Patent ID: 6221637
Filing Date: 2001-04-24
Classification: C07D,C07K

Abstract:
A compound having the structure: ##STR37##whereinR.sup.1 is a carboxyl group, an esterified carboxyl group, or an amidated carboxyl group;R.sup.2 is a hydrogen atom, a hydroxyl group, a hydrocarbon group, or a substituted hydrocarbon group;R.sup.3 and R.sup.4 are the same or different and are a hydroxyl group or a hydroxyl group which is substituted by an acyl group, a C.sub.1-10 alkyl group or a substituted C.sub.1-10 alkyl group;R.sup.5 and R.sup.6 are the same or different and are a hydrogen atom or a halogen atom;R.sup.7 is a hydrogen atom, a nitro group, a halogen atom, a hydrocarbon group, a substituted hydrocarbon group, a heterocyclic group, a substituted heterocyclic group, an acyl group, or a substituted acyl group;n is an integer of is 0 to 2;R.sup.99 is a carbonyl or --CH.sub.2 --; andwhen n is 0, R.sup.2 may be a group represented by the structure: ##STR38##wherein the symbols have the same meanings as defined above, or a salt thereof.