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    • 1. 发明授权
    • Process for producing optically active threo-3-amino-1,2-epoxy compounds
    • 光学活性苏氨酸-3-氨基-1,2-环氧化合物的制备方法
    • US06376685B1
    • 2002-04-23
    • US09600215
    • 2000-07-12
    • Yukihiro SagawaJouji SekineHisao Sato
    • Yukihiro SagawaJouji SekineHisao Sato
    • C07D30102
    • C07C303/28C07D303/36C07C309/66
    • Highly pure optically active threo-3-amino-1,2-epoxy compounds appropriate for materials for manufacturing drugs and a process for producing the same on an industrial scale. An optically active threo-3-amino-1,2-diol derivative is subjected in an organic solvent in the presence of a base to alkylsufonylation or arylsulfonylation to thereby give the corresponding optically active threo-3-amino-2-hydroxy-1-sulfonyloxy compound. Next, the resultant product is subjected to epoxidation in the presence of a base to give the corresponding optically active threo-3-amino-1,2-epoxy compound. The thus obtained epoxy compound is purified by using an organic solvent and water, thus giving a highly pure epoxy compound.
    • 适用于制造药物的材料的高纯度旋光活性苏氨酸-3-氨基-1,2-环氧化合物及其制备方法。 光学活性的苏氨酸-3-氨基-1,2-二醇衍生物在碱的存在下在有机溶剂中进行烷基磺酰化或芳基磺酰化,得到相应的光学活性的苏氨酸-3-氨基-2-羟基-1- 磺酰氧基化合物。 接着,将所得产物在碱的存在下进行环氧化,得到相应的光学活性的苏氨酸-3-氨基-1,2-环氧化合物。 由此获得的环氧化合物通过使用有机溶剂和水进行纯化,从而得到高纯度的环氧化合物。
    • 6. 发明授权
    • Process for the preparation of an oxirane, aziridine or cyclopropane
    • 制备环氧乙烷,氮丙啶或环丙烷的方法
    • US06559323B1
    • 2003-05-06
    • US09423428
    • 2000-02-28
    • John Richard StudleyVarinder Kumar Aggarwal
    • John Richard StudleyVarinder Kumar Aggarwal
    • C07D30102
    • C07D303/22C07D203/02C07D301/02C07D303/04C07D303/08C07D303/46C07D327/06C07D333/54C07D333/78C07D405/04C07D495/08Y10S436/903
    • A process for the preparation of an oxirane, aziridine or cyclopropane of formula (I), wherein X is oxygen, NR4 or CHR5; R1 is hydrogen, alkyl, aryl, heteroaromatic, heterocyclic or cycloalkyl; R2 is hydrogen, alkyl, aryl, heteroaromatic, CO2R8, CHR14NHR13, heterocyclic or cycloalkyl; or R1 and R2 join together to form a cycloalkyl ring; R3 and R10 are, independently, hydrogen, alkyl, aryl, heteroaromatic, CO2R8, R83Sn, CONR8R9, trialkylsilyl or triarylsilyl; R4 is an electron withdrawing group; R5 is alkyl, cycloalkyl, aryl, heteroaromatic, SO2R8, SO3R8, COR8, CO2R8, CONR8R9, PO(R8)2, PO(OR8)2 or CN; R8 and R9 are independently alkyl or aryl; and R13 and R14 are independently hydrogen, alkyl or aryl is provided. The process comprises degrading a compound of formula (II), (IIa), (IIb) or (IIc): wherein R3 and R10 are as defined above; Y is a cation; depending on the nature of Y, r is 1 or 2; and L is a suitable leaving group, to form a diazo compound. The diazo compound is reacted with a suitable transition metal catalyst, and the product thereof reacted with a sulphide of formula SR6R7, wherein R6 and R7 are independently alkyl, aryl or heteroaromatic, or R6 and R7 join together to form an optionally substituted ring which optionally includes an additional heteroatom. This product is then reacted with an aldehyde, ketone, imine or alkene.
    • 制备式(I)的环氧乙烷,氮丙啶或环丙烷的方法,其中X是氧,NR 4或CHR 5; R 1是氢,烷基,芳基,杂芳族,杂环或环烷基; R2是氢,烷基,芳基,杂芳族,CO2R8,CHR14NHR13,杂环或环烷基; 或R 1和R 2连接在一起形成环烷基环; R 3和R 10独立地是氢,烷基,芳基,杂芳族,CO 2 R 8,R 83 Sn,CONR 8 R 9,三烷基甲硅烷基或三芳基甲硅烷基; R4是吸电子基团; R5是烷基,环烷基,芳基,杂芳族,SO2R8,SO3R8,COR8,CO2R8,CONR8R9,PO(R8)2,PO(OR8)2或CN; R8和R9独立地是烷基或芳基; R 13和R 14独立地为氢,提供烷基或芳基。 该方法包括降解式(II),(IIa),(IIb)或(IIc)化合物:其中R 3和R 10如上所定义; Y是阳离子; 取决于Y的性质,r为1或2; 并且L是合适的离去基团,以形成重氮化合物。 将重氮化合物与合适的过渡金属催化剂反应,其产物与式SR6R7的硫化物反应,其中R 6和R 7独立地为烷基,芳基或杂芳族,或R 6和R 7连接在一起形成任选取代的环, 包括另外的杂原子。 然后将该产物与醛,酮,亚胺或烯烃反应。