92122-86-6Relevant articles and documents
HEMIACETALIC THAPSANE DERIVATIVES FROM THAPSIA VILLOSA VAR. MINOR
Teresa, Joaquin De Pascual,Moran, Joaquin R.,Fernandez, Alfonzo,Grande, Manuel
, p. 703 - 710 (1986)
The benzene extract from the roots of Thapsia villosa var. minor afforded six new sesquiterpene esters based on the thapsane skeleton for which the structure (1R,6R,8R,9R)-1,2,2,6,8,9-hexamethylbicyclononane is proposed.Five of these thapsane esters were hemiacetal derivatives esterified at C-1, C-3 or C-8 and the sixth is a dimeric acetal esterified at C-8.The structures of these substances were established on the basis of their spectral data and chemical behaviour, including their transformation into the same compound, 14,15-thapsanolide.Key Word Index- Thapsia villosa var. minor; Umbelliferae; hemiacetalic sesquiterpenes; 14,15-epoxythapsane esters.