Regioselective N-alkylation of 1,3-azoles is a valuable transformation. Organomagnesium reagents were discovered to be competent bases to affect regioselective alkylation of various 1,3-azoles. Counterintuitively, substitution selectively occurred at the more sterically hindered nitrogen atom. Numerous examples are provided, on varying 1,3-azole scaffolds, with yields ranging from 25 to 95%.
Iodine-catalyzed oxidative functionalization of purines with (thio)ethers or methylarenes for the synthesis of purin-8-one analogues
作者:Juanping Zhuge、Ziyang Jiang、Wei Jiang、Gary Histand、Dongen Lin
DOI:10.1039/d1ob00118c
日期:——
An efficient oxidative functionalization of purine-like substrates with (thio)ethers or methylarenes under mild conditions is described. Using I2 as the catalyst, and TBHP as the oxidant, this protocol provides a valuable synthetic tool for the assembly of a wide range of 9-alkyl(benzyl)purin-8-one derivatives with high atom- and step-economy and exceptional functional group tolerance.
描述了在温和条件下用(硫)醚或甲基芳烃对嘌呤样底物进行有效的氧化功能化。该协议使用 I 2作为催化剂,TBHP 作为氧化剂,为组装各种具有高原子经济性和阶梯经济性的 9-烷基(苄基)purin-8-one 衍生物提供了一种有价值的合成工具。官能团耐受性。
AKT AND P70 S6 KINASE INHIBITORS
申请人:Shepherd Timothy Alan
公开号:US20100120801A1
公开(公告)日:2010-05-13
The present invention provides AKT and p70 S6 kinase inhibitors of the formula:
The present invention also provides pharmaceutical compositions comprising compounds of Formula I, uses of compounds of Formula I and methods of using compounds of Formula I.
A general procedure has been developed for the preparetion of 9-alkylated adenines by the Mitsunobu reaction between 6-chloropurine and several alcohols, followed by the replacement of the chlorine with ammonia. A lesser amount of the 7-alkylpurines was also obtained, irrespective of the alcohol used.