Synthesis of Homoprotoberberines and 8-Oxoprotoberberines by Sequential Bicyclization of Phenylacetamides
作者:Rafael Suau、Juan Manuel López-Romero、Antonio Ruiz、Rodrigo Rico
DOI:10.1016/s0040-4020(99)01084-4
日期:2000.2
The reaction of phenylacetamides with oxalyl chloride/Lewis acid provides a convergent, high-yield entry to C-homoprotoberberine and 8-oxoprotoberberine alkaloids from available starting materials. This approach was used to synthesize 8-oxopseudopalmatine starting from N-[β-(3′,4′-dimethoxyphenyl)ethyl]-3,4-dimethoxyphenylacetamide. Some C-homoprotoberberines exhibit significant cytotoxicity against
苯乙酰胺与草酰氯/路易斯酸的反应提供了从可用起始原料到C-高伯小ber碱和8-氧伯小o碱生物碱的收敛,高收率的入口。该方法用于从N- [β-(3',4'-二甲氧基苯基)乙基] -3,4-二甲氧基苯基乙酰胺开始合成8-氧代伪巴马汀。一些C-同型小ber碱对人乳腺癌细胞显示出显着的细胞毒性。