Porphyrin derivatives, and their production and use

摘要: A porphyrin compound of the formula: ##STR1## wherein R1 and R2 are each --CH═CH2, --CH2 CHJ3, --CH(O-lower alkanoyl)CH3, --CH(OR)CH3 or alkylene-OR)CH3 ; R3 is --H, --COOH, --COO-lower alkyl, alkylene-OR alkylene-OOC-Z; R4 -lower alkyl alkylene-OR; R a residue polyfunctional carboxyl excluding hydrogen atom therefrom; Z formula (I) -- --CO--; dotted line from gamma-position indicates no bonding single direct bond; between 7- 8-positions presence bond double its complexes with metal(s) in porphine skeleton and/or at compound, least one R1, R2, being group containing which represents capable representing 1-iodoethyl addition to said meanings when alkylene-OOC-Z, shows high accumulation locus cancer quick excretion normal tissues.