申请人:Vellenki Siva Rama Prasad
公开号:US08841467B2
公开(公告)日:2014-09-23
The present invention relates to a novel process for the preparation of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol of formula I by reacting a compound of formula VII with the compound of formula R2-OH in the presence of haloginating agent to obtain a compound of formula VI and treating a compound of formula VI with dehaloginating agent to obtain a compound of formula V by reducing a compound of formula V, followed by cylization to obtain compound of formula IV and separating the enantiomer and diastereomers from compound of formula IV to yield a compound of formula I. Compound of formula I is useful as an intermediate in the preparation of protease inhibitors, in particular broad spectrum HIV protease inhibitors, the present invention also relates to process for the preparation of Darunavir from (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol.
本发明涉及一种新的制备(3R,3aS,6aR)-六氢呋喃[2,3-b]呋喃-3-醇(式I)的方法,通过在卤化试剂存在下将式VII化合物与式R2-OH化合物反应得到式VI化合物,并用去卤试剂处理式VI化合物以得到式V化合物,然后还原式V化合物,随后环化以得到式IV化合物,从式IV化合物中分离对映体和非对映异构体,以得到式I化合物。式I化合物在制备蛋白酶抑制剂,特别是广谱HIV蛋白酶抑制剂的中间体中有用。本发明还涉及一种从(3R,3aS,6aR)-六氢呋喃[2,3-b]呋喃-3-醇制备达芦那韦的方法。