2 resultados para Biondia insignis
em Chinese Academy of Sciences Institutional Repositories Grid Portal
Resumo:
本实验对三种萝藦科植物通光散(Marsdenia tenacissima)、黑水藤(Biondia insignis Tsiang)和徐长卿(Cynanchum Paniculatum)中的C21甾体化合物进行了研究。从通光散藤茎乙酸乙酯提取物的水解产物中,分离得到两类八个C21甾类甙元。经光谱鉴定,它们的结构分别为11α-O-(2-甲基)-丁酰基-12β-O-顺芷酰通光藤甙元乙(1),11α-O-乙酰基-12β-O-乙酰基通光藤甙元乙(2),11α-O-(2-甲基)-丁酰基-12β-O-乙酰基通光藤甙元乙(3), 11α-O-苯甲酰基-12β-O-乙酰基通光藤甙元乙(4), 11α-O-顺芷酰基-12β-O-乙酰基通光藤甙元乙(5)11α-O-顺芷酰基-12β-O-顺芷酰基通光藤甙元乙(6),12β-O-乙酰基通光藤甙元甲(7)和12β-O-顺芷酰基通光藤甙元甲(8)。其中,化合物2和8为新化合物。从黑水藤乙醇提取物的水解产物中,分离得到了两个C21甾体化合物。经1D、2D NMR技术鉴定,分别为(3β,14β,15β,17β)-3, 14-二羟基-15,16-裂-孕甾-5-烯-15-醛-16-半缩醛-20-酮(1)和白前甙元C(2)。其中1为15,16-裂环的新骨架类型的C21甾体化合物,命名为黑水藤甙元甲。从采购于昆明、浙江、湖南三地药材市场的徐长卿的根及根茎中,分离得到了18个化合物(其中昆明徐长卿6个,浙江徐长卿9个,湖南徐长卿3个)。经光谱数据分析,这些化合物被鉴定为:cynapanoside-C (1), cynapanoside-A (2), 白前甙元B 3-O-β-D-磁嘛吡喃糖甙(3),白前甙元C 3-O-β-D-葡萄吡喃糖基-(1 → 4)-α-L-2-脱氧洋地黄吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-夹竹吡喃糖甙(4),白前甙元C3-O-β-D-葡萄吡喃糖基-(1 → 4)-α-D-夹竹桃吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-夹竹桃吡喃糖甙(5),白前甙元C 3-O-β-D-葡萄吡喃糖基-(1 → 4)-β-D-葡萄吡喃糖基-(1 → 4)-α-D-夹竹桃吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-夹竹桃吡喃糖甙(6),cynatratoside-B (7),cynatratoside-C (8);glaucoside A(9),新白薇甙元B 3-O-β-L-磁嘛吡喃糖基-(1 → 4)-β-D-洋黄吡喃糖基-(1 → 4)-β-D-夹竹桃吡喃糖甙(10),白前甙元 A 3-O-α-L-磁嘛吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(11),白前甙元 B 3-O-α-L-磁糖基吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(12),白前甙元D 3-O-α-L-磁嘛吡喃糖基(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(13),白前甙元 C 3-O-β-D-葡萄吡喃糖基-(1 → 4)-β-D-葡萄吡喃糖基-(1 → 4)-α-L-2-脱氧洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖基-(1 → 4)-β-D-夹竹桃吡喃糖甙(14),白前甙元 C 3-O-β-D-葡萄吡喃糖基-(1 → 4)-β-D-葡萄吡喃糖基-(1 → 4)-α-L-磁嘛吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-夹竹桃吡喃糖甙(15),白前甙元 B 3-O-α-D-夹竹桃吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(16),白前甙元 D 3-O-α-D-夹竹桃吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(17),白前甙元月B 3-O-α-L-磁嘛吡喃糖基-(1 → 4)-β-D-洋地黄吡喃糖基-(1 → 4)-β-D-磁嘛吡喃糖甙(18)。其中,化合物3-6,10-18为新化合物,10的甙元为一个新甙元,命名为新白薇甙无B。