Prins cyclization to tetrahydrofuran units of polyether antibiotics: Remarkable siloxy effect for stereocontrolled cyclization
作者:Koichi Mikami、Masaki Shimizu
DOI:10.1016/0040-4020(96)00252-9
日期:1996.5
A novel route to substituted tetrahydrofurans is described, which is based on the Lewis acid-promoted Prins cyclization with side chain formation of carbon-carbon bond. Bishomoallylic silyl ethers, rather than the (chloro)benzyl ethers and esters, provide selectivity tetrahydrofurans, indicating the siloxy effect for facilitating the cyclization.
描述了一种新的取代四氢呋喃的方法,该方法基于路易斯酸促进的Prins环化反应,并形成碳-碳键的侧链。双烯丙基烯丙基甲硅烷基醚而不是(氯)苄基醚和酯提供选择性的四氢呋喃,表明甲硅烷氧基作用有助于环化。