Patent ID: 6242600
Filing Date: 2001-06-05
Classification: C07D

Abstract:
A compound of the formula: ##STR38##wherein the ring A is a basic 5- to 7-membered heterocyclic group which may be substituted; the ring B is a divalent 5- to 7-membered nitrogen containing heterocyclic group which may be substituted or a divalent 5- to 7-membered cyclic hydrocarbon group which may be substituted; Y is an optionally substituted methylene group; R.sup.1 is a hydrogen atom, an optionally substituted hydroxy group, an optionally substituted amino group or an optionally substituted hydrocarbon group which may be bound through a carbonyl group, a thio group, a sulfinyl group or a sulfonyl group; R.sup.2 is a hydrogen atom or an optionally substituted hydrocarbon group; R.sup.3 is an optionally esterified or amidated carboxyl group; and D is a lower alkyl group substituted with an optionally esterified carboxyl group; or a salt thereof.