To develop a HPIX-UV-MS method for identifying the constituents in theChinese drug Notoginseng (the root of Panax notoginseng). Methods A Phenomenex Luna C_(18) column(250 mm x 4.6 mm ID, 5 μm) was utilized. Water co...To develop a HPIX-UV-MS method for identifying the constituents in theChinese drug Notoginseng (the root of Panax notoginseng). Methods A Phenomenex Luna C_(18) column(250 mm x 4.6 mm ID, 5 μm) was utilized. Water containing 0.005% formic acid (A) and acetonitrilecontaining 0.005% formic acid (B) were used as gradient eluents. UV spectra were recorded in range195 - 400 nm. Both positive and negative ion ESI modes were used. Results The constituents inNotoginseng were well separated and detected. Fourteen compounds were identified by comparing theirretention time and ESI-MS data with those obtained from the reference compounds. Forty-one compoundswere deduced by data analysis of MS and literature; among them, yesanchinosides-H and -E,chikusetsusaponin-L_5, malonyl-ginsenoside-R_(g_1), the isomers of notoginsenosides-J, -A, -R_1, -G,-R_2, and ginsenoside-Rh_3 were discovered in Notoginseng for the first time. Conclusion Thismethod gives high sensitivity and good separation, and is suitable for identifying the constituentsin Notoginseng. This result is helpful for further phytochemical research on Notoginseng. Based onthis result, further quality control can be studied.展开更多
目的:利用超快速液相-四级杆-飞行时间串联质谱(UFLC/Q-TOF-MS)结合主成分分析法考察人参-黄连共煎前后人参皂苷类成分的变化。方法:采用UPLC T3 C18色谱柱(2.1 mm×100 mm,1.8μm),流动相0.3%甲酸-0.3%甲酸乙腈梯度洗脱,负离子模...目的:利用超快速液相-四级杆-飞行时间串联质谱(UFLC/Q-TOF-MS)结合主成分分析法考察人参-黄连共煎前后人参皂苷类成分的变化。方法:采用UPLC T3 C18色谱柱(2.1 mm×100 mm,1.8μm),流动相0.3%甲酸-0.3%甲酸乙腈梯度洗脱,负离子模式下采集质谱数据,应用Markview1.2.1等软件进行主成分分析(PCA),以黄连水煎液为空白,比较人参水煎液与人参-黄连共煎中人参皂苷类成分的变化。结果:3种溶液中发现10个差异性人参皂苷类化合物,其中齐墩果酸和2个未知化合物含量显著上升,20-葡萄糖Rf和人参皂苷Rf,Ra3,Rb1,Ra2,Rb3,Rs2含量显著下降。结论:负离子模式下方法能很好区分共煎前后人参皂苷类成分的变化,提示人参皂苷类成分水解生成的齐墩果酸型苷元可能是人参与黄连共煎后的物质基础。展开更多
Two minor saponins were isolated from the leaves of P. ginseng and their struc-tures were elucidated as 3β,12β, 20(S)-trihydroxyl-dammar-24(25)-ene-(20-O-α-L-arabinofurano-syl(1→6)-β-D-glucopyranosyl)-3-O-β-D-gl...Two minor saponins were isolated from the leaves of P. ginseng and their struc-tures were elucidated as 3β,12β, 20(S)-trihydroxyl-dammar-24(25)-ene-(20-O-α-L-arabinofurano-syl(1→6)-β-D-glucopyranosyl)-3-O-β-D-glucopyranoside (1),and 3β,12β, 20(S)-trihydroxyl-dam-mar-24(25)-ene-(20-O-α-L-arabinopyranosyl(1→6)-β-D-glucopyranosyl)-3-O-β-glucopyranoside(2),respectively The fonner corresponds to notoginsenoside-Fe which is isolated for the first time from the title plant The latter is a new natural product and named as ginsenoside-Rd2.展开更多
基金NationalBasicResearchProgramofChina (No .G19990 5 44 0 6)NationalNaturalScienceFoundationofChina(No .3 9970 898)
文摘To develop a HPIX-UV-MS method for identifying the constituents in theChinese drug Notoginseng (the root of Panax notoginseng). Methods A Phenomenex Luna C_(18) column(250 mm x 4.6 mm ID, 5 μm) was utilized. Water containing 0.005% formic acid (A) and acetonitrilecontaining 0.005% formic acid (B) were used as gradient eluents. UV spectra were recorded in range195 - 400 nm. Both positive and negative ion ESI modes were used. Results The constituents inNotoginseng were well separated and detected. Fourteen compounds were identified by comparing theirretention time and ESI-MS data with those obtained from the reference compounds. Forty-one compoundswere deduced by data analysis of MS and literature; among them, yesanchinosides-H and -E,chikusetsusaponin-L_5, malonyl-ginsenoside-R_(g_1), the isomers of notoginsenosides-J, -A, -R_1, -G,-R_2, and ginsenoside-Rh_3 were discovered in Notoginseng for the first time. Conclusion Thismethod gives high sensitivity and good separation, and is suitable for identifying the constituentsin Notoginseng. This result is helpful for further phytochemical research on Notoginseng. Based onthis result, further quality control can be studied.
文摘目的:利用超快速液相-四级杆-飞行时间串联质谱(UFLC/Q-TOF-MS)结合主成分分析法考察人参-黄连共煎前后人参皂苷类成分的变化。方法:采用UPLC T3 C18色谱柱(2.1 mm×100 mm,1.8μm),流动相0.3%甲酸-0.3%甲酸乙腈梯度洗脱,负离子模式下采集质谱数据,应用Markview1.2.1等软件进行主成分分析(PCA),以黄连水煎液为空白,比较人参水煎液与人参-黄连共煎中人参皂苷类成分的变化。结果:3种溶液中发现10个差异性人参皂苷类化合物,其中齐墩果酸和2个未知化合物含量显著上升,20-葡萄糖Rf和人参皂苷Rf,Ra3,Rb1,Ra2,Rb3,Rs2含量显著下降。结论:负离子模式下方法能很好区分共煎前后人参皂苷类成分的变化,提示人参皂苷类成分水解生成的齐墩果酸型苷元可能是人参与黄连共煎后的物质基础。
文摘Two minor saponins were isolated from the leaves of P. ginseng and their struc-tures were elucidated as 3β,12β, 20(S)-trihydroxyl-dammar-24(25)-ene-(20-O-α-L-arabinofurano-syl(1→6)-β-D-glucopyranosyl)-3-O-β-D-glucopyranoside (1),and 3β,12β, 20(S)-trihydroxyl-dam-mar-24(25)-ene-(20-O-α-L-arabinopyranosyl(1→6)-β-D-glucopyranosyl)-3-O-β-glucopyranoside(2),respectively The fonner corresponds to notoginsenoside-Fe which is isolated for the first time from the title plant The latter is a new natural product and named as ginsenoside-Rd2.
