nornarcotine and 5-bromonornarcotine, synthesized from noscapine, with suitable aromatic isocyanates or isothiocyanates provides a general method for the synthesis of aryl-substituted N-carbamoyl or N-thiocarbamoylnarcotine and related compounds. Similarly, 15a has been prepared via the reduction of the lactone ring moiety of noscapine. Also, an improved procedure, which utilizes narcotine N-oxide⋅HCl
由去甲
烟碱合成的去甲可丁和5-
溴去甲可丁与合适的芳族
异氰酸酯或异
硫氰酸酯的反应提供了合成芳基取代的N-
氨基甲酰基或N-
硫代
氨基甲酰基
那可丁和相关化合物的通用方法。类似地,通过还原诺斯卡品的内酯环部分制备了 15a。此外,还描述了一种改进的程序,该程序利用
那可汀 N-氧化物·HCl 生成去甲可汀。