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
    • 3. 发明授权
    • Process for the preparation of
7-amino-1-dethia-1-oxa-3-hydroxymethyl-cephem-4-carboxylic acids
    • 制备7-氨基-1-脱硫-1-氧杂-3-羟甲基头孢烯-4-羧酸的方法
    • US4496723A
    • 1985-01-29
    • US506731
    • 1983-06-20
    • Dieter HoppeHeinz-Werner Kleemann
    • Dieter HoppeHeinz-Werner Kleemann
    • A61K31/535A61P31/04C07D319/06C07D405/06C07D498/04C07D498/14C07D505/00C07D513/10
    • C07D405/06C07D319/06C07D505/00C07D513/10
    • Compounds which themselves are antibacterially active and/or which are useful as intermediates for producing antibacterially active materials such as penicillins and cephalosporins are obtained by the following syntheses:Benzyl-2-(2,2-dimethyl-1,3-dioxan-5-ylidene)-2(N-formyl-1)-aminoacetate to benzyl-2,2-dimethylspiro-[1,3-dioxane-5,5'-1',3-thiazoline]-4'-carboxylate to benzyl 2-(2,2-dimethyl-1,3-dioxan-5-ylidene)-2[N-(methylthiomethylene)-amino] acetate to benzyl 2-(trans-3-azido-4-methylthio-2-oxo-1-azetidinyl)-2-(2,2-dimethyl-1,3-dioxan-5-ylidene) acetate to benzyl 2(trans-3-benzoylamino-4-methylthio-1-azetidinyl)-2-(2,2-dimethyl-1,3-dioxan-5-ylidene) acetate to either (1) benzyl 2-(7-oxo-3-phenyl-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-en-6-yl)-2-(2,2-dimethyl-1.3-dioxan-5-ylidene)acetate or (2) benzyl 2-(trans-3-benzoylamino-4-chloro-1-azetidinyl)-2-(2,2-dimethyl-1,3-dioxan-5-ylidene) acetate and then to the product benzyl-7-benzoylamino-1-dethia-1-oxa-3-hydroxymethyl-cephem-4-carboxylate.
    • 通过以下合成得到本身具有抗菌活性和/或可用作生产抗菌活性物质如青霉素和头孢菌素的中间体的化合物:苄基-2-(2,2-二甲基-1,3-二恶烷-5-基) 亚基)-2(N-甲酰基-1) - 氨基乙酸酯向苄基-2,2-二甲基螺 - [1,3-二恶烷-5,5'-1',3-噻唑啉] -4'-羧基末端加成苄基2 - (2,2-二甲基-1,3-二恶烷-5-亚基)-2 [N-(甲基亚硫代亚甲基) - 氨基]乙酸酯向2-(反式-3-叠氮基-4-甲硫基-2-氧代-1 -2-(2,2-二甲基-1,3-二恶烷-5-亚基)乙酸酯向苄基2(反式-3-苯甲酰基氨基-4-甲硫基-1-氮杂环丁烷基)-2-(2,2-二甲基-1,3-二恶烷-5-亚基) (1)苄基2-(7-氧代-3-苯基-4-氧杂-2,6-二氮杂双环[3.2.0]庚-2-烯-2-酮) 吡啶-6-基)-2-(2,2-二甲基-1,3-二恶烷-5-亚基)乙酸酯或(2)2-(反式-3-苯甲酰基氨基-4-氯-1-氮杂环丁烷基)-2-(2 ,2-二甲基-1,3-二氧代-5-亚基)乙酸酯,然后向产物中加入苄基-7-苯甲酰氨基-1-脱硫-1-氧杂-3-羟甲基头孢-4-基 羧基吃。