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The reactions of heterocyclic systems with singlet oxygen. Photosensitized oxygenation of imidazoles

✍ Scribed by H.H. Wasserman; K. Stiller; M.B. Floyd

Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
199 KB
Volume
9
Category
Article
ISSN
0040-4039

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✦ Synopsis

The reactions of imidamoles with singlet oxygen are of special interest in view of the probable involvement of the imidasole system in the photooxidative inactivation of certain enzymes. Thus, loss of biological activity during photooxidation of phosphoglucomutase3, ribonuclease4 and insulin5, among other enzymes, has been correlated with the disappearance of histidine residues and, accordingly, with the oxidative destruction of imidasole rings. Earlier work6'7'g has shown that photooxidation of lophine (2,4,5_triphenylimidazole

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