2-ISOXAZOLINE DERIVATIVE AND PROCESS FOR PRODUCING THE SAME, AND PROCESS FOR PRODUCING RELATED DERIVATIVES FROM THE SAME
申请人:DAICEL CHEMICAL INDUSTRIES, LTD.
公开号:EP0748801A1
公开(公告)日:1996-12-18
The present invention provides useful intermediates for the synthesis of 2,5-diamino-1,6-diphenyl-3-hydroxyhexane derivatives which serve as intermediates in the synthesis of medicines such as retrovirus protease inhibitors including human immunodeficiency virus (HIV) protease inhibitors, and a method for preparing these intermediates using the former intermediates.
More particularly, the invention provides methods for preparing a 2-isoxazoline derivative represented by formula [1] and a 2,5-diamino-1,6-diphenyl-3-hydroxyhexane derivative obtainable by reducing the 2-isoxazoline derivative and represented by formula [6]:
(wherein Ph is phenyl; and each of R1 and R2 independently represents hydrogen, acyl, alkyloxycarbonyl, arylalkyloxycarbonyl, aryloxycarbonyl, alkylaminocarbonyl, arylalkylaminocarbonyl, arylaminocarbonyl, alkyl, arylalkyl, aryl, alkylsulfonyl, arylalkylsulfonyl, or arylsulfonyl, or R1 and R2 are linked to each other to represent divalent acyl).
本发明提供了用于合成 2,5-二氨基-1,6-二苯基-3-羟基己烷衍生物的有用中间体,这些衍生物可作为合成逆转录病毒蛋白酶抑制剂(包括人类免疫缺陷病毒(HIV)蛋白酶抑制剂)等药物的中间体,本发明还提供了使用前一种中间体制备这些中间体的方法。
更具体地说,本发明提供了制备由式[1]表示的 2-异噁唑啉衍生物和可通过还原 2-异噁唑啉衍生物获得的由式[6]表示的 2,5-二氨基-1,6-二苯基-3-羟基己烷衍生物的方法:
(其中Ph为苯基;R1和R2各自独立地代表氢、酰基、烷氧羰基、芳烷氧羰基、芳氧羰基、烷基氨基羰基、芳基氨基羰基、烷基、芳基、芳基烷基、烷基磺酰基、芳基烷基磺酰基或芳基磺酰基,或R1和R2彼此相连代表二价酰基)。