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1. Chemoselective oxidation of oleanolic acid derivatives with ozone.

Author

Kazakova, O. B., Medvedeva, N. I., Kukovinets, O. S., Tolstikov, G. A., Khusnutdinova, E. F., Zaprutko, L., Bednarczyk-Cwynar, B., and Paryzek, Z.

Subjects
OXIDATION, ESTERS, OZONE, OZONOLYSIS, CARBOXYLIC acids
Abstract

A method for preparing methyl esters of 12-oxoolean-28-oic and 3,12-dioxoolean-28-oic acids via ozonolysis of oleanolic acid methyl ester in CH2Cl2 at –60°C was proposed. It was found that oxidation of 2-cyano3,4-seco-4(23)-oleanenoic acid was chemoselective depending on the amount of ozone used. [ABSTRACT FROM AUTHOR]

Published
2010
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