检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:蔡基玮 杨康 刘通 冀亚飞[1] 赵建宏[1] CAI Jiwei;YANG Kang;LIU Tong;JI Yafei;ZHAO Jianhong(School of Pharmacy,East China University of Science and Technology,Shanghai 200237)
出 处:《中国医药工业杂志》2020年第7期834-836,共3页Chinese Journal of Pharmaceuticals
摘 要:以4-甲基苯磺酰氯代替三溴化磷,与6,6-二甲基-3-羟基-4-炔-1-庚烯(2)在二氯甲烷和三乙胺中反应得(E)-6,6-二甲基-2-庚烯-4-炔-1-(4-甲基苯磺酸酯)(3),然后3与N-甲基-1-萘甲胺(4)发生缩合得盐酸特比萘芬(1),纯度99.6%。由于4-甲基苯磺酸酯基的立体效应,中间体3的E/Z比例可从原工艺的3∶1提高到40∶1,总收率(以2计)从43%提高到59%。4-Methylbenzenesulfonyl chloride instead of phosphorus tribromide reacted with 6,6-dimethyl-3-hydroxy-4-yne-1-heptene(2)in DCM and trimethylamine to give(E)-6,6-dimethyl-2-heptene-4-yne-1-(4-methylbenzenesulfonate)(3).Then compound 3 was condensed with N-methyl-1-naphthylamine(4)to obtain terbinafine hydrochloride(1)with a purity of 99.6%.Due to the steric effect of the 4-methylbenzenesulfonate group,the ratio of E/Z for compound 3 was increased from 3∶1 to 40∶1,and the total yield was increased from 43%to 59%(based on 2).
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.15