目的分离、鉴定毛金竹（Phyllostachys nigra（Lodd．exLindl．）Munro var．henonis（Mitf．）Stepf ex Rendle）竹叶提取物的化学成分。方法采用反复硅胶柱色谱、SephadexLH-20柱色谱、开放ODS柱色谱、制备薄层色谱等方法进行分离纯...目的分离、鉴定毛金竹（Phyllostachys nigra（Lodd．exLindl．）Munro var．henonis（Mitf．）Stepf ex Rendle）竹叶提取物的化学成分。方法采用反复硅胶柱色谱、SephadexLH-20柱色谱、开放ODS柱色谱、制备薄层色谱等方法进行分离纯化，并通过理化性质和光谱数据鉴定其化学结构。结果从其乙酸乙酯萃取层和正丁醇萃取层分离得到12个化合物，分别鉴定为β-谷甾醇（β—sitosterol，1）、苜蓿素（tricin，2）、胡萝卜苷（daucosterol，3）、丁二酸（butanedioicacid，4）、胸腺嘧啶（5-methyluracil，5）、苜蓿素-7—O-β-D-葡萄糖苷（tricin-7-O-β-D—glucopyranoside，6）、牡荆苷（vitexin，7）、苜蓿素-7-O-新橙皮糖苷（tricin-7—O-neohesperidoside，8）、荭草苷（orientin，9）、异荭草苷（isoorientin，10）、尿嘧啶（uracil，11）、胸腺嘧啶脱氧核苷（thymidine，12）。结论化合物4～6、8、11、12为首次从该属植物中分离得到。展开更多
The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the t...The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the three extracts had strong antioxidant activity.Crude extract was higher than the portion extracted by n-butanol.The antioxidant effective positions of the aqueous portion were further tested qualitatively and found to be probably tannin and δ-OH-Lys etc.From the above,we can draw the following conclusion:the extract of bamboo leaves was a complex and synergistic mixture.It was no effective on antioxidant activity to purify further.展开更多
文摘目的分离、鉴定毛金竹（Phyllostachys nigra（Lodd．exLindl．）Munro var．henonis（Mitf．）Stepf ex Rendle）竹叶提取物的化学成分。方法采用反复硅胶柱色谱、SephadexLH-20柱色谱、开放ODS柱色谱、制备薄层色谱等方法进行分离纯化，并通过理化性质和光谱数据鉴定其化学结构。结果从其乙酸乙酯萃取层和正丁醇萃取层分离得到12个化合物，分别鉴定为β-谷甾醇（β—sitosterol，1）、苜蓿素（tricin，2）、胡萝卜苷（daucosterol，3）、丁二酸（butanedioicacid，4）、胸腺嘧啶（5-methyluracil，5）、苜蓿素-7—O-β-D-葡萄糖苷（tricin-7-O-β-D—glucopyranoside，6）、牡荆苷（vitexin，7）、苜蓿素-7-O-新橙皮糖苷（tricin-7—O-neohesperidoside，8）、荭草苷（orientin，9）、异荭草苷（isoorientin，10）、尿嘧啶（uracil，11）、胸腺嘧啶脱氧核苷（thymidine，12）。结论化合物4～6、8、11、12为首次从该属植物中分离得到。
文摘The abilities of scavenging O2-and · OH of crude extract,the portion extracted by n-butanol and the aqueous portion remained of bamboo leaves were studied by chemiluminescence.The results showed that all of the three extracts had strong antioxidant activity.Crude extract was higher than the portion extracted by n-butanol.The antioxidant effective positions of the aqueous portion were further tested qualitatively and found to be probably tannin and δ-OH-Lys etc.From the above,we can draw the following conclusion:the extract of bamboo leaves was a complex and synergistic mixture.It was no effective on antioxidant activity to purify further.
