A new practical synthesis of (+)-grandisol from (+)-citronellol using an intramolecular carbenoid cyclization
作者:Hugo J. Monteiro、Julio Zukerman-Schpector
DOI:10.1016/s0040-4020(96)00175-5
日期:1996.3
A new practical 10 step synthesis of (1S,2R)-2-acetyl-1-methylcyclobutaneacetic acid 15 is reported, which has as a key step a rhodium catalyzed intramolecular carbenoid cyclization of the α-diazo-β-ketosulfone 5, readily available from (+)-citronellol 2. Since 15 has already been converted into (+)-grandisol 1, the major pheromone of the cotton boll-weevil Anthonomus grandis, the described preparation
的一种新的实用的10步合成(1S,2R)-2-乙酰基-1- methylcyclobutaneacetic酸15被报告,其具有作为一个关键步骤铑催化的分子内卡宾的α重氮基β酮砜的环化5,容易获得的来自(+)-香茅醇2。由于15已经被转化为(+)-grandisol 1,即棉铃象鼻虫Anthonomus grandis的主要信息素,因此所描述的制备方法构成了光学活性信息素的新形式合成。