Pregnenolone (1), coniferylferulate (2) and nine mono-and dihydroxyphthalide derivatives (5-13) were isolated from the commercial C. officinale rhizome. Their structures were determined from the spectroscopic data and the dihydroxyphthalides senkyunolide-H (11) and-I (12) and senkyunolide-J (13) were synthesized from the major components ligustilide (14) and senkyunolide-A (16), respectively. These oxygenated phthalides were absent in the fresh C. officinale rhizome and they were shown to be derived from the major volatile phthalides during storage of the crude drug. Coniferylferulate (2) also decomposes partly during storage, giving ferulic acid.
从市售的当归根茎中分离得到娠烯醇酮(1)、
松柏苷(2)和9个单羟基和二羟基
苯酞衍
生物(5-13)。通过光谱数据确定了它们的结构,其中二羟基
苯酞素芹子醇-H(11)、-I(12)和芹子醇-J(13)分别由主要成分
藁本内酯(14)和芹子醇-A(16)合成得到。这些氧化的
苯酞在新鲜的当归根茎中不存在,它们是在药材储存过程中由主要挥发性
苯酞衍生而来。
松柏苷(2)在储存过程中也部分分解为
阿魏酸。