## Abstract Freshly prepared solutions of biliverdin dimethyl ester (**2**) in ethanol showed fluorescence maxima at 710 and 770 nm [ฮฆ~F~ = 1.1. 10^โ4^ (room temperature) and 5.0 10^โ4^ (77 K)]. The maxima of monoprotonated **2** at 77 K were shifted to 725 and 806 nm and the quantum yield was incr
The interaction of biliverdin and its dimethyl ester with superoxide ion
โ Scribed by Guido Galliani; Diego Monti; Giovanna Speranza; Paolo Manitto
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 214 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
The reactivity of superoxide ion (0;)' toward biological compounds has become subject of considerable interest since the discovery that 01 is a respiratory intermediate of aerobic
๐ SIMILAR VOLUMES
## Abstract Biliverdin dimethyl ester (**1b;** IXฮฑ) and its XIIIฮฑ isomer **2b** have been isolated on a preparative scale after esterification of an isomeric mixture obtained by oxidation of bilirubin. Both isomers readily form solid solutions. The substitution patterns and the predominant helical
The reaction of potassium superoxide with vitamin K, and its related compounds in the presence of crown ether gave the corresponding 2,3-oxide and nhthalic acid. The oxidative cleavage of oxirane ring by superoxide ion has been observed with vitamin K, 2,3-oxide and certain epoxides.