Deoxyemmolactone, a new A(1), 28-bisnor-lupane triterpene

Abstract
A new member of the A-nor-lupane group of triterpenes has been isolated from Alangium villosum(Bl.) Wang. var. vitiense(A. Gray) Bloemb. and Emmenospermum alphitonioides F. Muell. and shown to be either 22-deoxyemmolactone (1) or its Δ17(22)-isomer (2).

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