Patent ID: 6018069
Filing Date: 2000-01-25
Classification: C07C,C07D

Abstract:
A method for purifying a (2S, 3S, 5S)-2,5-diamino-1,6-diphenyl-3-hydroxyhexane compound, comprising selectively obtaining an acid addition salt of a (2S, 3S, 5S)-2,5-diamino-1,6-diphenyl-3-hydroxyhexane compound from a mixture of acid addition salts formed by a mixture, at an arbitrary ratio of a (2S, 3S, 5S)-2,5-diamino-1,6-diphenyl-3-hydroxyhexane compound represented by formula [7] and a (2S, 3S, 5R)-2,5-diamino-1,6-diphenyl-3-hydroxyhexane compound represented by formula [8] and an arbitrary acid: ##STR8## wherein Ph represents 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.