A short and convenient access to a trans-hydrindane unit from the anti-meso-acetylmethyldivinylcyclopentane via a radical pathway
作者:Anne-Sophie Chapelon、Cyril Ollivier、Maurice Santelli
DOI:10.1016/j.tetlet.2006.02.076
日期:2006.4
multigram synthesis of a trans-hydrindane unit, involving a selective 6-endo-trig α-carbonyl radical cyclization of the α-xanthyl ketone 10 derivating from the anti-meso-acetylmethyldivinylcyclopentane 9 through a xanthate group transfer, is achieved in good yield. Preparation of an advanced intermediate for the Julia–Kocienski coupling, used in the elaboration of the trienic system of vitamin D (or calciferol)
实现了反式-氢化茚单元的多谱图合成的有效途径,该方法涉及通过黄原酸酯基团转移衍生自抗-内消旋-乙酰甲基二乙烯基环戊烷9的α-黄嘌呤酮10的选择性6-内-trigα-羰基自由基环化。产量高。通过将黄原酸酯部分转化为2-苯并噻唑磺酰基,可以实现用于Julia-Kocienski偶联的高级中间体的制备,该中间体用于阐述维生素D(或骨化醇)类似物的三烯体系。