Antineoplastic Agents 440. Asymmetric Synthesis and Evaluation of the Combretastatin A-1 SAR Probes (1<i>S</i>,2<i>S</i>)- and (1<i>R</i>,2<i>R</i>)-1,2-Dihydroxy- 1-(2‘,3‘-dihydroxy-4‘-methoxyphenyl)-2-(3‘ ‘,4‘ ‘,5‘ ‘-trimethoxyphenyl)-ethane
作者:George R. Pettit、John W. Lippert、Delbert L. Herald、Ernest Hamel、Robin K. Pettit
DOI:10.1021/np0000623
日期:2000.7.1
combretastatin A-1 (1a) isolated from the African bushwillow Combretum caffrum was the focus of chiral hydroxylation (Sharpless) reactions as part of a structure-activity relationship study. The resulting (R,R)- and (S,S, )-diols (6 and 7) and synthetic intermediates were evaluated against a series of cancer cell lines, microorganisms, and tubulin. Chiral diols 6 and 7 showed increased activity against the P-388
从非洲灌木柳Combrtum牛aff中分离得到的天然康维他汀A-1(1a)的合成(E)-异构体(3b)是手性羟基化(Sharpless)反应的重点,是结构-活性关系研究的一部分。针对一系列癌细胞系,微生物和微管蛋白评估了生成的(R,R)-和(S,S,)-二醇(6和7)和合成中间体。与前体(E)-二苯乙烯3b相比,手性二醇6和7对P-388鼠淋巴细胞性白血病细胞系的ED(50)值分别为3.9和2.9 microg / mL,活性增强。相反,(E)-二苯乙烯3b表现出比手性二醇更强的抗生素活性(6和7)。(R,R)-6和(S,S)-7两个二醇