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    • 5. 发明申请
    • CHIRAL REDUCTIONS OF IMINES LEADING TO THE SYNTHESES OF OPTICALLY ACTIVE AMINES
    • 导致光活性氨基酸合成的基因组的减少
    • WO1997011934A1
    • 1997-04-03
    • PCT/US1996015506
    • 1996-09-27
    • NPS PHARMACEUTICALS, INC.
    • NPS PHARMACEUTICALS, INC.VAN WAGENEN, Bradford, C.BARMORE, Robert, M.
    • C07C209/52
    • C07C209/52
    • A process for preparing an R enantiomer of a compound of formula (I) wherein Me is methyl, Ar is 3-methoxyphenyl, 3-chlorophenyl, or 1-naphthyl, and X is independently selected from the group consisting of H, F, Cl, Br, I, phenyl, CF3, CF2H, CFH2, lower alkyl (e.g., Me), O-lower alkyl (e.g., OMe), OCH2CF3, OH, CN, NO2, C(O)-lower alkyl (e.g., C(O)Me), C(O)O-lower alkyl (e.g., C(O)OMe), C(O)NH-lower alkyl (e.g., C(O)NH-Me), C(O)N-lower alkyl2 (e.g., C(O)NMe2), OC(O)-lower alkyl (e.g., OC(O)Me), and NH-C(O)-lower alkyl (e.g., NH-C(O)Me), where "lower alkyl" is selected from a group consisting of 1 to 6 carbon atoms, and m is an integer between 1 and 5, by asymmetrically and enantioselectively reducing an imine with a reducing agent/chiral auxiliary agent complex so as to produce an enantiomeric excess of R enantiomer of the compound of formula (I) over the S enantiomer of the compound of formula (I). The process is especially useful to produce compounds (R)-(+)-N-[1-(3-methoxyphenyl)ethyl]-3-(2-chlorophenyl)propanamine and (R)-(+)-N-[1-(3-methoxyphenyl)ethyl]-3-(phenyl)propanamine. Enantiomeric excess of the R enantiomer over S enantiomer of greater than 65 % have been achieved.
    • 制备式(I)化合物的R对映异构体的方法,其中Me是甲基,Ar是3-甲氧基苯基,3-氯苯基或1-萘基,X独立地选自H,F,Cl ,Br,I,苯基,CF 3,CF 2 H,CFH 2,低级烷基(例如Me),O-低级烷基(例如OMe),OCH 2 CF 3,OH,CN,NO 2,C(O) - 低级烷基 (O)Me),C(O)O-低级烷基(例如C(O)OMe),C(O)NH-低级烷基(例如C(O)NH-Me) 低级烷基2(例如C(O)NMe 2),OC(O) - 低级烷基(例如OC(O)Me)和NH-C(O) - 低级烷基(例如NH-C(O) 其中“低级烷基”选自1至6个碳原子,m为1至5之间的整数,通过用还原剂/手性助剂络合物不对称和对映选择性还原亚胺,以产生 式(I)化合物的R对映体与式(I)化合物的S对映异构体的对映异构体过量。 该方法特别适用于制备化合物(R) - (+) - N- [1-(3-甲氧基苯基)乙基] -3-(2-氯苯基)丙胺和(R) - (+) - N- [ - (3-甲氧基苯基)乙基] -3-(苯基)丙胺。 R对映异构体超过S对映异构体的对映异构体过量已达到大于65%。