Synthesis Toward and Stereochemical Assignment of Clathsterol: Exploring Diverse Strategies to Polyoxygenated Sterols
作者:Tao Zhou、Feng Feng、Yong Shi、Wei-Sheng Tian
DOI:10.1021/acs.orglett.6b01029
日期:2016.5.6
Herein we describe a synthesis of the trisulfate derivative of clathsterol (1), a marine sterol endowed with impressive structural features and moderate inhibitory activity against HIV-1 reverse transcriptase. By synthesizing two possible isomers of the side chain, the stereochemistry of 1 is assigned. In creating chiral side chains from steroidal lactone, our strategies, including an addition/reduction
在这里,我们描述了笼固醇(1)的三硫酸盐衍生物的合成,该固醇是一种海洋甾醇,具有令人印象深刻的结构特征和对HIV-1逆转录酶的适度抑制活性。通过合成侧链的两个可能的异构体,分配了1的立体化学。从甾体内酯生成手性侧链时,我们的策略包括加成/还原生成C22 R –OH的步骤,环氧化物开放反应和[3.3]重排以诱导C24 S -Et和C24 R的生成-Et分别具有高度的灵活性和互补性。