Novel dipeptide useful as a plant growth regulator
AssigneeNippon Zoki Pharmaceutical Co., Ltd.
InventorsAtsushi Yamamoto, Kazuharu Ienaga, Kunihiko Higashiura, Masaharu Kurohashi
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Abstract
The present invention relates to a novel dipeptide having the formula (I): ##STR1## wherein R represents hydrogen atom or an amino-protecting group, Y represents hydrogen atom or hydroxy group which may optionally have protecting group, and X represents an acidic amino acid residue which may optionally have at least one protecting group; and pharmaceutical acceptable salt thereof. These dipeptides are useful as plant growth regulator.
Claims8
A dipeptide having the formula (I):
- ##STR3## wherein R represents a hydrogen atom or an amino-protecting group selected from the group consisting of t-butoxycarbonyl, t-pentoxycarbonyl, benzyloxycarbonyl, o-chlorobenzyloxycarbonyl, p-nitrobenzyloxycarbonyl and p-methoxybenzyloxycarbonyl, Y represents hydrogen atom or hydroxy group having a protecting group selected from the group consisting of benzyl, bromobenzyl, chlorobenzyl and t-butyl, and X represents glutamic acid or aspartic acid which may optionally have at least one protecting group selected from the group consisting of benzyloxy, p-methoxybenzyloxy, t-butoxy, t-pentoxy, cyclopentyloxy, cyclohexyloxy and piridiloxy;
- and pharmaceutical acceptable salts thereof.
A dipeptide having the formula (I'):
- ##STR4## wherein Y' represents hydrogen atom or hydroxy group, and X' represents glulamic acid or aspartic acid;
- and pharmaceutical acceptable salt thereof.
A plant growth regulator composition comprising as an active ingredient an effective amount of at least one dipeptide of the formula (I):
- ##STR5## wherein R represents a hydrogen atom or an amino-protecting group selected from the group consisting of t-butoxycarbonyl, t-pentoxycarbonyl, benzyloxycarbonyl, o-chlorobenzyloxycarbonyl, p-nitrobenzyloxycarbonyl and p-methoxybenzyloxycarbonyl, Y represents hydrogen atom hydroxy group having a protecting group selected from the group consisting of benzyl, bromobenzyl, chlorobenzy and t-butyl, and X represents glutamic acid or aspartic acid which may optionally have at least one protecting group selected from the group consisting of benzyloxy, p-methoxybenzyloxy, t-butoxy, t-pentoxy, cyclopentyloxy, cyclohexyloxy and piridiloxy;
- and pharmaceutical acceptable salts thereof.
Dependencies are inferred from the claim text.