[EN] PYRAZOLO[3,4-b]PYRIDINE COMPOUNDS, AND THEIR USE AS PDE4 INHIBITORS<br/>[FR] COMPOSES DE PYRAZOLO[3,4-b]PYRIDINE ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE PDE4
申请人:GLAXO GROUP LTD
公开号:WO2005090353A1
公开(公告)日:2005-09-29
The invention relates to a compound of formula (I) or a salt thereof: formula (I) wherein: R1 is Et, n-Pr, i-Pr, C2fluoroalkyl, or -CH2CH2OH; R2 is H, Me, Et, n-Pr, i-Pr, C1-2fluoroalkyl, cyclopropyl or (cyclopropyl)methyl-; and NHR3 has the sub-formula (nhr3): formula (nhr3) wherein R3a is methyl or ethyl; R3b is H, methyl or ethyl; R3c is H, methyl or ethyl, R3d is H, methyl or ethyl, and R3e is H or methyl, provided that: (a) R3b is methyl or ethyl; and/or (b) R3c and R3d are independently methyl or ethyl; and provided that: (c) when R3c is ethyl and/or when R3d is ethyl and/or when R3e is methyl, then: R3a is methyl and/or R3b is a hydrogen atom (H) or methyl. NHR3 can for example be [(1S)-1,2-dimethylpropyl]amino or t-butylamino. The invention also relates to the use of these pyrazolo[3,4 b]pyridine compounds in therapy, as inhibitors of phosphodiesterase type IV (PDE4), and relates to their use in the treatment and/or prophylaxis of inflammatory and/or allergic diseases such as chronic obstructive pulmonary disease (COPD), asthma, rheumatoid arthritis or allergic rhinitis.
该发明涉及公式(I)的化合物或其盐:公式(I)其中:R1为Et、n-Pr、i-Pr、C2氟烷基或-CH2CH2OH;R2为H、Me、Et、n-Pr、i-Pr、C1-2氟烷基、环丙基或(环丙基)甲基-;NHR3具有亚公式(nhr3):公式(nhr3)其中R3a为甲基或乙基;R3b为H、甲基或乙基;R3c为H、甲基或乙基,R3d为H、甲基或乙基,R3e为H或甲基,条件是:(a)R3b为甲基或乙基;和/或(b)R3c和R3d独立为甲基或乙基;并且条件是:(c)当R3c为乙基和/或当R3d为乙基和/或当R3e为甲基时,则:R3a为甲基和/或R3b为氢原子(H)或甲基。NHR3可以例如是[(1S)-1,2-二甲基丙基]氨基或叔丁基氨基。该发明还涉及将这些吡唑并[3,4 b]吡啶化合物用于治疗,作为磷酸二酯酶IV(PDE4)的抑制剂,并涉及它们在治疗和/或预防炎症和/或过敏疾病如慢性阻塞性肺病(COPD)、哮喘、类风湿性关节炎或过敏性鼻炎中的用途。