Synthesis, Structure, and Antimalarial Activity of Some Enantiomerically Pure,<i>cis</i>-fused cyclopenteno-1,2,4-trioxanes
作者:Charles W. Jefford、Shigeo Kohmoto、Danielle Jaggi、Géza Timári、Jean-Claude Rossier、Manyck Rudaz、Olivier Barbuzzi、David Gérard、Ulrich Burger、Philippe Kamalaprija、Jiri Mareda、Gérald Bernardinelli、Ignacio Manzanares、Craig J. Canfield、Suzanne L. Feck、Brain L. Robinson、Wallace Peters
DOI:10.1002/hlca.19950780312
日期:1995.5.10
corresponding alcohols, and conversion to the (1S)-camphanates (Scheme 4), the structures of which are determined by X-ray analysis. The dynamic properties of ent-7 are investigated by NMR spectroscopy and PM3 calculations. Evidence for an easily accessible twist-boat conformation is obtained. The in vitro and in vivo antimalarial activities of 7, ent-7,8, and ent-8 as well as those of the racemic mixtures are
制备了两对对映体纯的顺式稠合的环戊烯-1,2,4-三恶烷(7,ent - 7和8,ent - 8)(方案1-3)。它们的身份是通过对ent - 7和8,ent - 8进行烯丙基氢过氧化物的染料敏化光氧化,还原为相应的醇并转化为(1 S)-樟脑酸酯(方案4)而建立的(方案4)通过X射线分析确定。ent的动态属性-通过NMR光谱和PM3计算研究了图7。获得了易于操作的扭艇构型的证据。在体外和体内的抗疟疾活性7,耳鼻喉科- 7,8,和ENT - 8以及那些外消旋混合物的对被评价恶性疟原虫,柏氏疟原虫,和约氏疟原虫。在配置和活动之间未发现相关性。外消旋体和纯对映体具有相称的活性。通过在血红素分子表面上的三恶烷的旋舟构象异构体紧密对接,单电子转移到OOσ*轨道以及分裂到乙缩醛自由基,使对红细胞内寄生虫的作用方式合理化然后其不可逆地异构化为以C为中心的自由基,即最终的致死剂(方案5)。