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Title:
CRYSTAL OF THIENOPYRIMIDINE DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/2011/152411
Kind Code:
A1
Abstract:
Crystals are obtained by heating an aqueous suspension of 2-(3,4-dichlorobenzyl)-5-methyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidine-6-carboxylic acid. Novel crystals are obtained by adjusting the heating temperature and/or duration.

Inventors:
HAYASHI, Hiroyuki (5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-sh, Kanagawa 22, 〒2138522, JP)
林 博之 (〒22 神奈川県川崎市高津区下作延5-36-1 あすか製薬株式会社内 Kanagawa, 〒2138522, JP)
NAKAGAWA, Takayoshi (5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-sh, Kanagawa 22, 〒2138522, JP)
Application Number:
JP2011/062513
Publication Date:
December 08, 2011
Filing Date:
May 31, 2011
Export Citation:
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Assignee:
ASKA Pharmaceutical Co., Ltd. (5-1 Shibaura 2-chome, Minato-ku Tokyo, 32, 〒1088532, JP)
あすか製薬株式会社 (〒32 東京都港区芝浦二丁目5番1号 Tokyo, 〒1088532, JP)
HAYASHI, Hiroyuki (5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-sh, Kanagawa 22, 〒2138522, JP)
林 博之 (〒22 神奈川県川崎市高津区下作延5-36-1 あすか製薬株式会社内 Kanagawa, 〒2138522, JP)
International Classes:
C07D495/04; A61K31/519; A61P3/10; A61P7/02; A61P9/10; A61P9/12; A61P11/00; A61P13/02; A61P13/04; A61P13/08; A61P13/10; A61P15/10; A61P25/00; A61P25/28
Domestic Patent References:
2006-12-21
2006-12-21
Foreign References:
JP2010125362A2010-06-10
Other References:
YUKI KAGOBUTSU KESSHO SAKUSEI HANDBOOK 25 July 2008, pages 57 - 59
See also references of EP 2594570A1
Attorney, Agent or Firm:
TAKASHIMA, Hajime (Meiji Yasuda Seimei Osaka Midosuji Bldg, 1-1 Fushimimachi 4-chome, Chuo-ku, Osaka-sh, Osaka 44, 〒5410044, JP)
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Claims: