The alkaloids (±)-nitramine (1) and (±)-isonitramine (2) have been synthesised, employing an intramolecular Mannich reaction to set up the spirocyclic ring system.
采用分子内曼尼希反应建立螺环系统,合成了生物碱 (±)-硝胺 (1) 和 (±)-异硝胺 (2)。
Carruthers, William; Moses, Roger C., Journal of the Chemical Society. Perkin transactions I, 1988, p. 1625 - 1628