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Action of Cr03/pyridine complex on ursolic acid-formation of 3-oxo- 11-en-138, 28-olide and 3, 11-dioxo-ursolic acid.
Author(s):
1. Salimuzzaman Siddiqui: HEJ Postgraduate Institute of Chemistry, University of Karachi, Karachi, Pakistan
2. Bina S. Siddiqui: HEJ Postgraduate Institute of Chemistry, University of Karachi, Karachi, Pakistan
3. Sabira Begum: HEJ Postgraduate Institute of Chemistry, University of Karachi, Karachi, Pakistan
4. Qayyum Adil: HEJ Postgraduate Institute of Chemistry, University of Karachi, Karachi, Pakistan
Abstract:
Ursolic acid on treatment with Cr03/pyridine complex at room temperature for 3 hours furnished 3-oxo-11en-1313, 28-olide (2) and 3, 11 -dioxoursolic acid (4) through allylic oxidation, along with the expected 3-oxo-derivative (3). This is the first report on the action of Cr03/pyridine on ursolic acid. The allylic oxidations with this reagent are also very rare and required a prolonged treatment in previous studies.
Page(s): 785-788
DOI: DOI not available
Published: Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 32, Issue: 12, Year: 1989
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