作者:Susumu Kobayashi、Keiji Tamura、Atsuo Nakazaki
DOI:10.1055/s-0029-1217826
日期:2009.9
sesquiterpene, (+)-axisonitrile-3. Three key features of this synthesis are: (i) non-Evans syn-aldol reaction of an isovaleric acid derivative bearing a chiral oxazolidinethione and crotonaldehyde with high diastereoselectivity, (ii) Claisen rearrangement of alkenyl dihydropyran affording spiro[4.5]decane with requisite functionalities, and (iii) highly stereoselective reduction in the sterically congested
在这里,我们描述了抗疟倍半萜烯 (+)-axisonitrile-3 的全合成。该合成的三个关键特征是:(i)带有手性恶唑烷硫酮和巴豆醛的异戊酸衍生物的非埃文斯合成羟醛反应,具有高非对映选择性,(ii)链烯基二氢吡喃的克莱森重排,提供具有必要功能的螺[4.5]癸烷,和 (iii) 在空间拥挤的 O-甲基肟系统中的高度立体选择性还原。