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    • 2. 发明授权
    • Process for producing optically active pyrrolidine derivatives
    • 光学活性吡咯烷衍生物的制备方法
    • US5942629A
    • 1999-08-24
    • US976491
    • 1997-11-24
    • Yoshifumi YuasaTsukasa SotoguchiNobuo Seido
    • Yoshifumi YuasaTsukasa SotoguchiNobuo Seido
    • B01J31/24C07B61/00C07D207/08C07D207/09C07D207/26
    • C07D207/08C07D207/09C07D207/26
    • A production process for obtaining optically active (3R,1'S)-1-benzyl-3-�(1'-N-methylamino)ethyl!pyrrolidine or (3R,1'S)-3-�(1'-N-methylamino)ethyl!pyrrolidine used as an intermediate for the synthesis of pharmaceutical preparations such as anti-fungal agents in high purity and in high yield using a reduced number of processing steps. The process comprises asymmetrically hydrogenating 3-acetyl-1-benzyl-2-pyrrolidinone in the presence of a complex formed from bidentate phosphine and ruthenium as a catalyst to provide (3S,1'R)-1-benzyl-3-�(1'-hydroxy)ethyl!-2-pyrrolidinone, then reducing with a hydride to provide (3R,1'R)-1-benzyl-3-�(1'-hydroxy)ethyl!pyrrolidine, mesylating or tosylating to provide (3R,1'R)-1-benzyl-3-�(1'-methanesulfonyloxy)ethyl!pyrrolidine or (3R,1'R)-1-benzyl-3-�(1'-p-toluenesulfonyloxy)ethyl!pyrrolidine, and reacting with methylamine to obtain (3R,1'S)-1-benzyl-3-�(1'-N-methylamino)ethyl!pyrrolidine. The prcess may further comprise de-benzylating (3R,1'S)-1-benzyl-3-�(1'-N-methylamino)ethyl!pyrrolidine to obtain (3R,1'S)-3-�(1'-N-methylamino)ethyl!pyrrolidine.
    • 制备光学活性(3R,1'S)-1-苄基-3 - [(1'-N-甲基氨基)乙基]吡咯烷或(3R,1'S)-3 - [(1'-N-甲基氨基)乙基 ]吡咯烷,其用作用于合成药物制剂例如抗真菌剂的中间体,其使用减少数量的加工步骤以高纯度和高产率。 该方法包括在二齿膦和钌作为催化剂形成的络合物存在下不对称氢化3-乙酰基-1-苄基-2-吡咯烷酮,得到(3S,1'R)-1-苄基-3 - [(1 然后用氢化物还原得到(3R,1'R)-1-苄基-3 - [(1'-羟基)乙基]吡咯烷,甲磺酰化或甲苯磺酸化,得到(3R ,1'R)-1-苄基-3 - [(1'-甲磺酰氧基)乙基]吡咯烷或(3R,1'R)-1-苄基-3 - [(1'-对甲苯磺酰氧基)乙基] 并与甲胺反应,得到(3R,1'S)-1-苄基-3 - [(1'-N-甲基氨基)乙基]吡咯烷。 进一步包括脱苄基化(3R,1'S)-1-苄基-3 - [(1'-N-甲基氨基)乙基]吡咯烷,得到(3R,1'S)-3 - [(1'-N-甲基氨基 )乙基]吡咯烷。
    • 4. 发明授权
    • Process for the preparation of piperidinylidene derivative
    • 制备亚哌啶基衍生物的方法
    • US6008358A
    • 1999-12-28
    • US69114
    • 1998-04-29
    • Takenobu NishikawaNobuo Seido
    • Takenobu NishikawaNobuo Seido
    • B01J31/22C07B61/00C07D211/70C07D211/34C07D211/60C07D211/76
    • C07D211/70
    • Disclosed is a process for economic, safe and simple production of a 2-phenyl-2-(2'-piperidinylidene)acetate derivative at a reduced number of steps in a high yield, which comprises allowing 2,3,4,5-Tetrahydro-6-methoxypyridine and a benzyl cyanide derivative represented by the following general formula (2): wherein R.sup.1 represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom or an amino group, to undergo condensation reaction in the presence of an organic base such as 1,8-diazabicyclo[5.4.0]-7-undecene or a transition metal complex as a catalyst to produce a 2-phenyl-2-(2'-piperidinylidene)acetonitrile derivative represented by the following general formula (4): ##STR1## wherein R.sup.1 is as defined above; and the wavy line indicates a geometrical isomer, and then reacting with an alcohol in the presence of hydrogen chloride.
    • 公开了以高产率以减少数量的步骤经济,安全和简单地生产2-苯基-2-(2'-亚哌啶基)乙酸酯衍生物的方法,其包括使2,3,4,5-四氢 -6-甲氧基吡啶和由以下通式(2)表示的苄基氰化物衍生物:其中R1表示氢原子,低级烷基,低级烷氧基,卤素原子或氨基,在 存在有机碱如1,8-二氮杂双环[5.4.0] -7-十一碳烯或过渡金属络合物作为催化剂,以制备由以下化合物表示的2-苯基-2-(2'-亚哌啶基)乙腈衍生物 通式(4):其中R1如上所定义; 并且波浪线表示几何异构体,然后在氯化氢存在下与醇反应。