发明公开
EP1284260A1 TYROSINE PHOSPHATASE INHIBITORS 审中-公开
酪氨酸磷酸酶抑制剂

TYROSINE PHOSPHATASE INHIBITORS
摘要:
A compound of the formula (I):
   wherein X 1 and X 2 are the same or different and each is a bond or a spacer having 1 to 20 atom(s) in the main chain;
   one of R 1 and R 2 is a cycle group having substituent(s) selected from 1) an optionally substituted carboxy-C 1-6 alkoxy group and 2) an optionally substituted carboxy-C 1-6 aliphatic hydrocarbon group, wherein the cycle group optionally has additional substituent(s), and the other is an optionally substituted cycle group or a hydrogen atom; and
   R 3 , R 4 and R 5 are the same or different and each is a hydrogen atom or a substituent, or R 4 may link together with R 3 or R 5 to form an optionally substituted ring;
   provided that when R 3 is a hydrogen atom, R 4 is a hydrogen atom and R 5 is methyl, X 2 -R 2 is not 4-cyclohexylphenyl; when R 3 is 4-methoxyphenyl, R 4 is a hydrogen atom and R 5 is methyl, X 2 -R 2 is not 4-methoxyphenyl; and when R 1 or R 2 is a hydrogen atom, the adjacent X 1 or X 2 is not a C 1-7 alkylene;
or a salt thereof exhibits a protein tyrosine phosphatase inhibitory action and is useful as a prophylactic or therapeutic agent for diabetes or the like.
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