Patent ID: 6245810
Filing Date: 2001-06-12
Classification: C07C

Abstract:
An amino acid derivative having the formula: ##STR125##wherein R.sup.1a is a linear or branched alkyl group or a mono- or di-hydroxy-substituted linear or branched alkyl group selected from the group consisting of the alkyl groups and mono- or di-hydroxy-substituted alkyl groups which are represented by the formula: ##STR126##R.sup.3b is a C.sub.1 -C.sub.8 alkyl group, R.sup.4a is a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and R.sup.5a is a hydroxyl group, a C.sub.1 -C.sub.8 alkoxy group or an aralkyloxy group, or a pharmaceutically acceptable salt thereof.