Premium
Ptérobiline et néoptérobilines, réactivité et structures
Author(s) -
Choussy Michèle,
Barbier Michel
Publication year - 1975
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19750580849
Subject(s) - chemistry , reactivity (psychology) , mass spectrometry , bile pigments , stereochemistry , pigment , medicinal chemistry , organic chemistry , chromatography , medicine , alternative medicine , pathology
Pterobiline and neopterobilines, reactivity and structures Pterobiline (biliverdine IX γ) and the two neopterobilines: phorcabiline and sarpedobiline, are the three main bile pigments found in Lepidopters. Studies on the reactivity of pterobiline ( 1 ) and phorcabiline esters are reported. Preparation of derivatives, in vitro transformation of pterobiline into phorcabiline, analysis of the pigments and their derivatives by field desorption mass spectrometry and Fourier transform NMR., lead to the structure 5 for the dimethyl ester of phorcabiline. By a similar reaction, biliverdine IX δ ( 15 ) affords the neobiliverdine IX δ ( 16 ). Possibility of an easy formation of new tetrapyrrolic compounds in the IX γ and IX δ series is thus reported for the first time.