RESUMEN
AIM : To establish a HPLC method for simultaneous determination of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby.METHODS: Using Diamonsil C_(18) (4.6 mm×250 mm,5 μm) as analytical column.The mobile phase consisted of acetonitrile (A) and 0.1% phosphoric acid ( B ) with gradient elution : 0～18rain,83%～80% B; 18～30 min,80%～86% B.The detection wavelength of rutin and naringenin-7-o-glucoside was at 254 nm and 281 nm,respectively.The flow rate was 1.0 mL/min; Column temperature was at 35 ℃.RESULTS: A better separating effect was obtained with the HPLC gradient elution method.The linear calibration curve of rutin and naringenin-7-o-glucoside were obtained in the concentration range of 1.00～48.00 μg/mL( r =0.999 3 ) and 0.64 ～ 40.72 μg/mL( r = 0.999 8 ),respectively.CONCLUSION : The HPLC method is accurate,simple and can be used to determine the contents of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby simultaneously.
RESUMEN
AIM:To study the chemical constituents of Lysimachia clethroide Duby. METHODS:Chromatographic techniques,including MS and NMR,were used to isolate and purify the constituents based on column chromatography separation on silica gel,Sephadex LH-20 and Semipreparative RP-HPLC. RESULTS:Eleven flavonoids were obtained and elucidated as: kaempferol (1),kaempferol 3-O-?-D-glucopyranoside (2),kaempferol 3-O-?-D-galactoside (3),kaempferol 3-O-?-D-(6″-p-coumaroyl)-glucopyranoside (4),quercetin (5),Isorhamnetin (6) ,quercetin 3-O-?-D-galactoside (7),quercetin 3′-methoxy-3-O-?-D-galactoside (8),quercetin 3-O-?-D-(6″-p-coumaroyl)-galactoside (9),4′-methoxy-5,6-dihydroxyisoflavone-7-O-?-D-glucopyranoside (10),7-O-glucosyl liquiritigenin (11). CONCLUSION: Compounds 3,6 were isolated from this plant and compounds 8-11 were isolated from this genus for the first time.
RESUMEN
AIM:To establish a HPLC method for simultaneous determination of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby.METHODS:Using Diamonsil C_ 18(4.6 mm ?250 mm,5?m)as analytical column.The mobile phase consisted of acetonitrile(A)and 0.1% phosphoric acid(B)with gradient elution:0~18 min,83%~80%B;18~30 min,80%~86%B.The detection wavelength of rutin and naringenin-7-o-glucoside was at 254 nm and 281 nm,respectively.The flow rate was 1.0 mL/min;Column temperature was at 35 ℃.RESULTS :A better separating effect was obtained with the HPLC gradient elution method.The linear calibration curve of rutin and naringenin-7-o-glucoside were obtained in the concentration range of 1.00~48.00 ?g/mL(r=0.999 3)and 0.64~40.72 ?g/mL(r=0.999 8),respectively.CONCLUSION:The HPLC method is accurate,simple and can be used to determine the contents of rutin and naringenin-7-o-glucoside in Lysimachia clethroide Duby simultaneously.