Total Synthesis of Natural Acetylenic Analogues of Isorenieratene and Renieratene
作者:Tetsuji Ike、Junji Inanaga、Akio Nakano、Nobuhisa Okukado、Masaru Yamaguchi
DOI:10.1246/bcsj.47.350
日期:1974.2
two natural acetylenic aromatic carotenoids, 7,8-didehydroisorenieratene (1) and 7,8-didehydrorenieratene (2), was carried out. Although the condensations involving C15-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 C25-hexaene yield (derived from 19 and 28) with C15-acetylenic aldehyde (12a) led
进行了两种天然炔属芳香类胡萝卜素 7,8-二脱氢异壬烯酸酯 (1) 和 7,8-二脱氢异壬烯酸酯 (2) 的全合成。尽管涉及 C15-炔属 ylids(衍生自鏻盐 7 和 8)作为中间体的缩合反应仅产生 1 和 2 的 9-顺式异构体,C25-己烯的低温缩合产物(衍生自 19 和 28)与C15-乙炔醛 (12a) 导致全反式 1 和 2,与天然样品相同。