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    • 2. 发明申请
    • SYNTHESIS Of DIETHYLPHOSPHONATE
    • 二乙基磷酸酯的合成
    • US20100137597A1
    • 2010-06-03
    • US12701174
    • 2010-02-05
    • Kelvin H. YongIlia A. ZavialovJianguo YinXiaoyong FuTiruvettipuram K. Thiruvengadam
    • Kelvin H. YongIlia A. ZavialovJianguo YinXiaoyong FuTiruvettipuram K. Thiruvengadam
    • C07F9/40
    • C07D405/06C07F9/58
    • This application discloses a novel process for the preparation of phosphonate esters useful as intermediates in the preparation of himbacine analogs, themselves useful as thrombin receptor antagonists. The chemistry taught herein can be exemplified by the following scheme: wherein R9 is selected from alkyl, aryl heteroaryl and arylalkyl groups having 1 to 10 carbon atoms, and R11 is selected independently for each occurrence from alkyl, aryl heteroaryl and arylalkyl groups having 1 to 10 carbon atoms and hydrogen, X2 is Cl, Br, or I; X3 is selected from Cl and Br; and PdLn is a supported palladium metal catalyst or a soluble heterogeneous palladium catalyst. The L-derivatizing reagent is a moiety which converts the alcohol functional group of compound 137D to any leaving group which can be displaced by a triorgano-phosphite phosphonating agent.
    • 本申请公开了一种制备膦酸酯的新方法,其可用作制备作为凝血酶受体拮抗剂的替卡宾类似物的中间体。 本文教导的化学实例可以通过以下方案来举例说明:其中R9选自具有1-10个碳原子的烷基,芳基杂芳基和芳基烷基,R11各自独立地选自烷基,芳基杂芳基和具有1至 10个碳原子和氢,X2是Cl,Br或I; X3选自Cl和Br; PdLn是负载型钯金属催化剂或可溶性多相钯催化剂。 L-衍生试剂是将化合物137D的醇官能团转化成可被三有机 - 亚磷酸酯膦酸酯取代的任何离去基团的部分。
    • 6. 发明授权
    • Process for the synthesis of azetidinones
    • 合成氮杂环丁酮的方法
    • US08383810B2
    • 2013-02-26
    • US13323366
    • 2011-12-12
    • Tiruvettipuram K. ThiruvengadamJohn S. ChiuXiaoyong FuTimothy L. McAllister
    • Tiruvettipuram K. ThiruvengadamJohn S. ChiuXiaoyong FuTimothy L. McAllister
    • C07D205/08C07H7/02
    • C07D205/08C07H17/02
    • A process is provided for preparing azetidinones useful as intermediates in the synthesis of penems and as hypocholesterolemic agents, comprising reacting a β-(substituted-amino)amide, a β-(substituted-amino)acid ester, or a β-(substituted-amino)thiolcarbonic acid ester with a silylating agent and a cyclizing agent selected from the group consisting of alkali metal carboxylates, quaternary ammonium carboxylates, quaternary ammonium hydroxides, quaternary ammonium alkoxides, quaternary ammonium aryloxides and hydrates thereof, or the reaction product of: (i) at least one quaternary ammonium halide and at least one alkali metal carboxylate; or (ii) at least one quaternary ammonium chloride, quaternary ammonium bromide, or quaternary ammonium iodide and at least one alkali metal fluoride, wherein a quaternary ammonium moiety of the cyclizing agent is unsubstituted or substituted by one to four groups independently selected from the group consisting of alkyl, arylalkyl and arylalkyl-alkyl.
    • 提供了一种制备氮杂环丁酮的方法,所述氮杂环丁酮可用作半乳聚糖和低胆固醇血症药物的合成中的中间体,包括使(b) - (取代的 - 氨基)酰胺,和(取代的 - 氨基)酸酯, (取代 - 氨基)硫代碳酸酯与甲硅烷基化剂和选自碱金属羧酸盐,季铵羧酸盐,季铵氢氧化物,季铵醇盐,季铵氧化物及其水合物的环化剂或其反应产物 :(i)至少一种季铵卤化物和至少一种碱金属羧酸盐; 或(ii)至少一种季铵氯化物,季铵溴化物或季铵碘化物和至少一种碱金属氟化物,其中环化剂的季铵部分是未取代的或被一至四个独立地选自 由烷基,芳烷基和芳基烷基 - 烷基组成。
    • 10. 发明申请
    • PROCESS FOR THE SYNTHESIS OF AZETIDINONES
    • 合成AZETIDINONES的方法
    • US20110144327A1
    • 2011-06-16
    • US13008458
    • 2011-01-18
    • Tiruvettipuram K. ThiruvengadamJohn S. ChiuXiaoyong FuTimothy L. McAllister
    • Tiruvettipuram K. ThiruvengadamJohn S. ChiuXiaoyong FuTimothy L. McAllister
    • C07D205/08
    • C07D205/08C07H17/02
    • A process is provided for preparing azetidinones useful as intermediates in the synthesis of penems and as hypocholesterolemic agents, comprising reacting a β-(substituted-amino)amide, a β-(substituted-amino)acid ester, or a β-(substituted-amino)thiolcarbonic acid ester with a silylating agent and a cyclizing agent selected from the group consisting of alkali metal carboxylates, quaternary ammonium carboxylates, quaternary ammonium hydroxides, quaternary ammonium alkoxides, quaternary ammonium aryloxides and hydrates thereof, or the reaction product of: (i) at least one quaternary ammonium halide and at least one alkali metal carboxylate; or (ii) at least one quaternary ammonium chloride, quaternary ammonium bromide, or quaternary ammonium iodide and at least one alkali metal fluoride, wherein a quaternary ammonium moiety of the cyclizing agent is unsubstituted or substituted by one to four groups independently selected from the group consisting of alkyl, arylalkyl and arylalkyl-alkyl.
    • 提供了一种制备氮杂环丁酮的方法,所述氮杂环丁酮可用作半乳聚糖和低胆固醇血症药物的合成中的中间体,包括使(b) - (取代的 - 氨基)酰胺,和(取代的 - 氨基)酸酯, (取代 - 氨基)硫代碳酸酯与甲硅烷基化剂和选自碱金属羧酸盐,季铵羧酸盐,季铵氢氧化物,季铵醇盐,季铵氧化物及其水合物的环化剂或其反应产物 :(i)至少一种季铵卤化物和至少一种碱金属羧酸盐; 或(ii)至少一种季铵氯化物,季铵溴化物或季铵碘化物和至少一种碱金属氟化物,其中环化剂的季铵部分是未取代的或被一至四个独立地选自 由烷基,芳烷基和芳基烷基 - 烷基组成。