Total Synthesis and Assignment of the Double-Bond Position and Absolute Configuration of (−)-Pyrinodemin A
作者:Yoshiki Morimoto、Satoru Kitao、Tatsuya Okita、Takamasa Shoji
DOI:10.1021/ol034700v
日期:2003.7.1
see text] The first asymmetric total synthesis of a structurally novel cis-cyclopent[c]isoxazolidine alkaloid, (-)-pyrinodemin A (3), which exhibits potent cytotoxicity, has been accomplished through a highly diastereoselective intramolecular nitrone-olefin cycloaddition reaction as the key step. Thus, it has been found that the hitherto unknown absolute configuration of pyrinodemin A is as indicated
[结构:见正文]结构上新颖的顺式环戊[c]异恶唑烷生物碱(-)-吡咯烷素A(3)的首次不对称全合成是通过高度非对映选择性的分子内硝酮-烯烃完成的,具有较强的细胞毒性。环加成反应是关键步骤。因此,发现迄今未知的嘧啶亚胺A的绝对构型如结构式3所示。