The chemistry of pyrrolic compounds. XIV. meso-Hydroxyprotoporphyrin IX and its derivatives

Abstract

The preparation of the acetate and benzoate derivatives of �-hydroxy-protoporphyrin IX is described and the hydrolysis of these enolic esters examined. The general properties of these porphyrins are discussed together with the oxidation of this system to a bile pigment identical with biliverdin IX�: with regard to spectroscopic and chromatographic characteristics.