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三氮唑核苷合成研究进展 总被引:6,自引:0,他引:6
三氮唑核苷 (Ribavirin)是一种良好的广谱抗病毒药 ,并且该类化合物的应用日趋广泛。系统介绍了三氮唑核苷的合成方法。卤代糖法是以 1,2 ,4-三氮唑 -3 -羧酸甲酯 (2 )与六甲基二硅烷进行硅烷化反应后 ,与 2 ,3 ,5-O-三乙酰基 -β-D-呋喃核糖溴化物 (1)在乙腈中反应制得化合物 (3 ) ,然后用氨 -甲醇溶液氨解制得三氮唑核苷 (4) ;核苷酸法是以核苷酸为原料经水解制得的核苷在醋酸 -冰醋酸体系中反应制得 1,2 ,3 ,5-O-四乙酰基 -β-D-呋喃核糖 (5) ,再和 (2 )在催化剂存在下缩合得化合物 (3 ) ,然后氨解制得 (4) ;肌苷法是以肌苷为原料制得(5) ,再和 (2 )在催化剂存在下缩合得化合物 (3 ) ,氨解制得 (4) ;腺苷法是以腺苷为原料 ,阳离子交换树脂做催化剂 ,乙酰化制得化合物 (5) ,再经缩合、氨解制得 (4) 相似文献
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目的:建立人血浆中利巴韦林的HPLC-MS分析方法, 用以测定18 名健康男性受试者舌下含服不同厂家的利巴韦林含片后的血药浓度, 估算受试制剂和参比制剂的药动学参数, 评价两种制剂是否生物等效。方法:采用双周期随机交叉试验设计。分别给予18 名男性健康受试者试验制剂或参比制剂80 mg, 采集静脉血样, 血浆样品去蛋白后用HPLC/MS/MS 法检测药物浓度。计算药动学参数, 判定两制剂是否生物等效。结果:测定利巴韦林的线性范围为2 ~ 500 ng/mL (r2 为0.9944), 平均回收率>90 %, 日内RSD 和日间RSD 均<10 %。测得血浆中两种制剂的利巴韦林的主要药代动力学参数tmax 、Cmax 、t 1/2 、AUC0 -72 和AUC0→∞分别为:(1.1 ±0.5) 、(1.1 ±0.4) h, (249±89) 、(232 ±65) ng/mL, (34 ±11) 、(34 ±11) h,(2828 ±1215) 、(2685 ±1096) ng。h。mL-1, (3600 ±1568) 、(3416 ±1379) ng。h。mL-1 。以AUC0 -72 计算, 利巴韦林含片的相对生物利用度平均为(106±16) %。结论:本方法更简便、准确, 灵敏度得到很大提高。两种制剂的利巴韦林药代动力学参数无统计学差异, 具有生物等效性。 相似文献
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This study describes a simple, sensitive, specific and generic HPLC-DAD method for simultaneous determination of four drugs prescribed for treatment of Hepatitis C Virus (HCV) infection. Investigated drugs include daclatasvir (DAC), ledipasvir (LED), sofosbuvir (SOF) and ribavirin (RIB). Successful separation was accomplished using Thermohypersil BDS-C8 column (4.6?×?250?mm, 5?µm) with gradient elution of the mobile phase consisted of mixed phosphate buffer pH 7.5 and methanol. Gradient elution started with 25% methanol, ramped up linearly to 80% in 15?min then kept constant till the end of the run. Flow rate was 1.5?mL/min. Peak areas were measured at 235, 260, 315, and 332?nm for RIB, SOF, DAC, and LED, respectively. Peaks of the analytes were perfectly resolved with retention times 2.0, 12.1, 14.7, and 17.2?min for RIB, SOF, DAC, and LED, respectively. The developed method was validated according to ICH guidelines with respect to system suitability, linearity, ranges, accuracy, precision, specificity, robustness, and limits of detection and quantification. The proposed method showed good linearity in the ranges 5–500, 2–300, 0.5–75, and 0.5–75?µg/mL for RIB, SOF, DAC, and LED respectively. Limits of detection were 0.10–0.66?μg/mL for the analyzed drugs. Specificity was established by separation of target drugs from 7 process-related impurities for SOF including its major metabolite (GS-331007). Applicability of the proposed method to real life situations was assessed through the analysis of four different pharmaceutical formulations and satisfactory results were obtained. Additionally, dissolution profiles of the 4 drugs were studied using the developed method. 相似文献
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建立了禽蛋中利巴韦林及其主要代谢物TCONH2、RTCOOH的QuEChERS提取净化并结合HILIC-MS/MS的检测方法。禽蛋样品经乙腈提取后,利用QuEChERS净化盐包(2 g无水硫酸钠、100 mg GCB、50 mg C18)净化后,浓缩,纯水复溶,水饱和正己烷除脂,过滤膜,在HILIC模式下进行检测,并利用利巴韦林同位素内标进行定量。在优化条件下,3种物质在2.00~100μg/L范围内线性关系良好,相关系数r不低于0.99,检出限为0.146~0.763μg/kg,定量限为0.438~2.26μg/kg。空白基质加标(5.00,10.0,50.0μg/kg)回收率为71.6%~97.3%,相对标准偏差(δRSD,n=6)为3.5%~8.6%。该方法操作简单快速,精确度和准确度较好,成本低,适用于禽蛋中利巴韦林及其代谢物残留量的快速定量检测。 相似文献
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