作者:Xue-Mei Niu、Sheng-Hong Li、Li-Xin Wu、Ling Li、Li-Hui Gao、Han-Dong Sun
DOI:10.1055/s-2004-827164
日期:2004.6
Two new coumarins, 13-O-[β-D-apiofuranosyl(1→6)-β-D-glucopyranosyl]-(12R)-heraclenol (1) and (12R,12′′R)-diheraclenol (2) were isolated from the acetone extract of the fresh roots of Heracleum rapula. Their structures were determined by means of spectroscopic analysis and, in the case of compound 1, the structure elucidation was supported by acid hydrolysis. Compound 1 is a coumarin glycoside while 2 is a coumarin dimer. The inhibitory effects of 1, its aglycone (3), and 2 on rabbit platelet aggregation induced by PAF, AA and ADP were tested. Weak activities were observed for each compound with the percentages of inhibition in the range of 0.7 - 24.8 %.
两种新的香豆素,13-O-[β-D-apiofuranosyl(1→6)-β-D-glucopyranosyl]-(12R)-heraclenol (1) 和 (12R,12′′R)-diheraclenol (2) 是从Heracleum rapula 新鲜根的丙酮提取物中分离出来。它们的结构是通过光谱分析确定的,对于化合物 1,其结构阐明得到了酸水解的支持。化合物1是香豆素糖苷,而2是香豆素二聚体。检测1及其苷元(3)、2对PAF、AA、ADP诱导的兔血小板聚集的抑制作用。观察到每种化合物的活性较弱,抑制百分比在 0.7 - 24.8% 范围内。