Concerning the Hypericin Sensitized Photooxidation of Bilirubin IXα
✍ Scribed by Karolin Hagenbuchner; Heinz Falk
- Publisher
- Springer Vienna
- Year
- 1999
- Tongue
- English
- Weight
- 152 KB
- Volume
- 130
- Category
- Article
- ISSN
- 0026-9247
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📜 SIMILAR VOLUMES
## Abstract The total synthesis of [10‐^13^C]bilirubin IXα, the principal waste product of haem degradation, is described. Site specific labelling was accomplished by the Vilsmeier formylation of one of the dipyrrolic fragments using [1‐^13^C]dimethylformamide. The penultimate dehydrohalogenation r
## Abstract The three structural isomers bilirubin IXα (**1a**), IIIα (**2a**), and XIIIα (**3a**) have been separated on a preparative scale by high‐performance low‐pressure liquid chromatography. They were converted into their dimethyl esters **1b, 2b**, and **3b** and characterized by UV, IR, MS
Using two-dimensional heteronuclear 'H-13C chemical shift correlation spectroscopy via one-bond and long-range couplings, all 13C resonances of bilirubinl X a and its dimethyl ester in dimethyl sulphoxide solution are assigned, independently from reference to partial structures. Previous ambiguities