Journal
PHYTOCHEMISTRY
Volume 180, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2020.112519
Keywords
Euphorbia gaditana Coss; Euphorbiaceae; Biosynthesis; Diterpene; Jatrophane; Gaditanane; [2+2] cycloaddition
Categories
Funding
- MINECO [RTI 2018-099908-BC22]
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The reaction mechanism of the intramolecular [2 + 2] cycloaddition from a jatrophane precursor to the gaditanane skeleton, an unprecedented 5/6/4/6-fused tetracyclic ring framework recently isolated from Euphorbia spp., was studied using the bond reactivity indices approach. Furthermore, six diterpenoids, including three undescribed jatrophanes isolated from E. gaditana Coss, were described. The structures of these compounds were deduced by a combination of 2D NMR spectroscopy and ECD data analysis.
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