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(E/Z)-Isomerization of 3′-Epilutein

✍ Scribed by Péter Molnár; József Deli; Erzsébet Ősz; Zoltán Matus; Gyula Tóth; Ferenc Zsila

Publisher
John Wiley and Sons
Year
2004
Tongue
German
Weight
250 KB
Volume
87
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

3′‐Epilutein (=(all‐E,3__R__,3′S,6′R)‐4′,5′‐didehydro‐5′,6′‐dihydro‐β,β‐carotene‐3,3′‐diol; 1), isolated from the flowers of Caltha palustris, was submitted to both thermal isomerization and I~2~‐catalyzed photoisomerization. The structures of the main products (9__Z__)‐1, (9′Z)‐1, (13__Z__)‐1, (13′Z)‐1, (15__Z__)‐1, and (9__Z__,9′Z)‐1 were determined based on UV/VIS, CD, ^1^H‐NMR, and MS data.

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