An efficient approach to optically active benzoprostacyclins by a two-component coupling process
作者:Yukio Yoshida、Yoshitaka Sato、Sentaro Okamoto、Fumie Sato
DOI:10.1039/c39950000811
日期:——
A highly efficient and practical synthesis of enantiomerically pure benzoprostacyclins, chemically stable and therapeutically useful prostaglandin I2 analogues, is developed which includes an efficient preparation of 2-[3-bromo-2-(allyloxy)phenyl]-4-siloxycyclopent-2-en-1-one 3 in optically active form and the conjugate addition of ω side-chains onto 3 followed by cyclization to the key intermediate
开发了一种对映体纯的苯并前列环素,化学上稳定的和治疗上有用的前列腺素I 2类似物的高效实用合成方法,其中包括有效制备2- [3-溴-2-(烯丙氧基)苯基] -4-甲硅烷氧基环戊-2-烯-1-酮3旋光形式和共轭加成ω侧链到3随后环化,以关键中间体(1 - [R,2 - [R,3'小号)-2-内型甲硅烷氧基-1-外型- (3'- siloxyalk -1-烯基)-3一个,8 b -顺式-2,3,3-一个,8 b -四氢- 1 ħ-5-溴环戊[ b ]苯并呋喃4。