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
The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamid...The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamide and the anhydrous zinc chloride.Finally,the product is synthesized in the existence of the LHMDS.All the compounds are confirmed by MS and 1H-NMR.展开更多
基金supported by the National Key Technology R&D Program of China (2007BAE14B01‐06)the Fund for Creative Research Groups of the National Natural Science Foundation of China (50621302)~~
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。
文摘The hydrochloride of 1-(1-amino-3-methyl)butyl borate pinacol is prepared by using the isobutylbromide to form the Grignard agent.The product is protected with the pinacol,then reacted with the lithium diisopropylamide and the anhydrous zinc chloride.Finally,the product is synthesized in the existence of the LHMDS.All the compounds are confirmed by MS and 1H-NMR.