Author:
Hensens OD,Khong PW,Lewis KG
Abstract
Re-examination of the reactions of primulagenin
A, longispinogenin
and chichipegenin with acetone has shown that isopropylidene derivatives may be obtained in all cases.
With chichipegenin two of the three possible isomeric
isopropylidene derivatives were isolated. The effect
of alteration of the conformation of ring v by the introduction of a Δ13(18) double bond on
the ease of formation of the 1,3-dioxan ring has been examined in the case of
the 3β,16α,28-triol system.
Cited by
4 articles.
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