An efficient domino strategy for synthesis of novel spirocycloalkane fused pyrazolo[3,4-b]pyridine derivatives
作者:Chunmei Li、Furen Zhang、Zhenlu Shen
DOI:10.1016/j.tet.2020.131727
日期:2020.12
has been established for the synthesis of novel spirocycloalkane fused pyrazolo[3,4-b]pyridine-dicarbonitrile derivatives in 73–90% yields. The domino reaction is easy to perform by mixing 1H-pyrazol-5-amines or isoxazol-5-amine, 2-arylidenemalononitriles, and cyclic ketones in the presence of acetic acid at 80 °C in 2–4 h. The present procedure shows attractive properties including inexpensive and easy
已经建立了一种由乙酸促进的简洁高效的多组分多米诺骨牌策略,用于合成新型螺环烷烃稠合的吡唑并[3,4- b ]吡啶-二甲腈衍生物,产率为73-90%。在80°C的乙酸中,在2-4小时内,将1 H-吡唑-5-胺或异恶唑-5-胺,2-芳基丙二腈和环状酮混合,即可轻松进行多米诺反应。本方法显示出有吸引力的性质,包括廉价且容易的起始原料,简单的一锅操作,大的底物范围,高分离产率和容易的纯化过程。这种化学提供了一个有前途的合成策略,以建设ñ含具有手性中心螺环骨架。
Pyrazoloquinolones are potent PARP inhibitors
申请人:Penning Thomas D.
公开号:US08546368B2
公开(公告)日:2013-10-01
Compounds of Formula (I)
inhibit the PARP enzyme and are useful for treating a disease or a disorder associated with PARP. Also disclosed are pharmaceutical compositions comprising compounds of Formula (I), methods of treatment comprising compounds of Formula (I), and methods of inhibiting the PARP enzyme comprising compounds of Formula (I).
Compounds of Formula (I) inhibit the PARP enzyme and are useful for treating a disease or a disorder associated with PARP. Also disclosed are pharmaceutical compositions comprising compounds of Formula (I), methods of treatment comprising compounds of Formula (I), and methods of inhibiting the PARP enzyme comprising compounds of Formula (I).
A simple and efficient procedure for the synthesis of pyrazoloisoquinoline and pyrazolopyridine derivatives by one-pot three-component condensation of aminopyrazoles, aldehydes, and cycloketones in water using carbonaceous material as solid acid catalyst is described. The procedure offers several advantages such as simple experimental and work-up procedures, high yield, recovery, and reusability of metal-free solid acid heterogeneous catalyst along with tolerance of a wide range of functional groups. (C) 2015 Elsevier Ltd. All rights reserved.