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.
摘要:
The present invention provides a compound of formula (I), wherein ring A is an optionally substituted aromatic hydrocarbon ring or aromatic heterocyclic ring; ring B is an optionally substituted aromatic hydrocarbon ring or aromatic heterocyclic ring; Z is an optionally substituted cyclic group or linear hydrocarbon group; R1 is a hydrogen atom, an optionally substituted hydrocarbon group or heterocyclic ring; R2 is an optionally substituted amino group; D is a bond or an optionally substituted divalent hydrocarbon ring; E is a bond, -CON(Ra)-, -N(Ra)CO-, -N(R?b)CON(Rc¿)-, -N(Rd)COO-, -N(Re)SO2-, -COO-, -N(Rf)-, -O-, -S-, -SO-, -SO¿2?-, and formula (a) or (b) (in which R?a, Rb, Rc, Rd, Re and Rf¿ are respectively a hydrogen atom or an optionally substituted hydrocarbon group); G is a bond or an optionally divalent substituted hydrocarbon group; L is a divalent group; ring B may form an optionally substituted non-aromatic condensed nitrogen-containing heterocyclic ring by combining with R2; X is two hydrogen atoms, an oxygen atom or a sulfur atom; ......... is a single bond or a double bond, and Y is a nitrogen atom when ......... is a double bond, or an oxygen atom, -N(R4)-, (in which R4 is a hydrogen atom, an optionally substituted hydrocarbon group or an acyl group) or S(O)¿n? (in which n is 0, 1 or 2) when ......... is a single bond, or a salt thereof, which have somatostatin receptor agonistic action.