Guaianolides and germacranolides from Stevia grisebachiana
作者:Emma E. Sigstad、César A.N. Catalán、Alicia B. Gutiérrez、Jesús G. Diaz、Virgil L. Goedken、Werner Herz
DOI:10.1016/0031-9422(91)85043-y
日期:1991.1
The aerial parts of Stevia grisebachiana afforded, in addition to estafietin, 11-alpha-H,13-dihydroestafietin, dehydroleucodin, 10-epi-8-deoxycumambrin, hanphyllin and loliolide, seven new guaianolides and one new germacranolide. The structure of the latter, 4-epitansanin, was confirmed by X-ray analysis.