Compounds and methods for treating tumors

Abstract

The compounds of the formula, ##STR1## wherein the ring A is a pyrrole ring which may be hydrogenated; --B-- is a divalent cyclic or chain group which may be substituted; one of Q.sup.1 and Q.sup.2 is N, with the other being N or CH; W is a halogen or hydrogen atom or a group bonded to the bonding line with a carbon, nitrogen, oxygen or sulfur atom, provided that W is not --NH.sub.2 ; X is an amino, hydroxyl or mercapto group; Y is a hydrogen atom or a hydroxyl or amino group; Z is a straight-chain divalent group having a number of atoms of 2 to 5 composed of carbon atoms which each may be substituted, or carbon atoms which each may be substituted and one hetero atom which may be substituted; --COOR.sup.1 and --COOR.sup.2 each is the same as or different from the other and represents a carboxyl group which may be esterified, or salts thereof are provided. The compounds are produced by reacting compounds of the formula, ##STR2## wherein A, --B--, W, W, X, Y, Q.sup.1 and Q.sup.2 are the same as defined above, with compounds of the formula, ##STR3## wherein --COOR.sup.1 and --COOR.sup.2 are the same as defined above, and useful as anti-tumor agents.

Dependencies are inferred from the claim text.