Semisynthesis and acetylcholinesterase inhibitory activity of stemofoline alkaloids and analogues
Semisynthesis of the known Stemona alkaloids oxystemofoline (7) and methoxystemofoline (8) has been achieved starting from (11Z)-1′,2′- didehydrostemofoline (6), which confirmed their structures and absolute configurations. The synthesis of (1′R)-hydroxystemofoline (9) helped establish this compound...
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| Main Authors: | , , , , , |
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| Format: | Journal |
| Published: |
2017
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| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77952982010&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43299 |
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| Institution: | Chiang Mai University |
| Summary: | Semisynthesis of the known Stemona alkaloids oxystemofoline (7) and methoxystemofoline (8) has been achieved starting from (11Z)-1′,2′- didehydrostemofoline (6), which confirmed their structures and absolute configurations. The synthesis of (1′R)-hydroxystemofoline (9) helped establish this compound as a natural product from Stemona aphylla. (1′S)-Hydroxystemofoline (10) and a number of related analogues were also prepared. In a TLC bioautographic assay, 9 was found to be the most active acetylcholinesterase inhibitor, but it was not as active as galanthamine. © 2010 The American Chemical Society and American Society of Pharmacognosy. |
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