2-isocephem and oxacephem derivatives and use as antibacterial agents
    2.
    发明授权
    2-isocephem and oxacephem derivatives and use as antibacterial agents 失效
    2-异头孢菌素和奥曲匹林衍生物,并用作抗菌剂

    公开(公告)号:US6080855A

    公开(公告)日:2000-06-27

    申请号:US227758

    申请日:1999-01-08

    摘要: Compounds of formula (I) or salts thereof: ##STR1## wherein R.sup.1 is hydrogen, methoxy or formamido; R.sup.2 is an acyl group; CO.sub.2 R.sup.3 is a carboxy group or a carboxylate anion, or R.sup.3 is a carboxy protecting group, pharmaceutically acceptable salt-forming group or in vivo hydrolysable ester group; R.sup.4 represents hydrogen or up to four substituents; X is O, S, SO or SO.sub.2 ; Y is O, S, SO or SO.sub.2 ; n is 0 or 1; and m is 1 or 2. The compounds have antibacterial activity. Methods of synthesis of, and pharmaceutical formulations containing, compounds (I) are also described.

    摘要翻译: 式(I)化合物或其盐:其中R1是氢,甲氧基或甲酰氨基; R2是酰基; CO 2 R 3是羧基或羧酸根阴离子,或R 3是羧基保护基,药学上可接受的成盐基团或体内可水解的酯基; R4代表氢或至多四个取代基; X是O,S,SO或SO 2; Y是O,S,SO或SO 2; n为0或1; m为1或2.化合物具有抗菌活性。 还描述了合成方法和含有化合物(I)的药物制剂。

    Thiooxime cephalosporin derivatives
    4.
    发明授权
    Thiooxime cephalosporin derivatives 失效
    硫氧嘧啶衍生物

    公开(公告)号:US4109084A

    公开(公告)日:1978-08-22

    申请号:US748425

    申请日:1976-12-08

    申请人: Eric M. Gordon

    发明人: Eric M. Gordon

    CPC分类号: C07D499/00

    摘要: Compounds of the formula ##STR1## wherein A is ##STR2## R is hydrogen, lower alkyl, benzyl, p-methoxybenzyl, p-nitrobenzyl, diphenylmethyl, tri(lower alkyl)silyl, lower alkoxymethyl, 2,2,2-trichloroethyl, ##STR3## Y is halogen or lower alkoxy; R.sub.1 is lower alkyl, phenyl, or substituted phenyl; and X is hydrogen, lower alkanoyloxy, ##STR4## or certain heterothio groups; R.sub.4 is hydrogen or lower alkyl; R.sub.5 is lower alkyl; are disclosed. These compounds, particularly the free acids, possess the useful pharmacological property of inhibiting .beta.-lactamase enzymes as well as being useful as intermediates, particularly where R is a readily cleavable ester, in the preparation of antibacterially active 6.alpha.-methoxy penicillins and 7.alpha.-methoxy cephalosporins.

    摘要翻译: 式中的化合物是氢,低级烷基,苄基,对甲氧基苄基,对硝基苄基,二苯基甲基,三(低级烷基)甲硅烷基,低级烷氧基甲基, 三氯乙基,Y是卤素或低级烷氧基; R 1是低级烷基,苯基或取代的苯基; X是氢,低级烷酰氧基,或者某些杂硫基; R4是氢或低级烷基; R5是低级烷基; 被披露。 这些化合物,特别是游离酸具有抑制β-内酰胺酶的有用的药理学性质,并且可用作中间体,特别是其中R是易裂解的酯,在制备抗菌活性6α-甲氧基青霉素和7α 甲氧基头孢菌素。

    Process for preparing 7-aminocephalosporanic acid derivatives
    5.
    发明授权
    Process for preparing 7-aminocephalosporanic acid derivatives 失效
    制备7-氨基头孢烷酸衍生物的方法

    公开(公告)号:US4079180A

    公开(公告)日:1978-03-14

    申请号:US650701

    申请日:1976-01-20

    CPC分类号: C07D501/20 C07D501/04

    摘要: 7-Aminocephalosporanic acid derivatives represented by the general formula (III), ##STR1## wherein X is hydrogen, hydroxyl, acetate or a nucleophilic residue, which are useful as a starting material for the synthesis of cephalosporin type antibiotics low in toxicity and broad in pharmacological effect can be easily prepared by allowing to react cephalosporin C or its derivative represented by the general formula (I), ##STR2## wherein X is as defined above, or a salt thereof with an .alpha.-keto derivative represented by the general formula (II), ##STR3## wherein R.sub.1 is carboxyl, aroyl or amide when R.sub.2 is hydrogen, and is carboxyl when R.sub.2 is alkyl or aryl, or its salt. In this case, the yield of the 7-aminocephalosporanic acid derivatives can be remarkably improved by carrying out the reaction in the presence of hydrogen peroxide. The yield can be further improved by adding thiosulfuric acid or a salt thereof after the completion of the reaction to decompose the unreacted hydrogen peroxide.

    摘要翻译: 由通式(III)表示的7-氨基头孢烷酸衍生物,其中X是氢,羟基,乙酸酯或亲核残基,其可用作合成低毒性的头孢菌素型抗生素的起始原料 通过使头孢菌素C或其通式(I)表示的衍生物,其中X如上定义的其中的X,或其盐与α-酮衍生物反应,可以容易地制备药理作用广泛 由式(II)表示,当R 2为氢时,R 1为羧基,芳酰基或酰胺,当R 2为烷基或芳基时为羧基,或其盐。 在这种情况下,通过在过氧化氢存在下进行反应,可以显着提高7-氨基头孢烷酸衍生物的产率。 通过在反应完成后加入硫代硫酸或其盐分解未反应的过氧化氢,可以进一步提高收率。

    Cephalosporins
    6.
    发明授权
    Cephalosporins 失效
    头孢菌素

    公开(公告)号:US4008227A

    公开(公告)日:1977-02-15

    申请号:US483083

    申请日:1974-06-25

    CPC分类号: C07D501/36

    摘要: A compound of the formula: ##STR1## wherein R.sup.1 represents mandeloyl or 2-(3-sydnone)-acetyl group and R.sup.2 represents a hydrogen atom, a halogen, an alkyl or an alkoxyl group, or a pharmaceutically accetable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria as well as gram-positive ones. Examples thereof include 7-[D-(-)-mandelamido]-3-[6'-(3'-methylpyridazinyl)-thio-methyl]-3-cephem-4-carboxylic acid 2'-oxide, 7-[D-(-)-mandelamido]-3-[6'-(3'-methoxypyridazinyl)-thiomethyl]-3-cephem-4-carboxylic acid 1'-oxide, and 7-[2'-(3'-sydnone)acetamido]-3-[6"-(3"-methylpyridazinyl)-thiomethyl]-3-cephem-4-carboxylic acid 2"-oxide.

    摘要翻译: 其中R1表示戊烯基或2-(3-硅氧烷) - 乙酰基,R2表示氢原子,卤素,烷基或烷氧基,或其药学上可接受的盐的下式的化合物: 具有广泛的抗菌谱,特别是对革兰氏阴性细菌以及革兰氏阳性细菌有效。 其实例包括7- [D - ( - ) - 扁桃酰氨基] -3- [6' - (3'-甲基哒嗪基) - 硫代甲基] -3-头孢烯-4-羧酸2'-氧化物,7- [ D - ( - ) - 扁桃酰氨基] -3- [6' - (3'-甲氧基哒嗪基) - 硫甲基] -3-头孢烯-4-羧酸1'-氧化物和7- [2' - (3'- sydnone)乙酰氨基] -3- [6“ - (3” - 甲基哒嗪基) - 硫甲基] -3-头孢烯-4-羧酸2“ - 氧化物。