Carotenoids and related compounds. Part XXXIV. Synthesis of violerythrin and other cyclopentenediones
R Coman, AP Leftwick, BCL Weedon
Index: Coman; Leftwick; Weedon Journal of the Chemical Society. Perkin transactions 1, 1976 , # 20 p. 2140 - 2144
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Citation Number: 3
Abstract
On treatment with manganese dioxide, carotenoid diosphenols are converted into 2-nor- analogues with a cyclopentenedione end group. Thus astacene (3, 3′-dihydroxy-2, 3, 2′, 3′-tetradehydro-β, β-carotene-4, 4′-dione) yields the blue pigment violerythrin (2, 2′- dinor-β, β-carotene-3, 4, 3′, 4′-tetraone).
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