3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as
intermediates for antibiotics
    92.
    发明授权
    3-trifuoromethylsulfonyloxy-substituted 1-carbacephalosporins as intermediates for antibiotics 失效
    3-三氟甲基磺酰氧基取代的1-碳水化合物作为抗生素的中间体

    公开(公告)号:US4820816A

    公开(公告)日:1989-04-11

    申请号:US233088

    申请日:1988-08-17

    IPC分类号: C07D463/00 C07D221/02

    CPC分类号: C07D463/20

    摘要: 7.beta.-Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carboxylic acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises reacting a 3-triflate ester with a lithium halide in an aprotic polar solvent.

    摘要翻译: 提供了7β-乙酰氨基-3-三氟甲基磺酰氧基-1-咔唑-3-头孢烯-4-羧酸抗生素化合物,其酯和盐,以及相应的7-氨基和被保护的7-氨基-1-碳头孢菌素。 3-三氟甲基磺酰氧基取代的α-碳霉素也可用于制备3-卤代-1-碳霉素的方法,其包括在非质子极性溶剂中使3-三氟甲磺酸酯与卤化锂反应。

    Controlled regeneration of zea diploperennis hybrids and breeding
strategies therewith
    93.
    发明授权
    Controlled regeneration of zea diploperennis hybrids and breeding strategies therewith 失效
    玉米双倍体杂种的控制再生和育种策略

    公开(公告)号:US4810649A

    公开(公告)日:1989-03-07

    申请号:US13403

    申请日:1987-02-11

    摘要: This invention provides a method for high frequency plant regeneration from somatic stem donor tissue of field grown Zea diploperennis, a diploid, perennial corn ancestor with high tillering capacity. This species is used as a parent in a maize improvement strategy to transfer the unique traits of high tillering and plantlet regeneration capacity into cultivated corn. After 3-4 subcultures of cultured somatic tissues on a primary medium, small callus fragments are transferred to a secondary medium devoid of the auxin, 2,4-D. After a few days, numerous shoots regenerate and develop into normal plantlets which are then separated and transferred to a tertiary medium for root development. The selection of somaclonal variants form cultured somatic cells of interspecific hybrids between corn and teosinte are used for the synthesis of unique breeding lines suited for development of improved corn varieties. A protocol for gene transfer employing recombinant DNA techniques is also described.

    摘要翻译: 本发明提供了一种用于高产植物再生的方法,该方法来自田间生长的玉米杓鼠的体细胞茎供体组织,二倍体,具有高分蘖能力的多年生玉米祖先。 该物种用作玉米改良策略的母体,将高分蘖和小植株再生能力的独特性状转化为栽培玉米。 在主培养基上培养的体细胞组织3-4次培养后,将小的愈伤组织片段转移到没有生长素2,4-D的二级培养基中。 几天后,许多芽再生并发育成正常的小植株,然后将其分离并转移到用于根发育的第三培养基中。 选择体细胞克隆变体形成培养的玉米和teosinte之间种间杂种的体细胞,用于合成适合发展改良玉米品种的独特育种系。 还描述了使用重组DNA技术进行基因转移的方案。

    Tissue cultures of Lycopersicon spp.
    94.
    发明授权
    Tissue cultures of Lycopersicon spp. 失效
    番茄的组织培养

    公开(公告)号:US4734369A

    公开(公告)日:1988-03-29

    申请号:US525106

    申请日:1983-08-22

    CPC分类号: A01H1/06 C12N5/0025

    摘要: A method is provided of producing variant plant varieties of Lycopersicon spp. by tissue culture techniques employing 6-benzyladenine at high concentrations. The technique produces phenotypic variants that are the result of heritable nuclear genetic changes.

    摘要翻译: 提供了一种生产番茄的变异植物品种的方法。 通过组织培养技术以高浓度使用6-苄基腺嘌呤。 该技术产生了可遗传的核遗传变化的结果的表型变体。

    7-acylamino-(or
7-amino)-3-trifluoromethylsulfonyloxy-1-carba(1-dethia)-3-cephem-4-carbo
xylic acids and esters thereof
    95.
    发明授权
    7-acylamino-(or 7-amino)-3-trifluoromethylsulfonyloxy-1-carba(1-dethia)-3-cephem-4-carbo xylic acids and esters thereof 失效
    7-酰基氨基 - (或7-氨基)-3-三氟甲基磺酰氧基-1-碳(1-脱氢)-3-头孢烯-4-羧酸及其酯

    公开(公告)号:US4673737A

    公开(公告)日:1987-06-16

    申请号:US761647

    申请日:1985-08-02

    CPC分类号: C07D463/20 C07D463/22

    摘要: 7.beta.-Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carboxylic acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises reacting a 3-triflate ester with a lithium halide in an aprotic polar solvent.

    摘要翻译: 提供了7β-乙酰氨基-3-三氟甲基磺酰氧基-1-咔唑-3-头孢烯-4-羧酸抗生素化合物,其酯和盐,以及相应的7-氨基和被保护的7-氨基-1-碳头孢菌素。 3-三氟甲基磺酰氧基取代的α-碳霉素也可用于制备3-卤代-1-碳霉素的方法,其包括在非质子极性溶剂中使3-三氟甲磺酸酯与卤化锂反应。

    Controlled regeneration of corn plants and breeding strategies therewith
    96.
    发明授权
    Controlled regeneration of corn plants and breeding strategies therewith 失效
    玉米植物的控制再生和育种策略

    公开(公告)号:US4659668A

    公开(公告)日:1987-04-21

    申请号:US597472

    申请日:1984-04-06

    摘要: This invention provides a method for high frequency plant regeneration from somatic stem donor tissue of field grown Zea diploperennis, a diploid, perennial corn ancestor with high tillering capacity. This species is used as a parent in a maize improvement strategy to transfer the unique traits of high tillering and plantlet regeneration capacity into cultivated corn. After 3-4 subcultures of cultured somatic tissues on a primary medium, small callus fragments are transferred to secondary medium devoid of the auxin, 2,4-D. After a few days, numerous shoots regenerate and develop into normal plantlets which are then separated and transferred to a tertiary medium for root development. The selection of somaclonal variants form cultured somatic cells of interspecific hybrids between corn and teosinte are used for the synthesis of unique breeding lines suited for development of improved corn varieties. A protocol for gene transfer employing recombinant DNA techniques is also described.

    摘要翻译: 本发明提供了一种用于高产植物再生的方法,该方法来自田间生长的玉米杓鼠的体细胞茎供体组织,二倍体,具有高分蘖能力的多年生玉米祖先。 该物种用作玉米改良策略的母体,将高分蘖和小植株再生能力的独特性状转化为栽培玉米。 在主培养基上培养的体细胞组织3-4次培养后,将小的愈伤组织片段转移到没有生长素2,4-D的二级培养基中。 几天后,许多芽再生并发育成正常的小植株,然后将其分离并转移到用于根发育的第三培养基中。 选择体细胞克隆变体形成培养的玉米和teosinte之间种间杂种的体细胞,用于合成适合发展改良玉米品种的独特育种系。 还描述了使用重组DNA技术进行基因转移的方案。

    Bucket wheels and bucket wheel reclaimers
    97.
    发明授权
    Bucket wheels and bucket wheel reclaimers 失效
    斗轮和斗轮回收机

    公开(公告)号:US4445608A

    公开(公告)日:1984-05-01

    申请号:US285331

    申请日:1981-07-22

    IPC分类号: E02F3/24 B65G17/36

    CPC分类号: E02F3/243

    摘要: A bucket wheel for a bucket wheel unloader has a series of buckets mounted on pivots around its periphery so that the buckets can be displaced between opposite end positions to correspond with either direction of rotation of the wheel. Latching means engage the buckets to retain them in their required end positions and operate automatically when the direction of rotation of the wheel is reversed.

    摘要翻译: 用于斗轮卸载机的斗轮具有围绕其周边枢转安装的一系列铲斗,使得铲斗可以在相对的端部位置之间移位,以对应于车轮的任一方向。 锁定装置接合铲斗以将它们保持在其所需的端部位置,并且当车轮的旋转方向相反时自动操作。

    Cyclopentene sulfoxides
    98.
    发明授权
    Cyclopentene sulfoxides 失效
    环戊烯亚砜

    公开(公告)号:US4058567A

    公开(公告)日:1977-11-15

    申请号:US687422

    申请日:1976-05-17

    申请人: David A. Evans

    发明人: David A. Evans

    摘要: The novel synthesis of chemical compounds of the structures 1 and 2 is disclosed. ##STR1## wherein R.sub.1 is a member of the group consisting of alkyl, (cis or trans) alkenyl and alkynyl groups of from 2 to 9 carbon atoms which can be substituted by a terminal 1,3-dioxyacyclopentyl, a carboxyl or a carboalkoxy (--COOR') group where R' is an alkyl group of 1 to 6 carbon atoms. Compounds 1 and 2 are shown to be useful intermediates in prostaglandin synthesis.

    摘要翻译: 公开了结构1和2的化合物的新颖合成。 其中R 1是由可被末端1,3-二氧环戊基,羧基或烷氧羰基取代的2至9个碳原子的烷基,(顺或反)烯基和炔基组成的组中的成员( -COOR')基团,其中R'是1至6个碳原子的烷基。 化合物1和2被证明是前列腺素合成中有用的中间体。