Photomediated Transformation of Salannin, a Tetranortriterpenoid from Azadirachta indica A. Juss
| Autor: | V. Kasinath, N. D. Pradeep Singh, Geetha Gopalakrishnan |
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| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Molecules, Vol 6, Iss 6, Pp 551-556 (2001) |
| Druh dokumentu: | article |
| ISSN: | 60600551 1420-3049 |
| DOI: | 10.3390/60600551 |
| Popis: | Photolysis of Salannin (1), an important bioactive compound from Azadirachta indica A.Juss (Neem), affords Δ17-isosalanninolide (2), a hitherto unknown compound, along with isosalanninolide (3) and salanninolide (4). A probable mechanism has been suggested. While the mechanism of formation of 2 involves both a [4+2] cycloaddition and a [1,3] sigmatropic shift in the furan and D-rings, respectively, formation of 3 and 4 involves the decomposition of an ozonoide-like peroxide intermediate. |
| Databáze: | Directory of Open Access Journals |
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