Patent ID: 6329547
Filing Date: 2001-12-11
Classification: C07C,C07F

Abstract:
A compound represented by the following general formula (I) or a salt thereof, ##STR36##wherein R.sup.1 is hydrogen, lower alkyl or substituted or unsubstituted phenyl phenyl, and the phenyl can be substituted by wherein the substituents are selected from the group consisting of lower alkyl, hydroxy, lower alkoxy, halogen, nitro or phenyl,R.sup.2 and R.sup.3, being the same or different, are hydrogen, halogen or lower alkyl,R.sup.4 and R.sup.5, being the same or different, are hydrogen, lower alkyl or carboxylic acid or carboxylic ester thereof,R.sup.6 is carboxylic acid or carboxylic ester; or phosphono or ester thereof.