In:
Canadian Journal of Chemistry, Canadian Science Publishing, Vol. 59, No. 9 ( 1981-05-01), p. 1328-1330
Abstract:
The 13 C nmr spectra of some 23-hydroxy spirostane sapogenins from Solanum hispidum Pers., mostly as their acetates, have been studied. The effect of different orientations of the substituents at C-23 and C-25 as well as that due to change in the stereochemistry at C-22 have been discussed. The unexpected absence of the γ g effect of the axial 23-OH on C-25 in hispigenin (5), a 22βO-spirostane derivative, presumably results from ring F deformation brought about by the steric interaction between 20-Me and 23-OH groups.
Type of Medium:
Online Resource
ISSN:
0008-4042
,
1480-3291
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1981
detail.hit.zdb_id:
1482256-8
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