ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The treatment of drevogenin P with isovaleryl chloride in pyridine gave an amorphous 3,12-di-O-isovaleryl-drevogenin P (4), which, on energetic acetylation, was converted into 3-O-isovaleryl-drevogenin A (5). This could be isolated in crystalline form and was converted through mild alkaline hydrolysis into drevogenin A. Hence drevogenin A could be classified as 11-O-acetyl-12-O-isovaleryl-drevogenin P. Indirectly, the structure of drevogenin B could be deduced to be most probably that of 11α-mono-O-acetyl-drevogenin P. Some details of the earlier given structures [1] are corrected here. Drevogenin D has an 11α-hydroxyl group.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19660490526