Utilization of Protopine and Related Alkaloids. III. Acid Catalyzed Cyclization of Anhydromethylberberine. The Revised Structures for Hydroxyisoanhydrodihydromethyl-berberine and Isoanhydromethylberberine
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When anhydromethylberberine derived from α-allocryptopine was treated with dilute hydrochloric acid, it gave three products, whose structures were identified to contain the spiro-type skelton instead of"Perkin's compound"by the nuclear magnetic resonance spectroscopy.
- 社団法人 日本薬学会の論文
社団法人 日本薬学会 | 論文
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