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Preparation and circular dichroism studies of triterpene lactones of lupane series

✍ Scribed by Gopal Dutta; Samarendra N. Bose

Publisher: Elsevier Science
Year: 1988
Tongue: French
Weight: 250 KB
Volume: 29
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)82198-x

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✦ Synopsis

The authentic triterpene lactones 3 and LO_ of the lupane series were obtained by a chemical degradative sequence frn betulinic acid. Canparison of CD spectra of 2 and LQ with those of the lactones 2% and Il_a_ provided additional evidence for their revised formulation.

Acetyl betulinic acid on mercuric acetate oxi,dation gave a tertiary _6-lactone which, initially assigned C-23, 13-Lactone structure1 1, has been revised2

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