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苯甲基异喹啉类生物碱大部分以同型二聚体双苯甲基异喹啉生物碱的形式分布在自然界中;少数以杂二聚体的形式存在,其分子中的不同单聚体由苯甲基异喹啉经生物合成而得到,并且大多数在苯基和(或)二苯甲氧基上有3个接合位置,其中以阿扑菲碱核与苯甲基异喹啉核构成的类型最多,而呵扑菲碱-耙碱型、耙碱-苯甲基异喹啉型、枯拉灵-吗啡烷型生物碱较
Most of the benzylisoquinoline alkaloids are distributed in nature in the form of homodimer bis-benzylisoquinoline alkaloids; a few exist in the form of heterodimers, and different monomers in their molecules Derivatives from benzylisoquinolines are biosynthesized, and most of them have 3 bonding sites on phenyl and (or) diphenylmethoxy groups, among which are azathiophene nucleus and benzylisoquinoline nucleus. The type of composition is the most, and the oxafinoline-anthraquinone type, the osmium base-benzylisoquinoline type, and the ramatin-morphinane type alkaloids are the most common types.