作者:Masayoshi Tsubuki、Sohichiro Matsuo、Toshio Honda
DOI:10.1016/j.tetlet.2007.11.087
日期:2008.1
OSW-1 and its analogues in which thiophene ring was introduced at the side chain were synthesized employing Wittig rearrangement of 17E(20)-ethylidene-16α-(4′-methyl-2′-thienyl)methyloxy steroid. The synthesis required nine steps from the known 17E(20)-ethylidene-16α-hydroxy steroid in 15.6% overall yield.
使用17 E(20)-亚乙基-16α-(4'-甲基-2'-噻吩基)甲氧基甾族化合物的维蒂希重排合成了OSW-1及其类似物,在噻吩环的侧链上引入了噻吩环。从已知的17 E(20)-亚乙基-16α-羟基甾类化合物合成需要9个步骤,总产率为15.6%。