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.
本发明涉及一种新型制备(3R, 3aS, 6aR)-己氢
呋喃[2,3-b]
呋喃-3-醇的方法,通过将式VII化合物与式R2-OH化合物在卤代试剂存在下反应得到化合物VI,然后用去卤代试剂处理化合物VI得到化合物V,通过还原化合物V,随后环化得到化合物IV,并从化合物IV中分离对映体和异构体,最终得到化合物I。化合物I可用作制备蛋白酶抑制剂的中间体,特别是广谱HIV蛋白酶抑制剂的制备。本发明还涉及从(3R, 3aS, 6aR)-己氢
呋喃[2,3-b]
呋喃-3-醇制备
达芦那韦的方法。