Sequential bicyclization of biphenyl acetamides promoted by (COCl)2/SnCl4. Total synthesis of 4,5-dioxoaporphines
作者:Rafael Suau、Juan Manuel López-Romero、Rodrigo Rico
DOI:10.1016/s0040-4020(97)00923-x
日期:1997.10
The reaction of biphenyl acetamides with excess of oxalyl chloride/stannyl chloride offers a one pot, high-yield entry to 4,5-dioxoaporphine alkaloids. This strategy has been applied to the synthesis of 4,5-dioxodehydrocorydine starting from 1-iodo-2,3-dimethoxybenzene. The cytotoxicity of tetraoxygenated 4,5-dioxoaporphines has been evaluated. (C) 1997 Elsevier Science Ltd.