病(COPD),哮喘或过敏性鼻炎。