Publication Type Journal Article
Title 12,17-Cyclojatrophane and Jatrophane Constituents of Euphorbia welwitschiie
Authors Mariana A. Reis Vânia André M. Teresa Duarte Hermann Lage Maria-Jose U. Ferreira
Groups BioMol
Journal JOURNAL OF NATURAL PRODUCTS
Year 2015
Month November
Volume 78
Number 11
Pages 2684-2690
Abstract Euphowelwitschines A (1) and B (2), isolated from a methanolic extract of Euphorbia welwitschii, exhibit a rare combination of structural features in having a 5/8/8 fused-ring system and a 12,15-ether bridge. Moreover, the isolation of the additional new compounds welwitschene (3) and epoxywelwitschene (4) has provided insights into the biogenetic pathway of 12,17-cyclojatrophanes. The structures of 1-4 were determined by spectroscopic methods inclusive of 1D and 2D NMR experiments and X-ray crystallography for compounds 1 and 2. Preliminary information on the selective antiproliferative activity of compounds 1-4 is also described.
DOI http://dx.doi.org/10.1021/acs.jnatprod.5b00631
ISBN
Publisher AMER CHEMICAL SOC
Book Title
ISSN 0163-3864
EISSN 1520-6025
Conference Name
Bibtex ID ISI:000366005800022
Observations
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