Oxidation of benzoylcalycanthine (VI), yielded calycanine (III). Prolonged action of dil. HCl on calycanthine afforded an intermediate product VII, which gave 3-(2′-benzoylaminophenyl)-1-methyl-2-pyrroline (VIII) on benzoylation followed by pyrolysis. Dinitroso-calycanthine (IX) was converted into its diazonium salt by treatment with cold 4N HCl, and the latter underwent azocoupling reactions with
氧化苯甲酰基花
氨酸(VI),得到花碱(III)。莳萝的作用时间长。
盐酸在
花青素上提供中间体产物VII,其在苯甲酰化后通过热解得到3-(2'-苯甲酰基
氨基苯基)-1-甲基-2-
吡咯啉(VIII)。用冷的4N HCl处理将二亚硝基花
氨酸(IX)转化为其重氮盐,然后使后者与
酚进行偶氮偶联反应。