Monatshefte für Chemie-Chemical Monthly

Synthesis and properties of mesobilirubins XIIγ and XIIIγ and their mesobiliverdins

PMG Sabido, DA Lightner

Index: Sabido, Portia Mahal G.; Lightner, David A. Monatshefte fur Chemie, 2014 , vol. 145, # 5 p. 775 - 789

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Citation Number: 3

Abstract

Abstract The title pigments, with propionic acid groups displaced to the lactam end rings, were synthesized for the first time by the “1+ 2+ 1” approach, coupling two equivalents of a monopyrrole to a dipyrrylmethane (to give XIIγ), or the “2+ 2” approach, self-coupling two equivalents of a dipyrrinone (to give XIIIγ). Using the “1+ 2+ 1” approach, mesobilirubin IIIα was also prepared. Mesobilirubins XIIγ and XIIIγ are more polar than mesobilirubin IIIα ...