作者:R.X. Tan、J.-L. Wolfender、L.X. Zhang、W.G. Ma、N. Fuzzati、A. Marston、K. Hostettmann
DOI:10.1016/0031-9422(96)00149-5
日期:1996.7
The new acid (2-methoxyanofinic acid), its methyl ester, kurarinone and kushenol I were shown to be active against the plant pathogenic fungus Cladosporium cucumerinum. The methyl ester and kurarinone inhibited also the growth of the human pathogenic yeast Candida albicans. Structure-activity relationships were studied. Thus, addition of a methoxyl group to the benzene nucleus of anofinic acid (2,2-
LC-UV-质谱法和生物测定法对大叶龙胆根的含水丙酮提取物进行共导向分馏,得到了三种新的色烯衍生物和两种新的和六种已知的二环环烯醚酮,以及苦力酮、苦参酚 I、β-谷甾醇、豆甾醇、豆蔻甾醇、β-谷甾醇-3-O-龙胆二糖苷、α-香树脂醇、齐墩果酸、异卵磷脂、龙胆二糖和2-羟基-3-(1-β-D-吡喃葡萄糖基)羟基苯甲酸甲酯。根据光谱和化学证据确定了新产品的结构为 2-甲氧基泛叶酸和大叶苷 AD。六种已知的类环烯醚萜苷是龙胆苦苷、猪脑苷、6'-O-β-D-葡糖基龙胆苦苷、6'-O-β-D-葡糖苷、三氟苷和灵多苷。新的酸(2-甲氧基链烷酸),它的甲酯,kurarinone 和 kushenol I 被证明对植物病原真菌 Cladosporium cucumerinum 具有活性。甲酯和 kurarinone 也抑制人类致病酵母白色念珠菌的生长。研究了构效关系。因此,在苯甲酸(2,2-二甲基-2H-