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Efficient synthesis of the C/D rings of atisine-type C20-diterpenoid alkaloids

โœ Scribed by Chen, De Lin; Wang, Feng Peng

Book ID
118428009
Publisher
Chinese Electronic Periodical Services
Year
2012
Tongue
English
Weight
239 KB
Volume
23
Category
Article
ISSN
1001-8417

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Atisine (l), an alkaloid of Aconitum heterophyllum Wall, is usually isolated' as the salt, atisinium chloride (2), and can be regenerated from this salt by treatment with strong base. Atisine is a very strong base (pKa 12.8) that may be isamerized easily to isoatisine (3) (pKa 10.3) by refluxing in