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    • 155. 发明授权
    • Asymmetric synthesis method, related raw material and preparation method of (S,S)-2,8-diazabicyclo[4,3,0]nonane
    • 不对称合成方法,相关原料及(S,S)-2,8-二氮杂双环[4,3,0]壬烷的制备方法
    • US09238648B2
    • 2016-01-19
    • US13977526
    • 2012-09-20
    • SHANGHAI PUYI CHEMICAL TECHNOLOGY CO., LTD
    • Xiaobo ShentuYantao QiLingshi XieBo Wang
    • C07D207/00C07D471/04C07D207/24C07D207/14C07D207/27
    • C07D471/04C07D207/14C07D207/24C07D207/27Y02P20/55
    • The present invention relates to an asymmetric synthesis method of a chiral intermediate (S,S)-2,8-diazabicyclo[4,3,0]nonane (I) of moxifloxacin, wherein an imide or enamine compound is obtained by dehydration reaction of the pyrrolidine-3-ketone as shown in formula (II) and chiral amine(R)-1-phenylethylamine, followed by the reduction of the imide or enamine compound to obtain a compound of formula (III) or (IV) having the chiral structure of formula (I), and then a compound of formula (I) is obtained by intramolecular cyclization, and removal of the chiral auxiliary group and amino-protecting group. The present invention also relates to pyrrolidine-3-ketone as shown in formula (II) and a preparation method therefor, and in the formula (I), (II), (III), (IV), R is an amino-protecting group, especially C1-4 alkoxycarbonyl, benzyloxycarbonyl or benzyl which can be removed by hydrolysis or hydrogenation. Z═H2 or O; when Z═H2, Y is chlorine, bromine, iodine, methanesulfonate, tosylate, hydroxyl or hydroxyl with protection; and when Z═O, Y is OR1, and R1 is C1-4 alkyl.
    • 本发明涉及莫西沙星手性中间体(S,S)-2,8-二氮杂双环[4,3,0]壬烷(I)的不对称合成方法,其中酰亚胺或烯胺化合物是通过 (II)所示的吡咯烷-3-酮和手性胺(R)-1-苯基乙胺,然后还原酰亚胺或烯胺化合物,得到具有手性的式(III)或(IV)的化合物 式(I)的结构,然后通过分子内环化获得式(I)化合物,并除去手性辅助基团和氨基保护基。 本发明还涉及式(II)所示的吡咯烷-3-酮及其制备方法,式(I),(II),(III),(IV)中R是氨基保护基 基团,特别是可以通过水解或氢化除去的C 1-4烷氧基羰基,苄氧基羰基或苄基。 Z = H 2或O; 当Z = H 2时,Y为氯,溴,碘,甲磺酸酯,甲苯磺酸酯,羟基或羟基保护; 当Z = O时,Y为OR 1,R 1为C 1-4烷基。