The structure of 2-oxo-8α-angeloyloxy-11α-acetoxy-5βH,6αH,7αH-guai-1(10),3-dien-6,12-olide, a sesquiterpenic lactone from Laserpitium prutenicum L. revision of the stereostructures of native 2-oxoguai-1(10),3-dien-6,12-olides from the species of the Umbelliferae family
- 1 January 1985
- journal article
- Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications
- Vol. 50 (11) , 2607-2624
- https://doi.org/10.1135/cccc19852607
Abstract
On the basis of an analysis of its NMR spectra and X-ray analysis the stereostructure of the so-called 4-acetoxypruteninone-(10) (laferin) has been corrected to that of formula I. The stereostructures of almost all so far described native 2-oxoguai-1(10),3-dien-6,12-olides isolated from the species of Umbelliferae have been corrected on the basis of 1H NMR parameters.Keywords
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