Anti-complement Activity of Constituents from the Stem-Bark of Juglans mandshurica
作者:Byung-Sun Min、Sun-Young Lee、Jung-Hee Kim、Joong-Ku Lee、Tae-Jin Kim、Dong-Hee Kim、Young-Ho Kim、Hyouk Joung、Hyeong-Kyu Lee、Norio Nakamura、Hirotsugu Miyashiro、Masao Hattori
DOI:10.1248/bpb.26.1042
日期:——
Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-tetragalloylglucose (6), were evaluated for their anti-complement activity against complement system. Afzelin (2) and quercitrin (3) showed inhibitory activity against complement
从胡桃科(Juglandaceae)的茎皮中分离出四个已知的类黄酮和两个没食子酰基葡萄糖,分别是taxefolin(1),afzelin(2),quercitrin(3),杨梅苷(4),1,2,6-三没糖基葡萄糖(5) )和1,2,3,6-四没食子酰基葡萄糖(6)评估了它们对补体系统的抗补体活性。Afzelin(2)和queccitrin(3)对补体系统表现出抑制活性,其50%抑制浓度(IC(50))值为258和440 microM。1,2,6-Trigalloylglucose(5)和1,2,3,6-tetragalloylglucose(6)表现出抗补体活性,IC(50)值为136和34 microM。关于3,5,7-三羟基黄酮的构效关系的评价,将化合物2、3和4用柚皮苷酶水解,得到山奈酚(2a),槲皮素(3a)和杨梅素(4a)。糖苷配基,并且还测试了它们的抗补体活性。在这三种糖苷配基