反相高效液相色谱法测定金银花合剂中的绿原酸含量

目的　建立一种用反相高效液相色谱法测定金银花合剂中绿原酸的含量。方法　以shim - packCLC -ODS (2 0 0mm× 4 .6mm ,5um )为色谱柱 ,用甲醇 -水 -冰醋酸 (35∶6 5∶0 .5 )作流动相 ,检测波长为 :32 7nm ,流速 :1 .0mL/min ,柱温 :常温 ,外标法定量。结果　绿原酸在 1 5 μg·mL-1 ～ 1 0 5 μg·mL-1 范围内呈现出良好的线性关系 ,(r =0 .9999) ,方法平均回收率为 :1 0 0 .2 5 %,RSD为 0 .4 8%(n =4 )。结论　该方法简便、快速 ,测定结果准确可靠 ,可用于金银花合剂的质量控制。     

高效液相法测定银黄胶囊中绿原酸及黄芩苷的含量

目的　建立高效液相法测定银黄胶囊中绿原酸 ,黄芩苷的含量。方法　Nova pakC18( 2 5 0mm× 4 .6mm ,10 μm)色谱柱 ,绿原酸流动相为乙腈 0 .4 %磷酸 ( 13∶87) ,流速为 1.0mL·min-1,检测波长为 32 7nm ;黄芩苷流动相为甲醇 0 .4 %磷酸 ( 5 0∶5 0 ) ,流速为 1.0mL·min-1,检测波长为 2 80nm。结果　绿原酸在 0 .2 30 1～ 1.6 10 7μg范围内呈良好的线性关系 ,回归方程为Y =2 5 95 .8Х + 1.2 96 4 (r =0 .9999) ,平均回收率为 99.5 8% ,RSD为 1.10 % ,重现性RSD为 0 .4 6 % ;黄芩苷在 0 .2 4 5 3～ 1.4 718μg范围内呈良好的线性关系 ,回归方程为Y =30 4 5 .3Х - 1.3333(r =0 .9999) ,平均回收率为 99.88% ,RSD为 0 .89% ,重现性RSD为 0 .5 6 %。结论　本法简便 ,快速 ,灵敏 ,准确 ,重现性好 ,可作为银黄胶囊的质量标准     

HPLC法测定茵栀黄软胶囊中黄芩苷、栀子苷和绿原酸的含量

目的测定茵栀黄软胶囊中的 3种有效成分 ,黄芩苷、栀子苷、绿原酸的含量。方法HPLC法 ,Irregular HC18(2 5 0 . 0mm× 4 6mm ,10 μm)色谱柱。黄芩苷流动相 :甲醇 水 磷酸 (V∶V∶V =4 7. 0∶5 .3 0∶0. 2 ) ,流速 :1 0mL·min-1,检测波长 :2 80nm ;栀子苷流动相 :乙睛 水 (V∶V =15∶85 ) ,流速 :1 0mL·min-1,检测波长 :2 38nm ;绿原酸流动相 :乙睛 磷酸溶液 (w =0 . 4 % )(V∶V =13∶87) ,流速 :1 0mL·min-1,检测波长 :32 7nm。结果黄芩苷在 2 7 5～ 137 5mg·L-1内质量浓度与峰面积具有良好的线性关系 ,线性回归方程为A =6 4. 83× 10 4ρ - 1 6. 96× 10 .5 ,r =0 . 9998,平均回收率为 99 4 6 % (RSD =1 0 1% ) ;栀子苷在 16 .5～ 82 . 5mg·L-1内质量浓度与峰面积具有良好的线性关系 ,线性回归方程为A =8 794× 10 .5ρ - 4 . 116× 10 2 ,r =0 . 9999,平均回收率为 10 0 . 37% (RSD =1 4 .0 % ) ;绿原酸在 2 4～ 12 0mg·L-1内质量浓度与峰面积具有良好的线性关系 ,线性回归方程为A =2 4 88× 10 4ρ - 9 2 4 4× 10 4,r =0 9999,平均回收率为 99 38%(RSD =1. 89% )。结论测定方法可用于茵栀黄软胶囊的质量控制。     

RP-HPLC法测定复方大青叶注射液中绿原酸和咖啡酸的含量

目的采用RP HPLC法测定复方大青叶注射液中绿原酸和咖啡酸的含量。方法色谱柱为KromasilC8( 5 μm ,4 6mm× 2 0 0mm) ;流动相为甲醇 磷酸水溶液 ( φ =0 2 % ) (用氢氧化钠溶液(w =9% )调pH 2 8(V∶V =2 2∶78) ) ;流速为 0 8mL·min-1;检测波长为 3 2 3nm。结果绿原酸平均回收率为 1 0 0 0 % ,RSD为 1 1 % ;咖啡酸平均回收率为 1 0 0 0 % ,RSD为 1 9%。结论为复方大青叶注射液的质量控制提供一定依据。     

HPLC法测定消炎汤合剂中绿原酸的含量

目的 :采用 HPL C法测定绿原酸的含量 ,为消炎汤合剂的质量控制提供检测方法。方法 :采用 Kromasil C1 8色谱柱 (4.6 mm× 2 5 0 mm ,5μm) ,甲醇 - 0 .4 %磷酸水溶液 (15∶ 85 )为流动相 ,流速 1.0 ml/ min,检测波长 32 7nm。结果 :绿原酸在 0 .1～ 2 .0μg范围内线性关系良好 (r =0 .9999) ,平均回收率为 95 .1%± 1.2 8% ,日内及日间的 RSD均小于 2 %。结论 :本方法具有快速、简便、灵敏、准确、经济等特点 ,适用于消炎汤合剂的质量控制。     

HPLC法测定银黄含化片中绿原酸和黄芩苷含量

目的　建立HPLC法测定银黄含化片中绿原酸和黄芩苷含量。方法　采用C18柱(2 5 0mm× 4 6mm,5 μm),乙腈 -1%乙酸(30∶70)为流动相,流速为 1ml·min-1,检测波长 0～ 5min,32 7nm,测定绿原酸;5～ 10min,2 80nm,测定黄芩苷。结果　绿原酸在 0 14 4～ 0 72 μg范围内峰面积与进样量呈良好的线性关系,RSD =0 5 5 %(n =6);黄芩苷在 0 2 5～ 1 2 5 μg范围内峰面积与进样量呈良好的线性关系,RSD =0 6 5 %(n =6)。     

高效液相色谱法测定抗感颗粒中绿原酸的含量

目的　建立抗感颗粒中绿原酸的HPLC测定方法。方法　采用ZORBAXSB C18柱 (4. 6mm×250mm, 5μm),甲醇 1%磷酸溶液 (25∶75)为流动相,检测波长为 327nm。结果　绿原酸在 7. 5 ~120. 0μg·mL-1的浓度内呈良好的线性关系 (r=0. 9999),平均回收率为: 100. 48% (RSD=1. 2% )。结论　该方法简便、快速、准确,适用于抗感颗粒的质量控制。     

高效液相色谱法测定清肝颗粒中绿原酸的含量

目的 　建立 HPL C法测定清肝颗粒中绿原酸含量的方法。方法 　采用 Nova-pak C1 8色谱柱 ,流动相 :甲醇 -冰醋酸 -三乙胺 (14∶ 86∶ 1∶ 0 .3 ) ,流速 :1ml· min- 1 ,检测波长 :3 2 7nm,室温下对清肝颗粒中的绿原酸进行含量测定。结果　绿原酸在 0 .2 5 6～ 0 .5 12μg范围内 ,线性关系良好 (r=0 .99981) ;平均加样回收率为 99.5 3 % ,RSD为 1.5 2 % (n=6)。结论 　本方法准确 ,简便 ,灵敏度高 ,结论可靠 ,可作为清肝颗粒的质量控制标准。     

银黄口服液中黄芩苷和绿原酸含量的测定

目的　建立高效液相色谱法测定银黄口服液中黄芩苷、绿原酸的含量。方法　Nova -pakC18(2 5 0mm× 4 6mm ,10 μm)色谱柱 ,黄芩苷流动相为甲醇 - 0 4 %磷酸 (5 0∶5 0 ) ,流速为 1 0ml·min-1,检测波长为 2 78nm ;绿原酸流动相为乙腈 -0 4 %磷酸 (13∶87) ,流速为 1 0ml·min-1,检测波长为 318nm。结果　黄芩苷在 0 2 4 5 3～ 1 4 718μg范围内呈良好的线性关系 ,平均回收率为 99 6 8% ,RSD为 0 87% ,重现性RSD为 0 5 6 % ;绿原酸在 0 2 30 1～ 1 6 10 7μg范围内呈良好的线性关系 ,平均回收率为 99 5 8% ,RSD为 1 10 % ,重现性RSD为 0 4 6 %。结论　本法简便、快速、灵敏、准确、重现性好 ,可作为银黄口服液的质量控制标准     

HPLC测定新疆药桑叶中绿原酸、芦丁、异槲皮苷和槲皮素

目的建立新疆药桑叶中绿原酸、芦丁、异槲皮苷和槲皮素的高效液相色谱测定方法。方法采用BDS C18色谱柱（4.6 mm×250 mm,5μm）,柱温：25℃,流动相：乙腈（A）-0.01 mol.L-1醋酸铵溶液（100 mL中含0.2 mL三乙胺,用冰醋酸调pH至4.8）（B）,梯度洗脱[0 min,A-B（8∶92）;30 min,A-B（30∶70）],流速：1.0 mL.min-1,检测波长350 nm。结果绿原酸在1.052 0μg～5.067 9μg（r=0.999 3）、芦丁在1.029 4μg～5.031 7μg（r=0.999 8）、异槲皮苷在1.076 8～5.065 5μg（r=0.999 0）、槲皮素在1.075 0μg～5.055 0μg（r=0.999 1）内线性关系良好。绿原酸、芦丁、异槲皮苷和槲皮素的平均回收率分别为102.2%（RSD=1.3%）、104.6%（RSD=0.9%）、104.0%（RSD=1.9%）、104.7%（RSD=1.2%）。检出限（S/N=3）分别为0.160,0.081,0.033,0.640μg.mL-1。结论此法操作简便、快速、灵敏、准确,样品处理简便易行,适于同时测定新疆药桑叶中绿原酸、芦丁、异槲皮苷和槲皮素。     

Comparison of the choleretic properties of bile acids

The choleretic properties of cholic, chenodeoxycholic, and deoxycholic acid and their taurine and glycine conjugates were compared to their ability to form micelles. It has previously been concluded that deoxycholate has the lowest critical micellar concentration; chenodeoxycholate is slightly higher and cholic is much higher. Conjugation with glycine and taurine has little or no effect on the critical micelle concentration. Since the choleretic properties of bile salts are thought to be directly proportional to their osmotic activities, one might suspect that deoxycholic acid would be the least choleretic, chenodeoxycholic slightly more choleretic and cholic much more choleretic, with little difference between the conjugated and unconjugated forms. However, in the present study, cholic, chenodeoxycholic and taurocholic acid produced similar increases in bile flow (450–700 μl/kg) after an equimolar dose (55 μM/kg). Except for the conjugation of deoxycholic acid with taurine, conjugation of these bile acids with glycine or taurine always decreased the choleretic properties of the bile acids. Therefore, it has been concluded that there is not a good correlation between the in vitro osmotic properties of bile acids and their ability to increase bile flow.     

抗癌活性成分满五酸等三个化合物的分离和鉴定

从产于四川宜宾翼梗五味子果实中,分得抗癌活性成分满五酸(1),同时分得schizandronic acid(2)和cuparenic acid(3),结构由与标准化合物比较光谱数据和物理常数而确证。     

HPLC法测定熊去氧胆酸片有关物质的含量

[摘要]目的：建立高效液相色谱法测定熊去氧胆酸片有关物质含量的方法。方法：用十八烷基硅烷键合硅胶为填充剂，以磷酸盐缓冲液（pH3.0）-甲醇-乙腈（35:37:28）为流动相，示差折光检测器测定。结果：在选定的色谱条件下，各成分可达到很好的分离，7-酮基胆石酸、胆酸、鹅去氧胆酸、胆石酸分别在0.05~2.00，0.05~2.00，0.05~2.00，0.10~2.00mg·mL-1的范围内线性关系良好(r>0.9989)；精密度、稳定性试验的RSD均不大于0.5%；回收率分别为100.1%、99.8%、100.7%和101.9%（n=9,RSD<1.4%）。7-酮基胆石酸、胆酸、鹅去氧胆酸、胆石酸定量限分别为3.0、2.5、7.0、20μg·mL-1，检测限分别为0.8、0.7、2.0、3.5μg·mL-1。测定供试品两批，供试品一7-酮基胆石酸检出量为0.03%，胆酸和胆石酸均未检出，鹅去氧胆酸检出量为0.66%；供试品二7-酮基胆石酸、鹅去氧胆酸检出量均为0.10%，胆酸和胆石酸均未检出。结论：该方法灵敏度高，专属性强，适于测定熊去氧胆酸片中有关物质的含量。     

Pomegranate (<Emphasis Type="Italic">Punica granatum</Emphasis>) pure chemicals show possible synergistic inhibition of human PC-3 prostate cancer cell invasion across Matrigel™

Summary Four pure chemicals, ellagic acid (E), caffeic acid (C), luteolin (L) and punicic acid (P), all important components of the aqueous compartments or oily compartment of pomegranate fruit (Punica granatum), and each belonging to different representative chemical classes and showing known anticancer activities, were tested as potential inhibitors of in vitro invasion of human PC-3 prostate cancer cells in an assay employing Matrigel™ artificial membranes. All compounds significantly inhibited invasion when employed individually. When C, P, and L were equally combined at the same gross dosage (4 μ g/ml) as when the compounds were tested individually, a supradditive inhibition of invasion was observed, measured by the Kruskal-Wallis non-parametric test.An erratum to this article can be found at     

HPLC同时测定升麻中三个酚酸类成分的含量

目的建立快速测定升麻中咖啡酸、阿魏酸及异阿魏酸含量的HPLC方法。方法色谱柱为C18柱(4.6 mm×250 mm,5μm);流动相:乙腈-0.01%磷酸梯度洗脱;柱温:30℃;检测波长:320 nm;流速:1.0 ml/min。结果咖啡酸、阿魏酸、异阿魏酸分别在5.78~115.6μg/ml(r=0.9998,n=6),4.03~80.60μg/ml(r=1,n=6),16.45~329.00μg/ml(r=1,n=6)范围内线性关系良好,回收率在97.6%~101.5%。结论建立的方法准确可靠,可以用于测定升麻中咖啡酸、阿魏酸、异阿魏酸的含量。     

Antitumor triterpenes from medicinal plants

Thirteen kinds of naturally occurring or derivatised triterpenes, reported to have an antitumoral property, were reinvestigated on the basis of their direct cytotoxicity or the inhibitory activity on cell growth against five kinds of cultured human tumor cells,i. e., A-549, SK-OV-3, SK-MEL-2, XF498 and HCT15,in vitro. Ursonic acidIII, betulinic acidVIII, betulonic acidX and glycyrrhetinic acidXI were exhibited a marked inhibition on cell growth.     

Oral antipyretic therapy: Evaluation of the N-aryl-anthranilic acid derivatives mefenamic acid,tolfenamic acid and flufenamic acid

Summary The antipyretic activity of three N-aryl-anthranilic acid derivatives, mefenamic acid, tolfenamic acid and flufenamic acid, was compared and their optimal antipyretic dose determined in a trial in 87 children (aged 5 months to 15 years), who suffered from infections and fever exceeding 38.5°C. Tolfenamic acid proved to be the most potent antipyretic agent of the three drugs; it was eight times more powerful than mefenamic acid and three times more powerful than flufenamic acid. The optimal antipyretic doses were: mefenamic acid 4 mg/kg, tolfenamic acid 0.5 mg/kg and flufenamic acid 1.5 mg/kg. It is evident that the antipyretic activity of these anthranilic acid derivatives is even greater than their antirheumatic effect, the difference being most noticeable in the case of tolfenamic acid.     

HPLC测定L-天门冬氨酸中的有关物质

目的建立L-天门冬氨酸中羟基丁二酸、丁二酸和富马酸等有关物质的检查方法。方法采用HPLC法,使用AQ C18色谱柱,0.01 mol.L-1的磷酸二氢钾水溶液(磷酸调pH3)为流动相,检测波长200 nm。结果主成分和杂质可完全分离。结论建立的方法灵敏、专属,可用于L-天门冬氨酸中有关物质的测定。