Author： Flekhter O. B. Ashavina O. Yu. Smirnova I. E. Baltina L. A. Galin F. Z. Kabal'nova N. N. Tolstikov G. A.
Publisher： Springer Publishing Company
ISSN： 0009-3130
Source： Chemistry of Natural Compounds, Vol.40, Iss.2, 2004-03, pp. : 141-143
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Abstract
3-Oxo-triterpenoids were prepared by oxidation of the methyl esters of glycyrrhetic acid, allobetulin, and 20-oxo-29-nor-betulin with sodium hypochlorite in acetic acid or methylene chloride under phase-transfer conditions.
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