ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Carotenoids from Marine Sponges (Porifera): Isolation and Structure of the Seven Main Carotenoids from Agelas schmidtiiThe following carotenoids were identified in the marine sponge Agelas schmidtii: α-carotene ((6′R)-β, ε-carotene (1)), isorenieratene (ϕ,ϕ-carotene (2)), trikentriorhodin (3,8-dihydroxy-κ,χ-caroten-6-one (3)) and zeaxanthin ((3R, 3′R)-β, β-carotene-3, 3′-diol (4)). In addition, three previously unknown carotenoids called agelaxanthin A, B and C were isolated. Spectroscopical and chemical structure elucidation showed agelaxanthin A to be (3 R)-β, ϕ-caroten-3-ol (6) and agelaxanthin C to be a methoxy-19,3′,8′-trihydroxy-7,8-didehydro-β, κ-caroten-6′-one (7) with the methoxy group at C (2), C (3) or C (4). The limited data on age-laxanthin B were compatible with the structure of a 19-O-methyl derivative of agelaxanthin C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19770600831
