Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
To provide novel crystals useful as an ingredient for the production of a diabetes remedy. The invention is concerned with α-form crystal and β-form crystal of (R)-2-(2-aminothiazol-4-yl)-4′-[2-[(2-hydroxy-2-phenylethyl)amino]ethyl]acetanilide. The α-form crystal does not exhibit hygroscopicity and has stability such that it can be used as a medicine, and is useful for mass synthesis in the industrial production. The β-form crystal does not relatively exhibit hygroscopicity and is also useful as a production intermediate of the α-form crystal.
patent: 6346532 (2002-02-01), Maruyama et al.
patent: 6627642 (2003-09-01), Kimura et al.
patent: 6706733 (2004-03-01), Kimura et al.
patent: 7342117 (2008-03-01), Kawazoe et al.
patent: 466952 (1992-01-01), None
patent: 11-255649 (1999-09-01), None
patent: 2000-212168 (2000-08-01), None
patent: WO-99/20607 (1999-04-01), None
International Search Report, for PCT/JP02/11217, dated Jan. 28, 2003.
Rouhi, Chemical and Engineering News, Feb. 24, 2003, pp. 32-35, especially p. 32.
Astellas Pharma Inc.
Finnegan Henderson Farabow Garrett & Dunner LLP
Stockton Laura L.
α-form or β-form crystal of acetanilide derivative does not yet have a rating. At this time, there are no reviews or comments for this patent.If you have personal experience with α-form or β-form crystal of acetanilide derivative, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and α-form or β-form crystal of acetanilide derivative will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2708834