会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明授权
    • Process for the preparation of cephalosporins intermediates
    • 制备头孢菌素中间体的方法
    • US5387679A
    • 1995-02-07
    • US988961
    • 1993-03-15
    • Loris SogliDaniele TerrassanGiuseppe Ribaldone
    • Loris SogliDaniele TerrassanGiuseppe Ribaldone
    • C07D501/00C07D501/04C07D501/18C07D501/26C07D501/36A61K31/545
    • C07D501/00Y02P20/55
    • The present invention relates to a process for preparing a compound of formula (I) ##STR1## wherein R is an heterocyclic group which contains at least one nitrogen atom with or without oxygen or sulphur and R.sup.1 and R.sup.2 are both hydrogen atoms or one of them is an hydrogen atom and the other is an acyl group; the process comprising reacting a compound of formula (II) ##STR2## wherein R.sup.1 and R.sup.2 are each as defined above, and wherein, if necessary, any reactive group is protected by a suitable protective group, or a salt thereof, with a compound of formula (III)R--SH (III)wherein R is as defined above, or a salt thereof, in the presence of an acid and of a compound of formula (IV) ##STR3## wherein each of R.sup.3 and R.sup.4 is a C.sub.1 -C.sub.4 alkyl group or R.sup.3 and R.sup.4 taken together are a C.sub.2 or C.sub.3 alkylene chain and, if necessary, removing the protective groups possibly present.The compounds of formula (I) are useful intermediates in the synthesis of Cefazolin and Cefazedone.
    • PCT No.PCT / EP92 / 01595 Sec。 371日期1993年3月15日 102(e)1993年3月15日PCT提交1992年7月14日PCT公布。 出版物WO93 / 02085 本发明涉及一种制备式(I)化合物的方法,其中含有或不具有氧或硫的至少一个氮原子,且R 1和R 2均为氢原子或其中之一 是氢原子,另一个是酰基; 该方法包括使式(II)化合物其中R 1和R 2各自如上所定义,并且其中如有必要,任何反应性基团被合适的保护基或其盐保护,其中 式(III)化合物其中R如上定义的R-SH(III)或其盐在酸和式(IV)化合物的存在下,其中R 3 并且R 4是C 1 -C 4烷基或R 3和R 4一起是C 2或C 3亚烷基链,并且如果需要,除去可能存在的保护基团。 式(I)化合物是合成头孢唑啉和头孢唑酮的有用中间体。
    • 12. 发明授权
    • Process for the preparation of new intermediates useful in the synthesis
of cephalosporins
    • 制备可用于合成头孢菌素的新中间体的方法
    • US5945414A
    • 1999-08-31
    • US982351
    • 1997-12-02
    • Loris SogliDaniele TerrassanErmanno BernasconiFrancisco Salto
    • Loris SogliDaniele TerrassanErmanno BernasconiFrancisco Salto
    • C12P17/14A61K31/545A61K31/546A61P31/04C07D501/04C07D501/28C07D501/36C12P35/02
    • C12P35/02
    • Cefazolin, cefazedone, cefoperazone, cefamandole, cefatrizine or ceftriaxone is prepared by reacting glutaryl 7-ACA of the formula: ##STR1## with a compound of formula (II):R--SH (II)wherein R is 5-methyl-1,3,4-thiadiazol-2-yl, 1H-1,2,3-triazol-4-yl, 1-methyl-tetrazol-5-yl or1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-1,2,4-triazin-3-yl group, and R.sup.1 and R.sup.2 are both hydrogen and the other is an acyl group, in an aqueous solution in an amount of 3-5 mols per mol of glutaryl 7-ACA to about 90.degree. C. and for a time from about 2 to about 10 hours;optionally recovering the excess of the compound of formula (II), thereby preparing a compound of formula (III) in an aqueous solution: ##STR2## wherein R is as above defined and optionally deacylating said compound of formula (III); andconverting the resulting compound of formula (I) ##STR3## wherein R, R.sup.1 and R.sup.2 are as defined above in the presence of a non-chlorinated solvent into one of said cephalosporins.
    • 通过使下式的戊二酰7 -ACA与式(II)化合物反应来制备头孢唑啉,头孢噻肟,头孢哌酮,头孢匹多,头孢曲松或头孢曲松:R-SH(II)其中R是5-甲基-1,3,4 - 噻二唑-2-基,1H-1,2,3-三唑-4-基,1-甲基 - 四唑-5-基或1,2,5,6-四氢-2-甲基-5,6-二氧代 -1,2,4-三嗪-3-基,R 1和R 2均为氢,另一个为酰基,在每摩尔戊二酰7-ACA至约3-5摩尔量的水溶液中至约 90℃和约2至约10小时的时间; 任选地回收过量的式(II)化合物,从而在水溶液中制备式(III)化合物:其中R如上所定义,并任选地使所述式(III)化合物脱酰; 并将所得的式(I)化合物在非氯化溶剂的存在下转化为所述头孢菌素之一,其中R,R 1和R 2如上定义。