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Selective Oxidation of Betulin by Cr(VI) Reagents |
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| Authors: | N. G. Komissarova N. G. Belenkova L. V. Spirikhin O. V. Shitikova M. S. Yunusov |
| Affiliation: | (1) Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences, 450054 Ufa, pr. Oktyabrya 71 |
| Abstract: | Oxidation of betulin by pyridinium dichromate, pyridinium chlorochromate, and K2Cr2O7 -H2SO4 in the presence of tetrabutylammonium bromide was studied. Products of regioselective C-3, C-28-, and exhaustive oxidation, 28-hydroxylup-20(29)-3-one, 3 -hydroxy- and 3-oxolup-20(29)-en-28-al were obtained. |
| Keywords: | betulin selective oxidation pyridinium chlorochromate pyridinium dichromate potassium bichromate synthesis 28-hydroxylup-20(29)-3-one 3 |
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