Synthesis of Carbohydrate-Derived Enynes and Subsequent Metathesis to Yield Polyhydroxylated 1-Vinylcycloalkenes
作者:Franck Dolhem、Catherine Lièvre、Gilles Demailly
DOI:10.1002/ejoc.200300102
日期:2003.6
In this paper, a new route toward polyhydroxylated 1-vinylcycloalkenes is presented. 1,6- and 1,7-enynes were synthesized in four steps from glyco-ynitols, which are readily available from monosaccharides. These compounds were then cyclized by ring-closing enyne metathesis to afford the title compounds. For example, we converted (2R,3S,4R)-1-O-tritylhept-6-yne-1,2,3,4-tetrol (1) to the corresponding
在本文中,提出了一种制备多羟基化 1-乙烯基环烯烃的新途径。1,6- 和 1,7- 烯炔是从糖-炔醇中分四步合成的,糖醇很容易从单糖中获得。然后通过闭环烯炔复分解将这些化合物环化,得到标题化合物。例如,我们将 (2R,3S,4R)-1-O-tritylhept-6-yne-1,2,3,4-tetrol (1) 转化为相应的 1,7-enyne 13,产率为 53%。在 Mori 条件下,1,7-烯炔 13 与 Grubbs 催化剂的闭环复分解产生相应的多羟基化 1-乙烯基环己烯 19,产率为 72%。以令人满意的收率将几种糖-炔醇转化为多羟基化的 1-乙烯基环烯烃。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)