期刊名称：Journal of Nutritional Science and Vitaminology
印刷版ISSN：0301-4800
电子版ISSN：1881-7742
出版年度：1983
卷号：29
期号：2
页码：111-122
DOI：10.3177/jnsv.29.111
出版社：Center for Academic Publications Japan
摘要：Thermal isomerization of synthetic all-( E )-β-carotene yielded a multi-component mixture composed of more than sixteen ( Z )-β-carotenes and two thermo-cyclized isomers. They were separated and purified by high-performance liquid chromatography. Ten of these were characterized by spectroscopic methods as four mono-( Z )-, five di-( Z )-, and one tri-( Z )-β-carotenes; the 7-( Z )-, 9-( Z )-, 13-( Z )-, 15-( Z )-, 9.13-( Z )-, 9.15-( Z )-, 9.13'-( Z )-, 13.15-( Z )-, 7.13'-( Z )-, and 9.9'.13-(Z)-isomers were included. Stereochemistry of six additional ( Z )-isomers obtained is, as yet, unknown, though one of them might have the 9.9'-( Z )-geometry in the molecule. This is the first report on the formation and identification of the ‘sterically hindered’ 7-( Z )-isomers as well as the (5→10)-thermo-cyclized products in the field of alicyclic carotenoids
