An orthogonal-design experiment with the type of L9(34) is applied to optimize the condition for sulfonation of andrographolide with concentrated sulfuric acid.The optimal sulfonation condition is established by gener...An orthogonal-design experiment with the type of L9(34) is applied to optimize the condition for sulfonation of andrographolide with concentrated sulfuric acid.The optimal sulfonation condition is established by general analysis of reacting percentage of sulfonation agent and the yield of main aim product with multi-target grading method.The multi-target grade is significantly affected by the weight ratio of concentrated sulfuric acid to andrographolide,whereas reaction time and concentration of the alkali used for neutralization have insignificant effect.The optimal condition is established as concentrated sulfuric acid reacting with half weight of andrographolide for 72 h and then neutralized by sodium hydroxide with a weight concentration of 30%.展开更多
作者继江西八一垦殖场医院药厂、上海中药三厂和上海医药工业研究院对穿心莲内酯磺化的研究之后,进一步研究穿心莲内酯的提取和水溶性穿心莲内酯的制备。由于磺化需用的溶剂浓硫酸、冰醋酸、醋酐等具有腐蚀、刺激性,反应条件及操作要求...作者继江西八一垦殖场医院药厂、上海中药三厂和上海医药工业研究院对穿心莲内酯磺化的研究之后,进一步研究穿心莲内酯的提取和水溶性穿心莲内酯的制备。由于磺化需用的溶剂浓硫酸、冰醋酸、醋酐等具有腐蚀、刺激性,反应条件及操作要求较高,磺化后产物较复杂。作者采用穿心莲内酯和亚硫酸钠加成的方法,同样制得水溶性穿心莲内酯,并推测其结构、制得每2 ml 含60(或100)毫克水溶性穿心莲内酯(作者命名为穿心莲 A104)的针剂,并进行了毒性、刺激性、溶血性试验,均符合要求。临床观察正在进行中。展开更多
文摘An orthogonal-design experiment with the type of L9(34) is applied to optimize the condition for sulfonation of andrographolide with concentrated sulfuric acid.The optimal sulfonation condition is established by general analysis of reacting percentage of sulfonation agent and the yield of main aim product with multi-target grading method.The multi-target grade is significantly affected by the weight ratio of concentrated sulfuric acid to andrographolide,whereas reaction time and concentration of the alkali used for neutralization have insignificant effect.The optimal condition is established as concentrated sulfuric acid reacting with half weight of andrographolide for 72 h and then neutralized by sodium hydroxide with a weight concentration of 30%.
文摘作者继江西八一垦殖场医院药厂、上海中药三厂和上海医药工业研究院对穿心莲内酯磺化的研究之后,进一步研究穿心莲内酯的提取和水溶性穿心莲内酯的制备。由于磺化需用的溶剂浓硫酸、冰醋酸、醋酐等具有腐蚀、刺激性,反应条件及操作要求较高,磺化后产物较复杂。作者采用穿心莲内酯和亚硫酸钠加成的方法,同样制得水溶性穿心莲内酯,并推测其结构、制得每2 ml 含60(或100)毫克水溶性穿心莲内酯(作者命名为穿心莲 A104)的针剂,并进行了毒性、刺激性、溶血性试验,均符合要求。临床观察正在进行中。