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Technical Procedures for the Syntheses of Carotenoids and Related Compounds from 6-Oxo-isophorone: Syntheses of (3R,3′R)-Zeaxanthin. Part I

✍ Scribed by Erich Widmer; Milan Soukup; Reinhard Zell; Emil Broger; Hans Peter Wagner; Marquard Imfeld

Publisher: John Wiley and Sons
Year: 1990
Tongue: German
Weight: 454 KB
Volume: 73
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19900730411

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✦ Synopsis

Dedicated to Dr. Otfo Isler on the occasion of his 80th birthday (23.1V.90

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Technical Procedures for the Syntheses of Carotenoids and Related Compounds from 6-Oxo-isophorone: Syntheses of (3R,3′R)-Zeaxanthin. Part II

✍ 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