[EN] SYNTHESIS OF SPIRO ORTHO ESTERS, SPIRO ORTHO CARBONATES, AND INTERMEDIATES<br/>[FR] SYNTHESE DE SPIRO-ORTHO-ESTERS, DE SPIRO-ORTHO-CARBONATES ET D'INTERMEDIAIRES
申请人:BIOAVAILABILITY SYSTEMS LLC
公开号:WO2004037827A1
公开(公告)日:2004-05-06
Ortho esters and ortho carbonates can be produced by alkylating esters and carbonates with, for example, the hexafluorophosphate salt of a trialkyl oxonium ion. The spiro species are useful intermediates in the synthesis of complex organic molecules. Synthetic pathways for the production of medically active compounds incorporates spiro ortho esters. Anti-first-pass effect materials are produced in high yield utilizing a synthetic strategy incorporating cyclic ortho ester intermediates.
正酯和正碳酸酯可以通过与三烷基氧铵离子的六氟磷酸盐进行烷基化来制备。螺环物种在复杂有机分子的合成中是有用的中间体。用于生产具有药用活性的化合物的合成途径包括螺环正酯。利用包含环状正酯中间体的合成策略,高产率地生产抗第一过肝效应材料。