experiments was investigated by application of the combined LC/NMR and LC/APCI-MS (/MS) techniques. Several metabolites were detected, and their structures (6 and 8-14) were identified. Bioconversion of the phenolic 1-benzyltetrahydroisoquinoline (2) into the pseudoprotoberberine (8) was demonstrated for the first time. LC/APCI-MS and LC/CD experiments carried out on a chiral column permitted the deduction
Thalifaurine and Dehydrodiscretine, New Quaternary Protoberberines from Thalictrum fauriei
作者:Chung-Hsiung Chen、Tzer-Ming Chen、Christine Lee
DOI:10.1002/jps.2600690920
日期:1980.9
Two newquaternaryprotoberberines, thalifaurine and dehydrodiscretine, were isolated from the ethanolic extract of Thalictrumfauriei Hayata. Based on spectral analysis and correlation with compounds of known structure, thalifaurine was shown to be 3-hydroxy-2-methoxy-10,11-methylenedioxyberbinium chloride and dehydrodiscretine was established as 3-hydroxy-2,20,11-trimethoxyberbinium chloride. The