Structure and Synthesis of a New Monoterpenoidal Carboxamide from the Seeds of the Thai Medicinal Plant Acacia concinna.
作者:Toshikazu SEKINE、Nobuaki FUKASAWA、Fumio IKEGAMI、Kazuki SAITO、Yuichi FUJII、Isamu MURAKOSHI
DOI:10.1248/cpb.45.148
日期:——
A new monoterpenoidal carboxamide, concinnamide (1), has been isolated from the seeds of a Thai medicinal plant, Acacia concinna DC. (Leguminosae). Its structure has been revised to (E)-2, 6-dimethyl-6-hydroxy-2, 7-octadienamide by detailed spectroscopic and synthetic studies, though it had been preliminarily assigned as a seven-membered lactam derivative by our previous work. (-)-Concinnamide, (-)-1, was synthesized from (-)-linalool (2) by stepwise oxidation, followed by amidation to confirm the structure. The inhibitory effects of 1 and related compounds on the arachidonate 5-lipoxygenase of RBL-1 cells are also described.
从泰国药用植物 Acacia concinna DC 的种子中分离出一种新的单萜甲酰胺,即 concinnamide (1)。 (豆科)。尽管我们之前的工作初步将其确定为七元内酰胺衍生物,但通过详细的光谱和合成研究,其结构已被修改为(E)-2,6-二甲基-6-羟基-2,7-辛二烯酰胺。 (-)-肉桂酰胺,(-)-1,由(-)-芳樟醇(2)通过逐步氧化合成,然后酰胺化以确认结构。还描述了1和相关化合物对RBL-1细胞的花生四烯酸5-脂氧合酶的抑制作用。