Stereospecific oxidation of diacetoxyheterobetulin with ozone and dimethyldioxirane
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ID: 238189
2016
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Abstract
Stereospecific oxidation of diacetoxyheterobetulin with ozone and dimethyldioxirane led to 3β,28-diacetoxy-18α,19βH-urs-20α,21α-epoxide with yields of 79% and 87%, respectively. Oxidation with ozone was not selective and gave two minor products containing 2lα-hydroxy-20(30)-ene and 21a-hydroxy-20β,28-epoxy-fragments in ring E. The structures of 3β,28-diacetoxy-18α,19βH-urs-20α,21α-epoxide and 3β-diacetoxy-21α-hydroxy-20β,28-epoxy-18α,19βH-ursane were confirmed by X-ray analysis for the first time.
| Reference Key |
khusnutdinova2016stereospecificnatural
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|---|---|
| Authors | Khusnutdinova, E.F. |
| Journal | Natural product communications |
| Year | 2016 |
| DOI |
10.1177/1934578x1601100407
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| URL | |
| Keywords | Keywords not found |
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