4-halogeno-2-oxyimino-3-oxobutyric acids and derivatives
    1.
    发明授权
    4-halogeno-2-oxyimino-3-oxobutyric acids and derivatives 失效
    4-卤代-2-氧代亚氨基-3-氧代丁酸及其衍生物

    公开(公告)号:US4845257A

    公开(公告)日:1989-07-04

    申请号:US50332

    申请日:1987-05-18

    CPC分类号: C07F7/1852

    摘要: A method of producing a 4-halo-2-(substituted or unsubstituted)hydroxyimino-3-oxobutyric acid ester or amide, which is a synthetic intermediate of value for the production of cephalosporins containing an aminothiazole group, characterized by reacting a 2-(substituted or unsubstituted)-hydroxyimino-3-oxobutyric acid or an ester or amide thereof with a silylating agent and reacting the resulting novel 2-(substituted)hydroxyimino-3-silyloxy-3-butenoic acid ester or amide with a halogenating agent.

    摘要翻译: 制备4-卤代-2-(取代或未取代的)肟基-3-氧代丁酸酯或酰胺的方法,其是含有氨基噻唑基团的头孢菌素的合成中间值,其特征在于使2-( 取代或未取代的) - 羟基亚氨基-3-氧代丁酸或其酯或酰胺与甲硅烷基化剂反应,并使所得新的2-(取代的)肟基-3-甲硅烷氧基-3-丁烯酸酯或酰胺与卤化剂反应。

    Method for producing cephem compounds
    2.
    发明授权
    Method for producing cephem compounds 失效
    头孢烯化合物的制备方法

    公开(公告)号:US5162522A

    公开(公告)日:1992-11-10

    申请号:US691307

    申请日:1991-04-25

    摘要: A method for producing 3-(3-oxobutyryloxymethyl)-3-cepham-4-carboxylic acids which are antibiotics or intermediates for the synthesis of antibiotics, at a low temperature in a very short period of time and in good yield, characterized by reacting a 3-hydroxylmethyl-3-cephem-4-carboxylic acid with diketene in the presence of a 4-(tertiary-amino)pyridine and if necessary, when a 7-acylamino-3-(3-oxobutyryloxymethyl)-3-cephem-4-carboxylic acid is obtained, subjecting it to deacylation at the 7-position thereof.

    摘要翻译: 一种生产3-(3-氧代丁酰氧基甲基)-3-头孢烯-4-羧酸的方法,它是抗生素或用于合成抗生素的中间体,在非常短的时间内以低的温度和良好的产率,其特征在于反应 3-羟基甲基-3-头孢烯-4-羧酸与4-(叔 - 氨基)吡啶存在下的双烯酮,如果需要,当7-酰基氨基-3-(3-氧代丁酰氧基甲基)-3-头孢烯-4-羧酸 得到4-羧酸,使其在其7-位脱羟基。

    Method for production of cephalosporin compounds
    7.
    发明授权
    Method for production of cephalosporin compounds 失效
    生产头孢菌素化合物的方法

    公开(公告)号:US4980464A

    公开(公告)日:1990-12-25

    申请号:US373594

    申请日:1989-06-30

    摘要: A method for producing a compound of the formula; ##STR1## wherein R stands for a hydrogen atom, an acyl group or a protective group other than acyl groups, Q stands for a hydrogen atom or an ester residue, Y stands for the residue of a nucleophilic compound and the dotted line shows the double bond at 2- or 3- position of the cephem ring or a salt thereof, characterized by allowing a compound of the formula; ##STR2## [R, Q and the dotted line are of the same meaning as above] or a salt thereof to react with a nucleophilic compound or a salt thereof and a compound of the formula; ##STR3## wherein R.sup.1, R.sup.2, R.sup.3 independently stand for a hydrocarbon group having not more than 8 carbon atoms, or R.sup.1 and R.sup.2, R.sup.1 and R.sup.3 or R.sup.2 and R.sup.3 may be combined to form polymethylene group, according to which the end product [I] of high quality can be provided in a high yield by one reaction step by using the compound [III] of relatively low cost, thus the method of this invention is advantageous for mass-producing the compound [I] on an industrial scale from the compound [II] and a nucleophilic compound.

    摘要翻译: 一种制备式的化合物的方法; 其中R表示氢原子,酰基或除酰基以外的保护基,Q表示氢原子或酯残基,Y表示亲核性化合物的残基,虚线表示 表示头孢烯环的2-或3-位上的双键或其盐,其特征在于允许下式的化合物: [II] [R,Q和虚线具有与上述相同的含义]或其盐与亲核化合物或其盐和下式化合物反应; 其中R 1,R 2,R 3独立地表示不多于8个碳原子的烃基,或者R 1和R 2,R 1和R 3或R 2和R 3可以组合形成多亚甲基,其中 通过使用相对低成本的化合物[III],可以通过一次反应步骤以高产率提供高质量的最终产物[I],因此本发明的方法有利于大量生产化合物[I] 化合物[II]和亲核化合物的工业规模。

    Method for production of cephalosporin compounds
    9.
    发明授权
    Method for production of cephalosporin compounds 失效
    生产头孢菌素化合物的方法

    公开(公告)号:US4801703A

    公开(公告)日:1989-01-31

    申请号:US928752

    申请日:1986-08-18

    CPC分类号: C07F9/657181 C07F9/65744

    摘要: A novel method of producing a cephalosporin compound of the formula ##STR1## wherein R.sup.1 is a hydrogen atom or an acyl group; R is a hydrogen atom or an ester residue; the dotted line means a double bond in 2- or 3-position of the cephem ring; and R.sup.4 is a nucleophilic compound residue, or a salt thereof, directedly in one step from a compound of the formula ##STR2## wherein R.sup.1, R and the dotted line have the meanings defined above, or a salt thereof, by reacting in the presence of an organic solvent the compound [II] or a salt thereof, a nucleophilic compound or a salt thereof, and (1) a trivalent or pentavalent cyclic phosphorus compound having a partial structure of the formula ##STR3## wherein W is an oxygen atom, a sulfur atom or NR.sup.2 ; W.sup.1 is an oxygen atom, a sulfur atom or NR.sup.3 ; and R.sup.2 and R.sup.3 may be the same or different and each means a hydrogen atom or a hydrocarbon group, or a salt thereof, or (2) a reaction product of a compound having a partial structure of the formula ##STR4## wherein W and W.sup.1 have the same meaning as defined above, or a salt thereof, with a phosphorus oxyhalide, trihalide or pentahalide.

    摘要翻译: 一种制备式(I)的头孢菌素化合物的新方法,其中R1是氢原子或酰基; R是氢原子或酯残基; 虚线表示头孢烯环的2-或3-位的双键; 并且R 4是一个步骤中的一个步骤的亲核化合物残基或其盐,其中R1,R和虚线具有上述定义的化合物或其盐,通过使式 在有机溶剂的存在下,化合物[II]或其盐,亲核化合物或其盐,和(1)具有下式的部分结构的三价或五价环磷化合物其中W是 氧原子,硫原子或NR 2; W1是氧原子,硫原子或NR3; R 2和R 3可以相同或不同,表示氢原子或烃基或其盐,或者(2)具有式“IMAGE”的部分结构的化合物的反应产物,其中W和W 1 具有与上述定义相同的含义或其盐与卤氧化磷,三卤化物或五卤化物。

    Crystals of sodium cephemcarboxylate
    10.
    发明授权
    Crystals of sodium cephemcarboxylate 失效
    头孢羧酸钠的晶体

    公开(公告)号:US4692519A

    公开(公告)日:1987-09-08

    申请号:US674745

    申请日:1984-11-26

    CPC分类号: C07D501/36

    摘要: Novel crystals of sodium 7.beta.-[2-(2-aminothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-[(1,2,3-thiadiazol-5-yl)thiomethyl] ceph-3-em-4-carboxylate showing characteristic peaks at interplanar spacings (d) of 9.3, 8.9, 5.3, 5.1, 4.4, 4.3 and 3.8 .ANG. in the powder X-ray diffraction pattern which are very stable and do not easily cause discoloration and decomposition.

    摘要翻译: -3β-[2-(2-氨基噻唑-4-基) - (Z)-2-甲氧基亚氨基乙酰氨基] -3 - [(1,2,3-噻二唑-5-基)硫代甲基] (d)为9.3,8.9,5.3,5.1,4.4,4.3和3.8的粉末X射线衍射图中的特征峰,其非常稳定并且不容易引起变色, 分解。