Cytotoxic germacranolides of Elephantopus carolinianus and the structure and stereochemistry of isodeoxyelephantopin
作者:Decheng Zhang、Mitsumasa Haruna、Andrew T. McPhail、Kuo-Hsiung Lee
DOI:10.1016/0031-9422(86)80023-1
日期:——
Elephantopus carolinianus yielded two cytotoxic sesquiterpene lactones, deoxyelephantopin and isodeoxyelephantopin, as well as 11β,13-dihydrodeoxyelephantopin which is devoid of cytotoxicity. The structures and stereochemistries of isodeoxyelephantopin and 11β,13-dihydrodeoxyelephantopin were determined by spectroscopic analysis, chemical transformations and X-ray analysis.
摘要 北卡罗来纳象牙属carolinianus 的整个部分产生了两种细胞毒性倍半萜内酯,脱氧象素和异脱氧象素,以及无细胞毒性的11β,13-二氢脱氧象素。通过光谱分析、化学转化和 X 射线分析确定了异脱氧象素和 11β,13-二氢脱氧象素的结构和立体化学。