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Diterpenoids from Humirianthera ampla
I B Graebner1, M A Mostardeiro, E M Ethur
1Departamento de Química (NPPN), Universidade Federal de Santa Maria, RS, Brazil.
Phytochemistry
|May 23, 2000
Abstract:
Two diterpenoids, humirianthol and acrenol, as well as the known annonalide, were isolated from Humirianthera ampla. Humirianthol and acrenol were determined by 1D and 2D NMR spectroscopic techniques to be 3 beta,20:14 beta,16-diepoxy-3 alpha, 15 alpha-dihydroxy-7-pimaren-19,6 beta-olide and 3 beta,20-epoxy-3 alpha,15,16-trihydroxy-7-pimaren-19,6 beta-olide, respectively.