C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 499/18 (2006.01) A61K 31/44 (2006.01) C07D 499/88 (2006.01)
Patent
CA 2044840
Abstract of the disclosure CRYSTALLINE PENEM, ITS PRODUCTION AND USE Crystalline (+)-(5R,6S)-6-[(R)-1-hydroxyethyl]-3- (3-pyridyl)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2- carboxylic acid pivaloyloxymethyl ester having a diffraction pattern which shows main peaks at spacing of 12.8, 8.8, 5.6, 4.44, 4.36, and 4.2 .ANG. according to powder X-ray diffraction is disclosed. The crystalline penem compound is useful for an antibacterial agent. .
Ishibashi Yukio
Maeda Yoshiharu
Tsukamoto Tetsuya
Fetherstonhaugh & Co.
Takeda Chemical Industries Ltd.
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