在麻醉犬结扎冠状动脉左前降支造成心梗以及麻醉大鼠静注心得安和戊脉安混合液所致急性心衰的两种模型上,心脉龙均显示增强心肌收缩力并增加心输出量,对外周阻力、心肌耗氧量和心率等无明显影响。对缺血所致 ST 段抬高也未见明显作用。...在麻醉犬结扎冠状动脉左前降支造成心梗以及麻醉大鼠静注心得安和戊脉安混合液所致急性心衰的两种模型上,心脉龙均显示增强心肌收缩力并增加心输出量,对外周阻力、心肌耗氧量和心率等无明显影响。对缺血所致 ST 段抬高也未见明显作用。在戊脉安和心得安所致大鼠心衰模型上,多巴胺2mg/kg iv 的心血管效应与心脉龙相似。展开更多
3-Benzyl-L-uridine and 6-benzyl-L-adenosine are synthesized as intermediates to prepare novel L-nucleoside compounds with potential antiviral activities.The synthetic procedures starting from L-tetraacetylribofuranose...3-Benzyl-L-uridine and 6-benzyl-L-adenosine are synthesized as intermediates to prepare novel L-nucleoside compounds with potential antiviral activities.The synthetic procedures starting from L-tetraacetylribofuranose are investigated and better yields are achieved.The structures are confirmed by means of 1HNMR spectroscopy,elemental analysis and optical rotations.展开更多
Using 3-O-methyl-D-chiro-inosito as starting material,through acetalation and mesylation the intermediate 3,which was subjected to hydrolysis to afford 3-O-Methyl-4-[(methylsulfonyl)oxy]-D-chiro-inositol 4 was obtaine...Using 3-O-methyl-D-chiro-inosito as starting material,through acetalation and mesylation the intermediate 3,which was subjected to hydrolysis to afford 3-O-Methyl-4-[(methylsulfonyl)oxy]-D-chiro-inositol 4 was obtained.Subsequently,the key epoxide 5 was obtained in excellent yield via an epoxidation from the compound 4.Finally,the process of opening of epoxy ring by azole-bases resulted in the novel carbocyclic azole nucleoside compounds 6-10 in the presence of 1,8-diazabicycloundec-7-ene(DBU) as catalyst,which appeared strong regioselectivity.展开更多
文摘在麻醉犬结扎冠状动脉左前降支造成心梗以及麻醉大鼠静注心得安和戊脉安混合液所致急性心衰的两种模型上,心脉龙均显示增强心肌收缩力并增加心输出量,对外周阻力、心肌耗氧量和心率等无明显影响。对缺血所致 ST 段抬高也未见明显作用。在戊脉安和心得安所致大鼠心衰模型上,多巴胺2mg/kg iv 的心血管效应与心脉龙相似。
文摘3-Benzyl-L-uridine and 6-benzyl-L-adenosine are synthesized as intermediates to prepare novel L-nucleoside compounds with potential antiviral activities.The synthetic procedures starting from L-tetraacetylribofuranose are investigated and better yields are achieved.The structures are confirmed by means of 1HNMR spectroscopy,elemental analysis and optical rotations.
文摘Using 3-O-methyl-D-chiro-inosito as starting material,through acetalation and mesylation the intermediate 3,which was subjected to hydrolysis to afford 3-O-Methyl-4-[(methylsulfonyl)oxy]-D-chiro-inositol 4 was obtained.Subsequently,the key epoxide 5 was obtained in excellent yield via an epoxidation from the compound 4.Finally,the process of opening of epoxy ring by azole-bases resulted in the novel carbocyclic azole nucleoside compounds 6-10 in the presence of 1,8-diazabicycloundec-7-ene(DBU) as catalyst,which appeared strong regioselectivity.
