首次采用反相高效液相色谱法测定茜草根中1,3,6-trihydroxy-2-methylanthraquinone-3-O-[3-O-acetyl-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]的含量。色谱柱为Purospher star RP C18色谱柱(250mm×4.6mm,5μm),流动相...首次采用反相高效液相色谱法测定茜草根中1,3,6-trihydroxy-2-methylanthraquinone-3-O-[3-O-acetyl-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]的含量。色谱柱为Purospher star RP C18色谱柱(250mm×4.6mm,5μm),流动相为甲醇:水:四氢呋喃(65:34.7:0.3),流速为1.0mL/min,检测波长为276nm,柱温为25℃。该方法的线性范围为0.020~0.160μg,r=0.9998,平均回收率为101.5%,RSD为2.0%(n=6)。该方法测定1,3,6-trihydroxy-2-methylanthraquinone-3-O-[3-O-acetyl-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]含量灵敏、准确、重现性好。展开更多
Delonix elata L.is a Ceasalpinaceae species and is traditionally used in India for treatment of skin diseases,liver diseases and rheumatic problems.However,systematic evaluation of its wound healing activity is lackin...Delonix elata L.is a Ceasalpinaceae species and is traditionally used in India for treatment of skin diseases,liver diseases and rheumatic problems.However,systematic evaluation of its wound healing activity is lacking.Thus,in the present study,we aimed to assess the wound healing activity of D.elata stem bark extract(DSE) and its isolated constituent quercetin-3-rhamnopyranosyl-(1-6) glucopyranoside(QRPG) in rats.The formulations effects on wound healing were assessed by the wound contraction rate,epithelialization period,tensile strength,content of the hydroxyproline,hexosamine and uronic acid in granulation tissue,histopathological studies and Col 1 α(I) expression level in wound tissue by reverse transcription polymerase chain reaction(RT-PCR) study.The topical application of DSE ointment caused faster epithelialization,significant wound contraction(100%),and better tensile strength(710.5 ± 10.5 g/cm^2),while QRPG showed wound epithelialization with 98.2%contraction,better than that of the control group(78.18%).The biochemical analysis of granulation tissue revealed that DSE and QRPG significantly increased hydroxyproline,hexosamine and uronic acid content.A significant increase in the expression of Col 1 α(I) was observed in the wound tissue of DSE and QRPG treated rats.DSE and QRPG were shown to enhance wound healing by increasing collagen synthesis through upregulation of Col 1 α(I),thus validating ethnomedicinal uses.展开更多
Two new megastigmane O-glucopyranosides, named (2R,3R,5R,6S,9R)-3-hydroxy-5,6-epoxy-β-ionol-2-O-β-D-glucopyrano- side (1) and (2R,3R,5R,6S,9R)-3-hydroxyl-5,6-epoxy-acety-β-ionol-2-O-β-D-glucopyranoside (2)...Two new megastigmane O-glucopyranosides, named (2R,3R,5R,6S,9R)-3-hydroxy-5,6-epoxy-β-ionol-2-O-β-D-glucopyrano- side (1) and (2R,3R,5R,6S,9R)-3-hydroxyl-5,6-epoxy-acety-β-ionol-2-O-β-D-glucopyranoside (2) together with six known mega- stigmanes, were isolated from the leaves of Broussonetia papyrifera (Linn.) Vent. Their structures were established by chemical methods and spectroscopic techniques including 2D NMR.展开更多
目的创建一种能够快速测定南葶苈子药材中芥子碱硫氰酸盐(sinapine thiocyanate,SH),槲皮素-3-O-β-D-葡萄糖-7-0-β-D-龙胆双糖苷(quercetin-3-O-beta-D-glucose-7-O-beta-D-gentiobioside,QGG),异鼠李素-3-O-β-D-吡喃葡萄糖苷(isorha...目的创建一种能够快速测定南葶苈子药材中芥子碱硫氰酸盐(sinapine thiocyanate,SH),槲皮素-3-O-β-D-葡萄糖-7-0-β-D-龙胆双糖苷(quercetin-3-O-beta-D-glucose-7-O-beta-D-gentiobioside,QGG),异鼠李素-3-O-β-D-吡喃葡萄糖苷(isorhamnetin-3-O-glucoside,IG),槲皮素-3-O-β-D-吡喃葡萄糖苷(quercetin3-O-β-D-glucopyranoside,QG)4种成分的方法。方法高效液相色谱法(high performance liquid chromatography,HPLC)测定南葶苈子样品中SH、QGG、IG、QG的含量,采用偏最小二乘法(partial least squares method,PLS)建立南葶苈子中SH、QGG、IG、QG的定量分析模型。结果所创建的QGG、QG、IG、SH的定量分析模型的内部交叉验证决定系数(R2)分别为0.9270、0.9266、0.8086、0.8289;校正均方差(root mean square error of calibration,RMSEC)分别为0.0100、0.00263、0.00313、0.111;验证均方差(root mean square error of prediction,RMSEP)分别为0.0139、0.00715、0.00395、0.0860。其中SH的特征光谱为9100~6100 cm-1;QGG的特征光谱为7300~5500 cm-1;IG的特征光谱为9500~6700 cm-1;QG的特征光谱为8200~5100 cm-1。结论利用傅里叶红外光谱建立的定量模型,能够对南葶苈子药材中QGG、QG、IG、SH的含量进行无损测定。此外通过近红外光谱PCA分析发现道地产地南葶苈子与非道地产地南葶苈子的差异较大,道地产地南葶苈子之间的差异较小。展开更多
目的建立复方鲜竹沥液中南烛木树脂酚-3α-O-β-d-葡萄糖苷含量的测定方法。方法采用HPLC法,以资生堂capcell pak C_(18)(250mm×4.6mm×5μm)为色谱柱,柱温30℃,乙腈-0.1%磷酸梯度洗脱,流速为1.0mL·min^(-1),检测波长为22...目的建立复方鲜竹沥液中南烛木树脂酚-3α-O-β-d-葡萄糖苷含量的测定方法。方法采用HPLC法,以资生堂capcell pak C_(18)(250mm×4.6mm×5μm)为色谱柱,柱温30℃,乙腈-0.1%磷酸梯度洗脱,流速为1.0mL·min^(-1),检测波长为220nm。结果南烛木树脂酚-3α-O-β-d-葡萄糖苷在0.2264~11.32μg·mL^(-1)浓度范围内线性良好(R^(2)=0.9999),加标回收率为97.06%,RSD(n=9)为1.08%,且方法的精密度、稳定性以及重复性的RSD均小于3.0%。结论该方法快速、简便、准确,可为复方鲜竹沥液的质量控制和评价提供依据。展开更多
文摘首次采用反相高效液相色谱法测定茜草根中1,3,6-trihydroxy-2-methylanthraquinone-3-O-[3-O-acetyl-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]的含量。色谱柱为Purospher star RP C18色谱柱(250mm×4.6mm,5μm),流动相为甲醇:水:四氢呋喃(65:34.7:0.3),流速为1.0mL/min,检测波长为276nm,柱温为25℃。该方法的线性范围为0.020~0.160μg,r=0.9998,平均回收率为101.5%,RSD为2.0%(n=6)。该方法测定1,3,6-trihydroxy-2-methylanthraquinone-3-O-[3-O-acetyl-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside]含量灵敏、准确、重现性好。
基金partially supported by the Department of Biotechnology,New Delhi,India(Grant no.BT/PR11505/SPD/24/337/2008BT/PR9128/INF/22/190/2013)
文摘Delonix elata L.is a Ceasalpinaceae species and is traditionally used in India for treatment of skin diseases,liver diseases and rheumatic problems.However,systematic evaluation of its wound healing activity is lacking.Thus,in the present study,we aimed to assess the wound healing activity of D.elata stem bark extract(DSE) and its isolated constituent quercetin-3-rhamnopyranosyl-(1-6) glucopyranoside(QRPG) in rats.The formulations effects on wound healing were assessed by the wound contraction rate,epithelialization period,tensile strength,content of the hydroxyproline,hexosamine and uronic acid in granulation tissue,histopathological studies and Col 1 α(I) expression level in wound tissue by reverse transcription polymerase chain reaction(RT-PCR) study.The topical application of DSE ointment caused faster epithelialization,significant wound contraction(100%),and better tensile strength(710.5 ± 10.5 g/cm^2),while QRPG showed wound epithelialization with 98.2%contraction,better than that of the control group(78.18%).The biochemical analysis of granulation tissue revealed that DSE and QRPG significantly increased hydroxyproline,hexosamine and uronic acid content.A significant increase in the expression of Col 1 α(I) was observed in the wound tissue of DSE and QRPG treated rats.DSE and QRPG were shown to enhance wound healing by increasing collagen synthesis through upregulation of Col 1 α(I),thus validating ethnomedicinal uses.
文摘Two new megastigmane O-glucopyranosides, named (2R,3R,5R,6S,9R)-3-hydroxy-5,6-epoxy-β-ionol-2-O-β-D-glucopyrano- side (1) and (2R,3R,5R,6S,9R)-3-hydroxyl-5,6-epoxy-acety-β-ionol-2-O-β-D-glucopyranoside (2) together with six known mega- stigmanes, were isolated from the leaves of Broussonetia papyrifera (Linn.) Vent. Their structures were established by chemical methods and spectroscopic techniques including 2D NMR.
文摘目的创建一种能够快速测定南葶苈子药材中芥子碱硫氰酸盐(sinapine thiocyanate,SH),槲皮素-3-O-β-D-葡萄糖-7-0-β-D-龙胆双糖苷(quercetin-3-O-beta-D-glucose-7-O-beta-D-gentiobioside,QGG),异鼠李素-3-O-β-D-吡喃葡萄糖苷(isorhamnetin-3-O-glucoside,IG),槲皮素-3-O-β-D-吡喃葡萄糖苷(quercetin3-O-β-D-glucopyranoside,QG)4种成分的方法。方法高效液相色谱法(high performance liquid chromatography,HPLC)测定南葶苈子样品中SH、QGG、IG、QG的含量,采用偏最小二乘法(partial least squares method,PLS)建立南葶苈子中SH、QGG、IG、QG的定量分析模型。结果所创建的QGG、QG、IG、SH的定量分析模型的内部交叉验证决定系数(R2)分别为0.9270、0.9266、0.8086、0.8289;校正均方差(root mean square error of calibration,RMSEC)分别为0.0100、0.00263、0.00313、0.111;验证均方差(root mean square error of prediction,RMSEP)分别为0.0139、0.00715、0.00395、0.0860。其中SH的特征光谱为9100~6100 cm-1;QGG的特征光谱为7300~5500 cm-1;IG的特征光谱为9500~6700 cm-1;QG的特征光谱为8200~5100 cm-1。结论利用傅里叶红外光谱建立的定量模型,能够对南葶苈子药材中QGG、QG、IG、SH的含量进行无损测定。此外通过近红外光谱PCA分析发现道地产地南葶苈子与非道地产地南葶苈子的差异较大,道地产地南葶苈子之间的差异较小。
文摘目的建立复方鲜竹沥液中南烛木树脂酚-3α-O-β-d-葡萄糖苷含量的测定方法。方法采用HPLC法,以资生堂capcell pak C_(18)(250mm×4.6mm×5μm)为色谱柱,柱温30℃,乙腈-0.1%磷酸梯度洗脱,流速为1.0mL·min^(-1),检测波长为220nm。结果南烛木树脂酚-3α-O-β-d-葡萄糖苷在0.2264~11.32μg·mL^(-1)浓度范围内线性良好(R^(2)=0.9999),加标回收率为97.06%,RSD(n=9)为1.08%,且方法的精密度、稳定性以及重复性的RSD均小于3.0%。结论该方法快速、简便、准确,可为复方鲜竹沥液的质量控制和评价提供依据。