Synthesis of (1<i>R</i>,2<i>R</i>)- and (1<i>S</i>,2<i>R</i>)-1,2-Epoxy-3-hydroxypropylphosphonates as Analogues of Fosfomycin
作者:Andrzej E. Wróblewski、Eligia M. Szewczyk、Irena I. Baôk-Sypień
DOI:10.1002/ardp.200900044
日期:2009.9
Cyclohexylammonium (1R,2R)‐1,2‐epoxy‐3‐hydroxypropylphosphonate was conveniently synthesized from dibenzyl (1S,2R)‐2,3‐O‐cyclohexylidene‐1,2,3‐trihydroxypropylphosphonate by a reaction sequence including mesylation, hydrolysis of acetal, intramolecular Williamson reaction, and hydrogenation in the presence of cyclohexylamine. For dibenzyl (1S,2R)‐2,3‐O‐cyclohexylidene‐1,2,3‐trihydroxypropylphosphonates
环己基铵(1R,2R)-1,2-环氧-3-羟丙基膦酸酯由二苄基(1S,2R)-2,3-O-环己叉-1,2,3-三羟丙基膦酸酯通过甲磺酸化、水解等反应顺序合成缩醛、分子内威廉森反应和在环己胺存在下的氢化反应。对于二苄基 (1S,2R)-2,3-O-亚环己基-1,2,3-三羟丙基膦酸酯,相同的方法不成功,因为之前在二苄基 (1R,2R)-中 HO-C3 的环氧化物闭环三苯甲基化2,3-二羟基-1-甲磺酰氧基丙基膦酸酯是必要的,二苄基(1S,2R)-1,2-环氧-3-三苯甲基氧基丙基膦酸酯的氢解产生复杂的反应混合物。