Synthetic studies on nogalamycin congeners [2]1,2 chiral synthesis of the cdef-ring system of nogalamycin
作者:Motoji Kawasaki、Fuyuhiko Matsuda、Shiro Terashima
DOI:10.1016/s0040-4020(01)81432-0
日期:1988.1
chiral synthesis of the (+)-naphthoquinone (4), the CDEF-ring system of nogalamycin congeners, has been accomplished following the synthetic scheme developed for the model (-)-DEF-ring system (3) in the preceding paper. This synthesis features (1) stereoselective construction of the C5'-asymmetric center by introducing the naphthalene moiety into the (-)-methyl ketone (5), the glycoside part, (2) regio-selective
按照上一篇论文为模型(-)-DEF-ring系统(3)开发的合成方案,完成了Nogalamycin同源物的CDEF-ring系统的(+)-萘醌(4)的手性合成。该合成的特征是(1)通过将萘部分引入(-)-甲基酮(5),糖苷部分,(2)1,4,5的区域选择性氧化,将C5'-不对称中心立体选择性构建。 ,8-四甲氧基萘部分与硝酸铈(III)铵结合,和(3)有效形成双环缩醛体系。