【摘 要】
：
从贯叶连翘( Hypericum perforatum L.)地上部分的80%乙醇提取物中分离得到1个新的黄酮苷和6个已知黄酮类化合物.采用红外光谱、紫外光谱、质谱和核磁共振光谱等波谱技术测得
【机 构】
：
南京师范大学江苏省资源生物技术重点实验室,南京大学功能生物分子研究所
论文部分内容阅读
从贯叶连翘( Hypericum perforatum L.)地上部分的80%乙醇提取物中分离得到1个新的黄酮苷和6个已知黄酮类化合物.采用红外光谱、紫外光谱、质谱和核磁共振光谱等波谱技术测得新黄酮苷的结构为6″-O-乙酰基槲皮素-3-O-β- D -阿洛糖苷(1,6″-O-acetyl quercetin 3-O-β- D -alloside),6个已知化合物分别被鉴定为槲皮苷(quercitrin)、金丝桃苷(hyperoside)、蓄苷(avicularin)、芦丁(rutin)、槲皮素(quercetin)和山萘酚(kaemferol).体外抗真菌活性实验表明,新黄酮苷(1)、槲皮苷和槲皮素对植物病原菌 Helminthosporium sativum Pamel King et Bakke具有一定的抑制作用,三者的最小抑制浓度(MIC)分别为:25、50和50 μg/mL.另外,1和槲皮苷对禾赤色镰孢霉( Fusarium graminearum Schw.)的生长也有抑制作用(MIC值均为100 μg/mL).
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