Studies on the syntheses of sesquiterpene lactones. 15. Syntheses of four possible diastereoisomers of Bohlmann's structure of isoepoxyestafiatin. The stereochemical assignment of isoepoxyestafiatin
摘要:
The stereochemistry of isoepoxyestafiatin was determined to be 1beta,10beta:3alpha,4alpha-diepoxyguaia-11(13)-eno-12,6alpha-lactone by the syntheses of the four possible diastereoisomers 23-26.
10-Epideoxycumambrin b and other constituents of Stevia yaconensis var. subeglandulosa
作者:Virginia E. Sosa、Juan C. Oberti、Roberto R. Gil、Edmundo A. Rúveda、Virgil L. Goedken、Alicia B、Gutiérrez、Werner Herz
DOI:10.1016/s0031-9422(00)97888-9
日期:1989.1
Stevia yaconensis var. subeglandulosa afforded in addition to the known guaianolides ludartin and dehydroleucodin a new guaianolide 10-epi-8-deoxycumambrin B whose relative and absolute configurations were established by X-ray crystallography. Chemical transformations of ludartin established its relative and absolutestereochemistry.
摘要 Stevia yaconensis var. 的地上部分。除了已知的愈创木酚内酯 ludartin 和脱氢亮氨酸之外,subeglandulosa 还提供了一种新的愈创木酚内酯 10-epi-8-deoxycumambrin B,其相对和绝对构型由 X 射线晶体学确定。ludartin 的化学转化建立了其相对和绝对立体化学。
SOSA, VIRGINIA E.;OBERTI, JUAN C.;GIL, ROBERTO R.;RUVEDA, EDMUNDO A.;GOED+, PHYTOCHEMISTRY, 28,(1989) N, C. 1925-1929
作者:SOSA, VIRGINIA E.、OBERTI, JUAN C.、GIL, ROBERTO R.、RUVEDA, EDMUNDO A.、GOED+
DOI:——
日期:——
Studies on the syntheses of sesquiterpene lactones. 15. Syntheses of four possible diastereoisomers of Bohlmann's structure of isoepoxyestafiatin. The stereochemical assignment of isoepoxyestafiatin
作者:Masayoshi Ando、Hideki Yoshimura
DOI:10.1021/jo00067a056
日期:1993.7
The stereochemistry of isoepoxyestafiatin was determined to be 1beta,10beta:3alpha,4alpha-diepoxyguaia-11(13)-eno-12,6alpha-lactone by the syntheses of the four possible diastereoisomers 23-26.