program for antifilarial agents from Indian medicinal plants, the roots of G. glabra were chemically investigated, which resulted in the isolation and characterization of an antifilarial agent, glycyrrhetinic acid (GA, 1a) effective against microfilariae (mf) in vitro (LC100: 12.5 μM; IC50: 1.20 μM), but was inactive against adult worms. Further, GA (1a) was converted into six analogs (2a–7a) and their antifilarial
尽管已从甘草中分离出许多化学物质,但仅对其化学意义进行了评估。作为我们从印度药用植物获得的抗丝虫剂药物发现计划的一部分,化学研究了G. glabra的根,从而分离并鉴定了对微丝aria虫(mf)有效的抗丝虫剂甘草次酸(GA,1a)。体外(LC100:12.5μM; IC 50:1.20μM ),但对成虫无活性。此外,GA(1a)被转化为六个类似物(2a – 7a)及其抗丝氨酸潜力进行了研究,通过研究利用MF和成虫的马来蝇(Brugia malayi)的体外活力和MTT降低试验。结果表明,在6种GA类似物中,苄基酰胺类似物(6a)分别杀死了25和50μM浓度的成虫和mf,并抑制了49%的成虫寄生虫MTT还原潜力。发现成人和mf的IC 50值分别为8.8和2.2μM。化合物的SI> 60。另一方面,辛酰胺类似物(7a)需要更高的浓度才能对寄生虫产生不利影响。最后,使用马来芽孢杆菌在体内评估了两