De-esterification process
    1.
    发明授权
    De-esterification process 失效
    脱酯过程

    公开(公告)号:US6107481A

    公开(公告)日:2000-08-22

    申请号:US352288

    申请日:1999-07-13

    CPC分类号: C07D501/00 C07D499/00

    摘要: A process to prepare the E isomer of a 3-substituted (6R,7R)-7-phenyl-acetamido-ceph-3-em-4-carboxylic acid from a mixture of the E and Z-isomer of either the corresponding tert-butyl or the corresponding 4-methoxybenzyl ester of a 3-substituted (6R,7R)-7-phenylacetamido-ceph-3-em-4-carboxylate, characterized by the application of a compound selected from the group titanium tetrachloride, tin tetrachloride and tellurium tetrachloride.

    摘要翻译: 从相应的叔丁醇的E和Z-异构体的混合物中制备3-取代的(6R,7R)-7-苯基 - 乙酰氨基 - 头孢-3-烯-4-羧酸的E异构体的方法, 丁基或相应的3-取代的(6R,7R)-7-苯基乙酰氨基 - 头孢-3-烯-4-羧酸的4-甲氧基苄基酯,其特征在于使用选自四氯化钛,四氯化锡和 四氯化碲

    Intermediates for the preparation of penicillin and cephalosporin
compounds
    7.
    发明授权
    Intermediates for the preparation of penicillin and cephalosporin compounds 失效
    用于制备青霉素和头孢菌素化合物的中间体

    公开(公告)号:US4640798A

    公开(公告)日:1987-02-03

    申请号:US761717

    申请日:1985-08-02

    CPC分类号: C07F7/10 C07D499/00 Y02P20/55

    摘要: There is described a process for preparing a sulphoxide of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4, taken individually, are alkyl, alkoxy or aryl groups, X is an alkylene group, R.sup.5 is a carboxylic acid protecting group and Y is a linking group through one or two carbon atoms forming a penam or cephem nucleus, which comprises reacting a compound of formula ##STR2## with an oxidizing agent. .alpha.-Sulphoxide compounds of formula (I) are also provided as novel intermediates.

    摘要翻译: 描述了制备式(I)的亚砜的方法,其中R 1,R 2,R 3和R 4分别为烷基,烷氧基或芳基,X为亚烷基,R 5为羧酸 保护基,Y是通过一个或两个形成一个或多个头孢烯核的碳原子的连接基团,其包括使式(II)化合物与氧化剂反应。 还提供式(I)的α-氧化亚锡化合物作为新的中间体。

    Process for the manufacture of enol derivatives
    8.
    发明授权
    Process for the manufacture of enol derivatives 失效
    制备烯醇衍生物的方法

    公开(公告)号:US4579684A

    公开(公告)日:1986-04-01

    申请号:US766684

    申请日:1985-08-19

    CPC分类号: C07D499/00 C07D205/095

    摘要: The invention concerns a process for the manufacture of 7.beta.-amino-3-cephem-3-ol-4-carboxylic acid compounds by ring closure of esters of 2-[4-(substituted-thio)-3-acylamino-2-oxoazetidin-1-yl]-3-substituted-amino-crotonic acids and solvolysing the enamino group in the resulting 7.beta.-acylamino-3-substituted-amino-cephem-4-carboxylic acid esters.

    摘要翻译: 本发明涉及通过2- [4-(取代的 - 硫代)-3-酰基氨基-2-羧酸的酯的闭环来制备7β-氨基-3-头孢烯-3-醇-4-羧酸化合物的方法, 氧代氮杂环丁烷-1-基] -3-取代的 - 氨基 - 巴豆酸,并在得到的7β-酰基氨基-3-取代 - 氨基 - 头孢烯-4-羧酸酯中溶解烯氨基。

    Process for preparing thia-aza compounds with a beta-lactam ring
    10.
    发明授权
    Process for preparing thia-aza compounds with a beta-lactam ring 失效
    用β-内酰胺环制备噻唑化合物的方法

    公开(公告)号:US4500457A

    公开(公告)日:1985-02-19

    申请号:US353288

    申请日:1982-03-01

    摘要: 2-Penem-3-carboxylic acid compounds of the formula ##STR1## in which R.sub.1 represents hydrogen, an organic radical bonded by a carbon atom to the ring carbon atom or an etherified mercapto group andR.sub.2 represents hydroxy or a radical R.sub.2.sup.A forming together with the carbonyl grouping --C(.dbd.O)-- a protected carboxyl group,1-oxides thereof, as well as salts of such compounds having salt-forming groups, in racemic and optically active form, processes for their preparation, pharmaceutical compositions containing such compounds, and their use as antibiotics, and intermediates and their processes which are useful in the production of the compounds of the formula I.

    摘要翻译: 其中R 1表示氢,通过碳原子键合到环碳原子上的有机基团或醚化的巯基,R 2表示羟基或基团R 2 A的2-蒎烯-3-羧酸化合物 与羰基-C(= O) - 被保护的羧基,其1-氧化物以及具有成盐基团的化合物的盐以外消旋和旋光形式一起形成,其制备方法,药物组合物 含有这些化合物及其作为抗生素的用途,以及可用于制备式I化合物的中间体及其方法。