Invention Grant
US08835684B2 Preparation of 2R,3S-N-isobutyl-N-(2-hydroxy-3-amino-4-phenylbutyl)-p-nitrobenzenesulfonylamide hydrochloride and other derivatives of 2-hydroxy-1,3-diamines
有权
制备2R，3S-N-异丁基-N-（2-羟基-3-氨基-4-苯基丁基） - 对硝基苯磺酰胺盐酸盐和2-羟基-1,3-二胺的其它衍生物
- Patent Title: Preparation of 2R,3S-N-isobutyl-N-(2-hydroxy-3-amino-4-phenylbutyl)-p-nitrobenzenesulfonylamide hydrochloride and other derivatives of 2-hydroxy-1,3-diamines
- Patent Title (中): 制备2R，3S-N-异丁基-N-（2-羟基-3-氨基-4-苯基丁基） - 对硝基苯磺酰胺盐酸盐和2-羟基-1,3-二胺的其它衍生物
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Application No.: US12840832Application Date: 2010-07-21
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Publication No.: US08835684B2Publication Date: 2014-09-16
- Inventor: Aslam A. Malik , Hasan Palandoken , Joy A. Stringer , Roland P. Carlson , John Leach , Thomas G. Archibald , Robert G. Miotke
- Applicant: Aslam A. Malik , Hasan Palandoken , Joy A. Stringer , Roland P. Carlson , John Leach , Thomas G. Archibald , Robert G. Miotke
- Applicant Address: US CA Rancho Cordova
- Assignee: Ampac Fine Chemicals LLC
- Current Assignee: Ampac Fine Chemicals LLC
- Current Assignee Address: US CA Rancho Cordova
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: C07C303/38
- IPC: C07C303/38 ; C07C269/06 ; C07C303/40 ; C07C311/17 ; C07C311/18
Abstract:
The present invention provides a new process for the preparation of 2R,3S-N-isobutyl-N-(2-hydroxy-3-amino-4-phenylbutyl)-p-nitrobenzenesulfonylamide hydrochloride, wherein this compound is prepared directly from the chloromethylalcohol. Importantly, the process of the present invention results in higher yields of 2R,3S-N-isobutyl-N-(2-hydroxy-3-amino-4-phenylbutyl)-p-nitrobenzenesulfonylamide hydrochloride without sacrificing its purity. The processes of the present invention can be used to prepare not only the 2R,3S-derivative, but also the 2S,3S-, 2S,2R- and the 2R,3R-derivatives.
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