2-isoxazoline derivative and process for producing the same, and process for producing related derivatives from the same

Abstract

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!: ##STR1## (wherein Ph is phenyl; and each of R.sup.1 and R.sup.2 independently represents hydrogen, acyl, alkyloxycarbonyl, arylalkyloxycarbonyl, aryloxycarbonyl, alkylaminocarbonyl, arylalkylaminocarbonyl, arylaminocarbonyl, alkyl, arylalkyl, aryl, alkylsulfonyl, arylalkylsulfonyl, or arylsulfonyl, or R.sup.1 and R.sup.2 are linked to each other to represent divalent acyl).

Dependencies are inferred from the claim text.