发明授权
US5559242A Method of preparing enantiomerically-pure
3-methyl-5-(1-alkyl-2(S)-pyrrolidinyl) isoxazoles
失效
制备对映体纯的3-甲基-5-(1-烷基-2(S) - 吡咯烷基)异恶唑的方法
- 专利标题: Method of preparing enantiomerically-pure 3-methyl-5-(1-alkyl-2(S)-pyrrolidinyl) isoxazoles
- 专利标题(中): 制备对映体纯的3-甲基-5-(1-烷基-2(S) - 吡咯烷基)异恶唑的方法
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申请号: US591806申请日: 1996-01-25
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公开(公告)号: US5559242A公开(公告)日: 1996-09-24
- 发明人: Nan-Horng Lin , Yun He , Steven J. Wittenberger
- 申请人: Nan-Horng Lin , Yun He , Steven J. Wittenberger
- 申请人地址: IL Abbott Park
- 专利权人: Abbott Laboratories
- 当前专利权人: Abbott Laboratories
- 当前专利权人地址: IL Abbott Park
- 主分类号: C07D413/04
- IPC分类号: C07D413/04 ; C07D261/06
摘要:
A novel process for preparing enantiomerically-pure 3-methyl-5-(1-(C.sub.1 -C.sub.3 -alkyl)-2-pyrrolidinyl)isoxazole in high yield, wherein a protected 2-oxo-pyrrolidine starting material is reacted with a suitable organic anion and a resulting beta-keto oxime intermediate is cyclized and dehydrated.
公开/授权文献
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