Invention Grant
- Patent Title: Method for producing five-membered ring-containing compound
- Patent Title (中): 生产五元环化合物的方法
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Application No.: US14113611Application Date: 2012-04-27
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Publication No.: US08716500B2Publication Date: 2014-05-06
- Inventor: Yujiro Hayashi
- Applicant: Yujiro Hayashi
- Applicant Address: JP Osaka
- Assignee: Ono Pharmaceutical Co., Ltd.
- Current Assignee: Ono Pharmaceutical Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-100636 20110428
- International Application: PCT/JP2012/061393 WO 20120427
- International Announcement: WO2012/147925 WO 20121101
- Main IPC: C07D307/02
- IPC: C07D307/02

Abstract:
The present invention provides a method that allows production of stereospecific and asymmetrical five-membered ring-containing compounds serving as synthetic intermediates for formation of five-membered rings of prostaglandins and the like, with high yield and excellent stereoselectivity in terms of diastereoselectivity and enantioselectivity in a short process without requiring troublesome procedures such as optical resolution. The method for producing a five-membered ring-containing compound includes a cyclization step of condensing and cyclizing an α,β-unsaturated nitro compound represented by the following chemical formula (I) with a 1,4-butanedione compound, in the presence of a catalyst formed by a compound having a pyrrolidine ring and an optically active α-carbon relative to the nitrogen on the ring, in a water-insoluble organic solvent and/or a non-oxygen atom-containing water-soluble organic solvent so as to produce the five-membered ring-containing compound represented by the following chemical formula (II).
Public/Granted literature
- US20140051874A1 METHOD FOR PRODUCING FIVE-MEMBERED RING-CONTAINING COMPOUND Public/Granted day:2014-02-20
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