Total synthesis of natural acetylenic analogues of isorenieratene and renieratene

T Ike, J Inanaga, A Nakano, N Okukado…

Index: Ike; Inanaga; Nakano; et al. Bulletin of the Chemical Society of Japan, 1974 , vol. 47, # 2 p. 350 - 354

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Citation Number: 13

Abstract

The total synthesis of two natural acetylenic aromatic carotenoids, 7, 8- didehydroisorenieratene (1) and 7, 8-didehydrorenieratene (2), was carried out. Although the condensations involving C 15-acetylenic ylids (derived from the phosphonium salts 7, and 8) as the intermediates gave only 9-cis isomers of 1 and 2, low-temperature condensations of C 25-hexaene yield (derived from 19 and 28) with C 15-acetylenic ...