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公开(公告)号:US5412119A
公开(公告)日:1995-05-02
申请号:US11547
申请日:1993-02-01
IPC分类号: C07B53/00 , C07C213/00 , C07C215/04 , C07C215/24 , C07C215/34 , C07C217/08 , C07C217/70 , C07C233/36 , C07C253/30 , C07C255/26 , C07C311/05 , C07C317/28 , C07C323/25 , C07F7/18 , C07D315/00 , C07C215/00
CPC分类号: C07C217/70 , C07C213/00 , C07C215/24 , C07C215/34 , C07C217/08 , C07F7/184 , C07F7/1852 , C07F7/1892 , Y02P20/55
摘要: The present invention is concerned with the preparation of N-substituted vicinal aminoalcohol derivatives from the corresponding hydroxyl-protected cyanohydrin derivatives by successive partial reduction, transimination using a primary amine, reduction of the resulting imine and optional removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the starting cyanohydrin derivatives.The present invention is also concerned with certain new enantiomerically pure hydroxyl-protected vicinal aminoalcohols.
摘要翻译: 本发明涉及通过连续部分还原,使用伯胺进行转移,还原所得亚胺和任选除去羟基保护基,由相应的羟基保护的氰醇衍生物制备N-取代的连位氨基醇衍生物。 取决于起始羟腈衍生物的立体化学组成,产物以外消旋体或光学纯的形式获得。 本发明还涉及某些新的对映异构体纯的羟基保护的邻氨基醇。
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公开(公告)号:US5189219A
公开(公告)日:1993-02-23
申请号:US810139
申请日:1991-12-19
IPC分类号: C07F7/18 , C07B53/00 , C07C213/00 , C07C213/02 , C07C215/30 , C07C215/52 , C07C215/60
CPC分类号: C07C213/02 , C07C213/00 , C07C215/30 , Y02P20/55
摘要: The present invention is concerned with the preparation of erythro N-substituted vicinal aminoalcohol derivatives from hydroxyl-protected cyanohydrin derivatives by successive Grignard reaction, transimination using a primary amine, reduction of the resulting imine and removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the cyanohydrin derivatives.
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公开(公告)号:USRE35128E
公开(公告)日:1995-12-19
申请号:US255954
申请日:1994-06-07
IPC分类号: C07F7/18 , C07B53/00 , C07C213/00 , C07C213/02 , C07C215/30 , C07C215/52 , C07C215/60 , C07C209/52
CPC分类号: C07C213/02 , C07C213/00 , C07C215/30 , Y02P20/55
摘要: The present invention is concerned with the preparation of erythro N-substituted vicinal aminoalcohol derivatives from hydroxyl-protected cyanohydrin derivatives by successive Grignard reaction, transimination using a primary amine, reduction of the resulting imine and removal of the hydroxyl-protecting group. The products are obtained either as a racemate or in an optically pure form, depending upon the stereochemical composition of the cyanohydrin derivatives.
摘要翻译: 本发明涉及由羟基保护的氰醇衍生物通过连续格氏反应制备赤式N-取代的邻位氨基醇衍生物,使用伯胺进行转移,还原所得亚胺和除去羟基保护基。 取决于羟腈衍生物的立体化学组成,产物可以以外消旋体或光学纯的形式获得。
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