Novel synthesis of degradation products of carotenoids, megastigmatrienone analogues and blumenol-A

N Ito, T Etoh, H Hagiwara, M Kato

Index: Ito, Nobuhiko; Etoh, Takeaki; Hagiwara, Hisahiro; Kato, Michiharu Journal of the Chemical Society - Perkin Transactions 1, 1997 , # 10 p. 1571 - 1579

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Citation Number: 12

Abstract

Synthesis of 4-alkylidene-3, 5, 5-trimethylcyclohex-2-enones 7 has been achieved utilising 1, 4-conjugate dehydrobromination of allylic bromides 5 as a key step. This chemical transformation is applied to the synthesis of degradation products of carotenoids: megastigmatrienones 7e/1–4, 4-methylene-3, 5, 5-trimethylcyclo