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    • 10. 发明申请
    • PROCESS FOR THE PREPARATION OF (S,S)-CIS-2-PHENYL-3-AMINOPIPERIDINE
    • (S,S) - 顺式-2-苯基-3-氨基哌啶的制备方法
    • WO2004037174A2
    • 2004-05-06
    • PCT/US2003/032620
    • 2003-10-15
    • PFIZER PRODUCTS, INC.DSM PHARMACEUTICALS, INC.NUGENT, Thomas, C.SEEMAYER, RobertLIANG, Jack
    • NUGENT, Thomas, C.SEEMAYER, RobertLIANG, Jack
    • A61K
    • C07D211/56Y02P20/55
    • The present invention is directed to a process for preparing (S,S)-cis-2-phenyl-3-aminopiperidine which comprises: (a) reacting the amino acid, ornithine or salt having a protecting group on the amino groups on the α and δ carbons thereof, having the formula (I) with N-methoxy-N-methylamino or salt thereof under amide forming conditions to produce an amide of the formula in the S configuration (II) (b) adding said amide to an effective amount of a Grignard reagent of the formula Ph MgX to form a ketone of the formula in the S configuration (III) (c) selectively deprotecting the amino group on the δ carbon under conditions sufficient to cyclize said ketone to form a cyclic imine and reducing the resulting imine to form a product of the formula in the (S,S) configuration (IV) and (d) removing the amino protecting group on the α-carbon to form said (S,S)-cis-2-phenyl-3-aminopiperidine, wherein P 1 and P 2 are different amino protecting groups, which are removed under different reaction conditions and X is halide. When P 1 is t-butyloxycarbonyl the above process is also used to prepare (S,S)-cis-2-phenyl-3-tertbutoxycarbonylaminopiperidine.
    • 本发明涉及制备(S,S) - 顺式-2-苯基-3-氨基哌啶的方法,其包括:(a)使具有保护基的氨基酸,鸟氨酸或盐 (I)与N-甲氧基-N-甲基氨基或其盐在酰胺形成条件下反应,生成式(II)的通式(II)的酰胺(b )将所述酰胺加入到有效量的式PhMgX的格氏试剂中以形成S构型(III)中的式(III)的酮:(c)在足以环化所述酮的条件下选择性地将δ碳上的氨基脱保护 (S,S)构型(IV)和(d)除去α-碳上的氨基保护基以形成所述(S,S)构型的产物, - 顺-2-苯基-3-氨基哌啶,其中P 1和P 2是不同的氨基保护基,其中a 在不同反应条件下重新除去,X是卤化物。 当P 1为叔丁氧基羰基时,上述方法也用于制备(S,S) - 顺式-2-苯基-3-叔丁氧基羰基氨基哌啶。