A new bakkenolide-type compound, bakkenolide-Va（1）, was isolated from the rhizome of Petasites tricholobus. The structure was characterized on the basis of various NMR （1H, 13C, 1H-1H COSY, HMQC, HMBC and NOESY） a...A new bakkenolide-type compound, bakkenolide-Va（1）, was isolated from the rhizome of Petasites tricholobus. The structure was characterized on the basis of various NMR （1H, 13C, 1H-1H COSY, HMQC, HMBC and NOESY） and mass spectrometry data. The neuroprotective activity of bakkenolide-Va was investigated in primarily cultured neurons treated by hypoxia-ghicose deprivation and various types of oxidative insults.展开更多
A novel triterpenoid, D:B-friedoursane-3α, 16α-dihydroxy-7α, 8α-epoxy-5(10)-ene, named petatrichol A, was isolated from the roots of Petasites tricholobus Franch.. Its structure was elucidated by spectroscopic met...A novel triterpenoid, D:B-friedoursane-3α, 16α-dihydroxy-7α, 8α-epoxy-5(10)-ene, named petatrichol A, was isolated from the roots of Petasites tricholobus Franch.. Its structure was elucidated by spectroscopic methods, especially 2DNMR techniques.展开更多
A novel pentacyclic triterpenoid, petatrichol B, was isolated from the rhizome of Petasites tricholobus. Its structure was established by means of spectroscopic analysis （EIMS, HRSIMS, IR, 1D NMR and 2D NMR）.
目的:研究毛裂蜂斗菜中抗炎、抗氧化作用机制,对该植物中酚类化学成分进行研究。方法:采用大孔树脂,硅胶,MCI GEL CHP20P,ODS以及Sephadex LH-20等柱色谱方法进行分离和纯化,通过理化性质和多种波谱数据鉴定化合物的结构。结果:从毛裂...目的:研究毛裂蜂斗菜中抗炎、抗氧化作用机制,对该植物中酚类化学成分进行研究。方法:采用大孔树脂,硅胶,MCI GEL CHP20P,ODS以及Sephadex LH-20等柱色谱方法进行分离和纯化,通过理化性质和多种波谱数据鉴定化合物的结构。结果:从毛裂蜂斗菜95%乙醇提取物中分离得到19个酚类化合物,包括磺酸化苯甲基葡萄糖苷(1),3-(4β-D-葡萄糖苷-3,5-甲氧基)-苯基-2E-丙烯醇(2),二氢丁香苷(3),党参苷Ⅱ(4),4-羟基-2,6-甲氧基苯酚-1-O-β-D-葡萄糖苷(5),4-羟甲基-2,6-甲氧基苯酚-1-O-β-D-葡萄糖苷(6),熊果苷(7),芦丁(8),山柰酚-3-O-α-L-吡喃鼠李糖基-(1→6)-β-D-葡萄糖苷(9),槲皮素-3-O-β-D-葡萄糖苷(10),山柰酚-3-O-β-D-葡萄糖苷(11),山柰酚-3-O-α-鼠李糖苷(12),petasiphenol(13),咖啡酸(14),绿原酸(15),2-羟基-5-乙酰基苯甲酸(16),对羟基苯甲酸(17),原儿茶醛(18),对羟基苯丙酸(19)。结论:上述研究表明,毛裂蜂斗菜中的酚类化合物主要包括简单酚及其苷类化合物、咖啡酸类以及黄酮苷类化合物。其中化合物1为首次从菊科植物中分离得到,化合物2～7,9,11～12,16,19均为首次从蜂斗菜属植物中分离得到,其余化合物为首次从该植物中分离得到。其中大量化合物已经被证明具有消炎、抗菌、抗氧化等药理作用。展开更多
文摘A new bakkenolide-type compound, bakkenolide-Va（1）, was isolated from the rhizome of Petasites tricholobus. The structure was characterized on the basis of various NMR （1H, 13C, 1H-1H COSY, HMQC, HMBC and NOESY） and mass spectrometry data. The neuroprotective activity of bakkenolide-Va was investigated in primarily cultured neurons treated by hypoxia-ghicose deprivation and various types of oxidative insults.
基金This project was suppoaed by the NNSFC(No．2997201)
文摘A novel triterpenoid, D:B-friedoursane-3α, 16α-dihydroxy-7α, 8α-epoxy-5(10)-ene, named petatrichol A, was isolated from the roots of Petasites tricholobus Franch.. Its structure was elucidated by spectroscopic methods, especially 2DNMR techniques.
基金This work was financed by the National Natural Science Foundation of China(No．29972017)
文摘A novel pentacyclic triterpenoid, petatrichol B, was isolated from the rhizome of Petasites tricholobus. Its structure was established by means of spectroscopic analysis （EIMS, HRSIMS, IR, 1D NMR and 2D NMR）.
文摘目的:研究毛裂蜂斗菜中抗炎、抗氧化作用机制,对该植物中酚类化学成分进行研究。方法:采用大孔树脂,硅胶,MCI GEL CHP20P,ODS以及Sephadex LH-20等柱色谱方法进行分离和纯化,通过理化性质和多种波谱数据鉴定化合物的结构。结果:从毛裂蜂斗菜95%乙醇提取物中分离得到19个酚类化合物,包括磺酸化苯甲基葡萄糖苷(1),3-(4β-D-葡萄糖苷-3,5-甲氧基)-苯基-2E-丙烯醇(2),二氢丁香苷(3),党参苷Ⅱ(4),4-羟基-2,6-甲氧基苯酚-1-O-β-D-葡萄糖苷(5),4-羟甲基-2,6-甲氧基苯酚-1-O-β-D-葡萄糖苷(6),熊果苷(7),芦丁(8),山柰酚-3-O-α-L-吡喃鼠李糖基-(1→6)-β-D-葡萄糖苷(9),槲皮素-3-O-β-D-葡萄糖苷(10),山柰酚-3-O-β-D-葡萄糖苷(11),山柰酚-3-O-α-鼠李糖苷(12),petasiphenol(13),咖啡酸(14),绿原酸(15),2-羟基-5-乙酰基苯甲酸(16),对羟基苯甲酸(17),原儿茶醛(18),对羟基苯丙酸(19)。结论:上述研究表明,毛裂蜂斗菜中的酚类化合物主要包括简单酚及其苷类化合物、咖啡酸类以及黄酮苷类化合物。其中化合物1为首次从菊科植物中分离得到,化合物2～7,9,11～12,16,19均为首次从蜂斗菜属植物中分离得到,其余化合物为首次从该植物中分离得到。其中大量化合物已经被证明具有消炎、抗菌、抗氧化等药理作用。
