作者:Jun Xie、David A. Horne
DOI:10.1016/j.tetlet.2009.05.092
日期:2009.8
A stereoselective synthesis of the cyclic hemiketal core of iriometeolide-1a (1) is described. The key step involves a Sakurai reaction of allylsilane 4 and aldehyde 5, which bears a chiral α-tertiary center. Mild TES deprotection of β,γ-unsaturated ketone 23 led to concomitant cyclization to produce the fully intact hemiketal core 2.
立体选择性合成的iriometeolide-1a(1)的环状半基因核心。关键步骤涉及烯丙基硅烷4和醛5的Sakurai反应,该醛具有手性α-叔中心。β,γ-不饱和酮23的轻度TES脱保护导致伴随的环化反应,以产生完全完整的半缩酮核心2。