Highly α-selective hydrolysis of α,β-epoxyalcohols using tetrabutylammonium fluoride.

Highly α-selective hydrolysis of α,β-epoxyalcohols using tetrabutylammonium fluoride.
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DOI:
10.1021/ol1015306
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发表时间:
2010-09-17
期刊:
影响因子:
5.2
通讯作者:
Schroeder FC
Schroeder FC
中科院分区:
化学1区
文献类型:
--
作者:
Mukerjee P;Abid M;Schroeder FC

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我们报告了一种高度区域和立体选择性水解 α,β-环氧醇的简单方法。用 TBAF/H2O 对 Sharpless 环氧化衍生的对映体纯环氧醇进行处理,导致在通常不利的 α 位上完全开环,从而获得阿拉伯或来苏构型三醇,并完全保留立体化学纯度。该方法应用于合成 5-脱氧-L-阿拉伯糖 (26) 和基于昆虫信息素羟基短缩醛 (4) 的双环缩醛家族。
We report a simple method for the highly regio- and stereoselective hydrolysis of α,β-epoxyalcohols. Treatment of enantiopure epoxyalcohols derived from Sharpless epoxidation with TBAF/H2O resulted in exclusive ring opening at the normally disfavored α-position, providing access to arabino- or lyxo-configured triols with full preservation of stereochemical purity. The method was applied in syntheses of 5-deoxy-L-arabinose (26) and a family of bicyclic acetals based on the insect pheromone hydroxybrevicomin (4).
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