A new pyridone alkaloid, cerpegin, was synthesized in five steps starting from the Michael reaction between phenylthioacetonitrile and 2-methoxycarbonyl-4-methyl-2-penten-4-olide. Catalytic hydrogenation of a nitrile group in the presence of a conjugated carbon-carbon double bond was performed by addition of 1 eq of concentrated HCl.
一种新的
吡啶酮
生物碱——cerpegin,通过五个步骤合成,起始于苯基
硫代
乙腈与2-甲氧基羧基-4-甲基-
2-戊烯-4-内酯之间的迈克尔反应。在共轭碳-碳双键存在的情况下,采用添加1当量浓
盐酸对含
氰基进行催化氢化反应。