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
    • 1. 发明授权
    • 7-.alpha.Hydrazinoacetamido derivatives of cephalosporanic
    • 7- {60头孢菌素的肼基-N-乙酰氨基衍生物
    • US3998950A
    • 1976-12-21
    • US563135
    • 1975-03-28
    • Renato BroggiGiuseppe LibassiGiorgio Pifferi
    • Renato BroggiGiuseppe LibassiGiorgio Pifferi
    • A61K20060101A61K31/545C07D20060101C07D205/08C07D213/04C07D279/06C07D333/04C07D501/06C07D501/20C07D501/22C07D501/24C07D501/26C07D501/32C07D501/34C07D501/38C07D501/42C07D501/60
    • C07D501/20Y02P20/55
    • Derivatives of 7-aminocephalosporanic acid of the formula: ##STR1## wherein the carbon atom marked with an asterisk represents an asymmetry center of the molecule, A represents an aromatic nucleus, preferably phenyl which may be substituted by alkyl having 1-4 carbon atoms, halogen, hydroxy or alkoxy having 1-4 carbon atoms, or a heterocyclic nucleus, preferably 2- or 3-thiophene which may be, for example, substituted by halogen, R represents a hydrogen atom or a straight or branched chain lower alkyl radical, R.sub.1 represents a hydrogen atom, a hydroxy group, an acetoxy or pyridinium group. The invention includes the compounds as such or in the form of separated epimers as well as the corresponding pharmaceutically acceptable salts with alkali or alkaline-earth metals, with suitable organic bases or corresponding suitable organic or inorganic acid addition salts. Also method of preparing same. The compounds have powerful antibacterial action against gram-positive and gram-negative bacteria.
    • 7-氨基头孢烷酸的衍生物,具有下式:其中标有星号的碳原子代表分子的不对称中心,A代表芳香核,优选苯基,其可被具有1-4个碳原子的烷基取代 碳原子,卤素,羟基或具有1-4个碳原子的烷氧基,或杂环核,优选可以被卤素取代的2-或3-噻吩,R表示氢原子或直链或支链低级 烷基,R 1表示氢原子,羟基,乙酰氧基或吡啶鎓基。 本发明包括这样的化合物或分离的差向异构体的形式,以及与碱金属或碱土金属的相应的药学上可接受的盐,以及合适的有机碱或相应​​的合适的有机或无机酸加成盐。 还有制备方法。 这些化合物对革兰氏阳性和革兰氏阴性细菌具有强大的抗菌作用。