were synthesised by application of the cyclisation reaction of β-phenylethyl isocyanate to N-methylisoquinoline lactam with Magic Methyl and the regioselective cleavage reaction of aromatic methoxyl groups with methionine and methanesulphonic acid.
异喹啉生物碱、thalifoline、corypalline 和cherylline 是通过β-苯乙基
异氰酸酯与Magic Methyl 的环化反应生成N-甲基
异喹啉内酰胺以及芳香甲氧基与甲
硫氨酸和
甲磺酸的区域选择性裂解反应合成的。