Chemical transformation of protoberberines. XIII. A novel and efficient synthesis of antitumor benzo[c]phenanthridine alkaloids, nitidine and fagaronine.
Transformation of protoberberines into benzo[C]phenanthridines a novel and efficient synthesis of antitumor benzo[C]phenanthridine alkaloids, fagaronine and nitidine
Antileukemic benzo[C]phenanthridine alkaloids, fagaronine (1a) and nitidine (1c) were synthesized from the corresponding protoberberines through C6-N bond fission and subsequent cyclization between C6 and C13 position of the protoberberines.
由相应的原小ber碱通过C 6 -N键裂变以及随后在原小ber碱的C 6和C 13位置之间环化,合成了抗白血病的苯并[ C ]菲啶生物碱,黄花碱(1a)和可尼替丁(1c)。
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