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82 条记录 (耗时 0.047 秒)

    Ring-opening process for preparation of 2-chlorosulfinyl azetidinones
    61.
    发明授权
    Ring-opening process for preparation of 2-chlorosulfinyl azetidinones 失效
    开环制备2-氯亚磺酰基氮杂环丁酮的方法

    公开(公告)号：US5070195A

    公开(公告)日：1991-12-03

    申请号：US490151

    申请日：1990-03-07

    申请人： Jag M. Khanna ,  Naresh Kumar ,  Kiran Bala ,  Yatendra Kumar

    发明人： Jag M. Khanna ,  Naresh Kumar ,  Kiran Bala ,  Yatendra Kumar

    IPC分类号： C07D205/095 ,  C07D501/00

    CPC分类号： C07D501/00 ,  C07D205/095

    摘要： An improved method for preparing 2-chlorosulfinyl azetidine-4-one comprises heating a penicillin sulfoxide ester with an N-chlorohalogenating agent at a temperature of about 75.degree. C. to about 140.degree. in an inert organic solvent, and in the presence of an organic solvent insoluble, strongly basic ion exchange resin. Desirably, the ion exchange resin comprises a styrene-divinyl benzane copolymer which is about 2 to 16% cross-linked and incorporates a quaternary ammonium functionality. Such ion exchange resins are commercially available. The 2-chlorosulfinyl azetidine-4-one which is produced by this method can be cyclized in the presence of a Friedel-Crafts catalysts to afford the 3-exomethylene cepham sulfoxide ester in yields of 80-90%.

    摘要翻译： 制备2-氯亚磺酰基氮杂环丁烷-4-酮的改进方法包括在惰性有机溶剂中，在约75℃至约140℃的温度下，用N-氯代卤化剂加热青霉素亚砜酯，并在 有机溶剂不溶，强碱性离子交换树脂。 期望地，离子交换树脂包含交联的约2至16％的苯乙烯 - 二乙烯基苯基共聚物并结合季铵官能团。 这样的离子交换树脂是可商购的。 通过该方法制备的2-氯亚磺酰基氮杂环丁烷-4-酮可以在Friedel-Crafts催化剂存在下环化，得到3-异亚甲基头孢烯亚砜酯，产率为80-90％。

    Dynamic constraints for query operations
    62.
    发明授权
    Dynamic constraints for query operations 有权
    查询操作的动态约束

    公开(公告)号：US08635660B2

    公开(公告)日：2014-01-21

    申请号：US11296027

    申请日：2005-12-06

    申请人： Raymond K. Ng ,  Ganesh Kirti ,  Thomas Keefe ,  Naresh Kumar

    发明人： Raymond K. Ng ,  Ganesh Kirti ,  Thomas Keefe ,  Naresh Kumar

    IPC分类号： H04L29/06 ,  G06F17/30 ,  H04L9/32 ,  G06F17/00 ,  G06F15/16

    CPC分类号： G06F21/6227 ,  G06F2221/2105 ,  G06F2221/2149 ,  H04L63/168

    摘要： Systems, methods, and machine-readable media are disclosed for providing dynamic and/or conditional constraints on queries based on an external security policy. In one embodiment, a method is provided which comprises receiving from a user a request to access a resource. A condition clause can be read from a grant statement defined in the security policy. The grant statement can define permission for the user to access the requested resource. In some cases, the grant statement can comprise a Java Authentication and Authorization Service (JAAS) grant statement. A query associated with the requested access can be modified based on the permission granted to the user. The modified query can then be made to perform the requested access.

    摘要翻译： 公开了系统，方法和机器可读介质，用于基于外部安全策略来提供关于查询的动态和/或条件约束。 在一个实施例中，提供了一种方法，其包括从用户接收访问资源的请求。 可以从安全策略中定义的授权语句读取条件子句。 授权语句可以定义用户访问所请求资源的权限。 在某些情况下，授权语句可以包含Java认证和授权服务（JAAS）授权语句。 可以基于授予用户的权限来修改与请求的访问相关联的查询。 然后可以使修改的查询执行请求的访问。

    Methods, systems, and apparatus for variation aware extracted timing models
    64.
    发明授权
    Methods, systems, and apparatus for variation aware extracted timing models 有权
    用于变异感知提取时序模型的方法，系统和装置

    公开(公告)号：US08239798B1

    公开(公告)日：2012-08-07

    申请号：US12185072

    申请日：2008-08-02

    申请人： Ratnakar Goyal ,  Naresh Kumar ,  Harindranath Parmeswaran

    发明人： Ratnakar Goyal ,  Naresh Kumar ,  Harindranath Parmeswaran

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5031

    摘要： In one embodiment of the invention, a method of analysis of a circuit design is disclosed to generate a statistical timing model. The method includes receiving a timing graph of a circuit including arcs with a statistical function of delay, slew, or arrival time; determining primary input ports and output ports of the circuit; identifying timing pins between the input ports and the output ports of the circuit; and evaluating the timing pins from input ports to output ports to reduce the timing graph to ease analysis of the reduced timing graph with a processor.

    摘要翻译： 在本发明的一个实施例中，公开了一种分析电路设计的方法以产生统计时序模型。 该方法包括接收包括具有延迟，转换或到达时间的统计功能的电弧的电路的时序图; 确定电路的主输入端口和输出端口; 识别输入端口和电路的输出端口之间的定时引脚; 并且从输入端口到输出端口评估定时引脚以减少定时图，以便利用处理器来简化分析缩减的时序图。

    System and method for billing system interface failover resolution
    65.
    发明授权
    System and method for billing system interface failover resolution 有权
    计费系统接口故障切换解决方案的系统和方法

    公开(公告)号：US08010594B2

    公开(公告)日：2011-08-30

    申请号：US12141203

    申请日：2008-06-18

    申请人： Naresh Kumar ,  Robert Perry

    发明人： Naresh Kumar ,  Robert Perry

    IPC分类号： G06F15/16 ,  G06F15/173 ,  H04N7/16 ,  H04N7/173

    CPC分类号： H04L12/14 ,  G06F11/2033 ,  G06F11/2038 ,  G06F11/2041 ,  H04L12/1403 ,  H04L69/40 ,  H04M15/70 ,  H04M15/74 ,  H04M2215/70 ,  H04M2215/709

    摘要： A determination is made whether a first application server of a group of N application servers, N being at least two, is a coordinator of the group. Responsive to determining that the first application server is the coordinator of the group, a connection to a billing system is established, via a terminal server, by the first application server. A determination is made whether a second application server of the group of N application servers is the coordinator of the group. Responsive to determining that the second application server is not the coordinator of the group, a periodic check is made whether the second application server of the group of N application servers is the coordinator of the group. The second application server may later be determined to be the coordinator of the group, when the first server experiences difficulty. Once it is determined that the second application server now is the coordinator of the group, a connection is established to the billing system, via the terminal server, by the second application server.

    摘要翻译： 确定一组N个应用服务器的第一应用服务器是否为该组的协调器，N至少为两个。 响应于确定第一应用服务器是该组的协调器，通过终端服务器由第一应用服务器建立与计费系统的连接。 确定N个应用服务器组的第二应用服务器是否是该组的协调器。 响应于确定第二应用服务器不是组的协调器，定期检查N个应用服务器组中的第二应用服务器是否是该组的协调器。 当第一服务器遇到困难时，可以将第二应用服务器确定为该组的协调器。 一旦确定第二应用服务器现在是组的协调器，则通过第二应用服务器经由终端服务器向计费系统建立连接。

    Production of isoflavone derivatives
    67.
    发明授权
    Production of isoflavone derivatives 失效
    异黄酮衍生物的生产

    公开(公告)号：US07906660B2

    公开(公告)日：2011-03-15

    申请号：US11442369

    申请日：2006-05-25

    申请人： Andrew Heaton ,  Naresh Kumar

    发明人： Andrew Heaton ,  Naresh Kumar

    IPC分类号： C07D311/60

    CPC分类号： C07D311/56 ,  C07D311/36 ,  C07D311/38

    摘要： Methods for the hydrogenation of isoflavones are described which provide access to workable quantities of isoflavan-4-ols, isoflav-3-enes, and isoflavans. The isoflavone derivatives can be obtained in high purity and in near quantitative yields whilst employing pharmaceutically acceptable reagents and solvents.

    摘要翻译： 描述了异黄酮氢化方法，其提供了可使用量的异黄烷-4-醇，异氟烷-3-烯和异构体。 异黄酮衍生物可以以高纯度和接近定量的产率获得，同时使用药学上可接受的试剂和溶剂。

    Synthesis of cyclic compounds
    70.
    发明授权
    Synthesis of cyclic compounds 失效
    环状化合物的合成

    公开(公告)号：US06958145B2

    公开(公告)日：2005-10-25

    申请号：US10312155

    申请日：2001-06-28

    申请人： Naresh Kumar ,  Roger Wayne Read

    发明人： Naresh Kumar ,  Roger Wayne Read

    IPC分类号： A61K31/365 ,  A61P31/04 ,  A61P31/10 ,  C07B61/00 ,  C07C59/21 ,  C07C59/347 ,  C07D307/58 ,  C07D307/60 ,  C08F34/00 ,  C08F224/00 ,  C07D307/33

    CPC分类号： C07D307/58 ,  C07C59/347 ,  C07D307/60 ,  C08F224/00

    摘要： A method for the preparation of a compound of formula (II) wherein R1 and R2 are independently H, alkyl, alkoxy, oxoalkyl, alkenyl, aryl or arylalkyl whether unsubstituted or substituted, optionally interrupted by one or more hetero atoms, straight chain or branched chain, hydrophilic, hydrophobic or fluorophilic; R3, R4, R5 and R6 are independently or all hydrogen or halogen; provided that at least two of the R3, R4, R5 and R6 are halogens.

    摘要翻译： 制备式（II）化合物的方法，其中R 1和R 2独立地是H，烷基，烷氧基，氧代烷基，烯基，芳基或芳基烷基，无论是未取代的 或取代的，任选被一个或多个杂原子间隔的直链或支链，亲水的，疏水的或富含荧光的; R 3，R 4，R 5和R 6是独立地或全部是氢或卤素; 条件是R 3，R 4，R 5和R 6中的至少两个是卤素。