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Carotenoids and Related Compounds. Part 36.. Further syntheses of zeaxanthin and rhodoxanthin

✍ Scribed by Peter R. Ellis; A. Erol Faruk; Gerard P. Moss; Basil C. L. Weedon

Book ID
102250568
Publisher
John Wiley and Sons
Year
1981
Tongue
German
Weight
373 KB
Volume
64
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A modification of a previously reported synthesis of zeaxanthin (1), and routes to both zeaxanthin and rhodoxanthin (2) from α‐ionone, are described.

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✍ Milan Soukup; Erich Widmer; Theodor Lukáč 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 German ⚖ 420 KB

## Abstract Starting from the readily available, optically active (4__R__)‐hydroxy‐2,2,6‐trimethylcyclohexanone (2), a new technical synthesis of (3__R__,3′__R__)‐zeaxanthin is described. According to a completely new C~9~+C~2~+C~4~ = C~15~ scheme, the ketone 2 was protected, ethynylated with Li‐ac