Solid-phase synthesis of N-9-substituted 2,8-diaminopurines
摘要:
A general and efficient solid-phase synthesis of N-9-substituted 2,8-diaminopurines from 5-nitrouracil is described. The key synthetic transformation employs a carbodiimide-mediated cyclization of a thiourea. Thiourea formation on solid phase is performed using both thermal and microwave reaction conditions. Regiospecific solution-phase synthesis of key building blocks allows the incorporation of desired substituents at N-9 of the purine nucleus. (c) 2006 Elsevier Ltd. All rights reserved.
HETEROARYL IMIDAZOLONE DERIVATIVES AS JAK INHIBITORS
申请人:Eastwood Paul Robert
公开号:US20130089512A1
公开(公告)日:2013-04-11
New heteroaryl imidazolone derivatives having the chemical structure of formula (I) are disclosed, as well as processes for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Janus Kinases (JAK).
Pin1 might be a novel strategy for developing anticancer agents. Herein, a series of pyrimidine derivatives were synthesized and their Pin1 inhibitory activities were evaluated. Among them, four compounds (2a, 2f, 2h and 2l) displayed potent inhibitory activities against Pin1 with IC50 values lower than 3 µM. This series of pyrimidine-based inhibitors presented time-dependent inhibition against Pin1
Solid-phase synthesis of N-9-substituted 2,8-diaminopurines
作者:Andrew G. Cole、Axel Metzger、Gulzar Ahmed、Marc-Raleigh Brescia、Ray J. Chan、James Wen、Linda O’Brien、Lan-Ying Qin、Ian Henderson
DOI:10.1016/j.tetlet.2006.10.050
日期:2006.12
A general and efficient solid-phase synthesis of N-9-substituted 2,8-diaminopurines from 5-nitrouracil is described. The key synthetic transformation employs a carbodiimide-mediated cyclization of a thiourea. Thiourea formation on solid phase is performed using both thermal and microwave reaction conditions. Regiospecific solution-phase synthesis of key building blocks allows the incorporation of desired substituents at N-9 of the purine nucleus. (c) 2006 Elsevier Ltd. All rights reserved.