(5aR,11bS)-4,5,5a,6,7,11b-hexahydro-2-propyl-3-thia-5-azacyclopenta[c]phenanthrene-9,10-diol (A-86929, 1), a potent selective dopamine D1 agonist, was synthesized enantioselectively from D-aspartic acid. Key features of the 10-step synthesis are the following: (1) there is no chromatography required; (2) formation of 15 occurs in >99% ee; (3) the electrophilic cyclization to provide the desired trans stereochemisty in 18 is achieved with no loss of enantiomeric integrity.
一种活性较强的
多巴胺D1受体激动剂——(5aR,11bS)-4,5,5a,6,7,11b-六氢-2-丙基-3-
硫杂-5-氮杂环戊[c]
菲喃芬[9,10
-二醇](A-86929, 1),已通过D-
天冬氨酸的高对映选择性方法成功合成。该10步合成工艺的关键特点如下:(1)无需色谱分离;(2)化合物15的形成具有>99%的对映体纯度;(3)电环化反应以保持目标式18的反式立体
化学,且在此过程中完全保留对映体完整性。