Cis Selective Wittig Olefination of α-Alkoxy Ketones and Its Application to the Stereoselective Synthesis of Plaunotol
作者:Seiichi Inoue、Kiyoshi Honda、Norimichi Iwase、Kikumasa Sato
DOI:10.1246/bcsj.63.1629
日期:1990.6
Several Wittig olefinations between α-heterosubstituted acetones and a phosphorus ylide were investigated concerning the product stereoselectivity. Benzyloxyacetone and tetrahydropyranyloxyacetone furnished trisubstituted (Z)-olefins exclusively. The stereoselective preparation of oxygenated acyclic terpenoids was practical by use of the direct Wittig olefination toward α-alkoxy ketones, and it facilitated
研究了 α-杂取代丙酮和磷叶立德之间的几种 Wittig 烯化反应的产物立体选择性。苄氧基丙酮和四氢吡喃氧基丙酮专门提供三取代的(Z)-烯烃。通过使用直接 Wittig 烯化生成 α-烷氧基酮,立体选择性制备含氧无环萜类化合物是实用的,它促进了从香叶醇衍生物以高立体选择性的短步骤全合成 plaunotol。