Process for the production of a cephamycin derivative
    3.
    发明授权
    Process for the production of a cephamycin derivative 失效
    生产头孢霉素衍生物的方法

    公开(公告)号:US4302580A

    公开(公告)日:1981-11-24

    申请号:US185594

    申请日:1980-09-09

    CPC分类号: C12P35/08

    摘要: A chemotherapeutic, antibacterial agent, 7.beta.-[(2D-2-amino-2-carboxy)ethylthioacetamido]-7.alpha.-methoxy-3-[(1-methyl-1H-tetrazole-5-yl)thiomethyl]-3-cephem-4-carboxylic acid is produced economically and efficiently starting from cephamycin A and/or B by a "new route" process comprising the consecutive steps of reaction of cephamycin with 5-mercapto-1-methyl-1H-tetrazole; protection of the terminal amino group thereof by acylation; protection of the two carboxyl groups thereof by esterification; replacement of the acyl group initially having attached to the 7-amino group by a halogenoacetyl group; deprotection of the blocked 4-carboxyl group; and condensation of D-cysteine with the halogenoacetyl group attaching to the 7-amino group.

    摘要翻译: 7β-[(2D-2-氨基-2-羧基)乙硫基乙酰氨基]-7α-甲氧基-3 - [(1-甲基-1H-四唑-5-基)硫代甲基] -3- 头孢霉素-4-羧酸从头孢霉素A和/或B开始通过包含头孢霉素与5-巯基-1-甲基-1H-四唑的连续步骤的“新途径”方法经济有效地产生; 通过酰化保护其末端氨基; 通过酯化保护其两个羧基; 用卤代乙酰基取代最初连接在7-氨基上的酰基; 封闭的4-羧基脱保护; 和D-半胱氨酸与连接于7-氨基的卤代乙酰基缩合。

    Fermentation process
    4.
    发明授权
    Fermentation process 失效
    发酵过程

    公开(公告)号:US3922202A

    公开(公告)日:1975-11-25

    申请号:US52799374

    申请日:1974-11-29

    申请人: MERCK & CO INC

    IPC分类号: C12P35/08 C12D9/00

    摘要: Increased yields of a mixture of the known and useful antibiotics cephamycin A and B are obtained by the addition of Llysine or L- or DL- Alpha -aminoadipic acid to fermentation media composed of complex organic or chemically defined nutrients.

    摘要翻译: 已知和有用的抗生素头孢霉素A和B的混合物的产率提高通过将L-赖氨酸或L-或DL-α-氨基己二酸加入到由复合有机或化学定义的营养素组成的发酵培养基中而获得。

    Fermentation process
    5.
    发明授权
    Fermentation process 失效
    发酵过程

    公开(公告)号:US3769169A

    公开(公告)日:1973-10-30

    申请号:US3769169D

    申请日:1971-05-20

    申请人: MERCK & CO INC

    发明人: BIRNBAUM J INAMINE E

    CPC分类号: C12P35/08 Y10S435/886

    摘要: A method for improving the yield of 7-(D-5-amino-5carboxylvaleramido)-3-(carbamoyloxymethyl)-7-methoxy-3-cephem -4carboxylic acid by adding to fermentation media an additive selected from glycine, L-phenylalanine, a carbamate or an amide, or combinations thereof. The product is a new antibiotic produced from a new strain of Streptomyces; it exhibits activity against gram-negative and gram-positive bacteria.

    摘要翻译: 一种提高7-(D-5-氨基-5-羧基戊酰氨基)-3-(氨基甲酰氧基甲基)-7-甲氧基-3-头孢烯-4-羧酸的收率的方法,通过向发酵培养基中加入选自甘氨酸, L-苯丙氨酸,氨基甲酸酯或酰胺,或其组合。 该产品是由新型链霉菌生产的新型抗生素; 它表现出对革兰氏阴性和革兰氏阳性菌的活性。

    Cephem compounds and their production
    6.
    发明授权
    Cephem compounds and their production 失效
    头孢烯化合物及其生产

    公开(公告)号:US4667027A

    公开(公告)日:1987-05-19

    申请号:US681783

    申请日:1984-12-14

    CPC分类号: C12P35/06 C12P35/08

    摘要: A compound of the formula: ##STR1## wherein R.sup.1 stands for hydrogen or formylamino, R.sup.2 is a residue of amino acid selected from the group consisting of serine and alanine, or a peptide of at least one of these amino acids, or hydrogen, R.sup.3 stands for --NH--C(.dbd.NH)--NH.sub.2 or --CH.sub.2 NH.sub.2, or its salt, which can be produced by cultivating a microorganism belonging to the genus Xanthomonas, is useful as a therapeutic agent against infectious disease caused by bacteria.

    摘要翻译: 下式的化合物:其中R1代表氢或甲酰氨基,R2是选自丝氨酸和丙氨酸的氨基酸残基,或这些氨基酸中的至少一个的肽或氢,R3 代表通过培养属于黄单胞菌属的微生物产生的-NH-C(= NH)-NH 2或-CH 2 NH 2或其盐可用作抗细菌感染性疾病的治疗剂。