C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 491/052 (2006.01)
Patent
CA 2759073
Crystal forms of (3R,4S)-7-hydroxymethyl-2,2,9-trimethyl-4-(phenethylamino)-3,4-dihydro-2H-pyrano[2,3-g]qunolin-3-ol, which is an excellent medicine, and processes for producing the crystal forms. The processes comprise crystallizing (3R,4S)-7-hydroxymethyl-2,2,9-trimethyl-4-(phenethylamino)-3,4-dihydro-2H-pyrano[2,3-g]qunolin-3-ol from an acetic acid ester solvent, an aliphatic hydrocarbon solvent, a nitrile solvent, an aromatic hydrocarbon solvent, a ketone solvent, or an ether solvent. The crystal forms are obtained by the processes.
La présente invention concerne des formes cristallines du (3R,4S)-7-hydroxyméthyl-2,2,9-triméthyl-4-(phénéthylamino)-3,4-dihydro-2H-pyrano[2,3-g]quinolin-3-ol, qui est un excellent médicament, et des procédés de production des formes cristallines. Les procédés comprennent la cristallisation du (3R,4S)-7-hydroxyméthyl-2,2,9-triméthyl-4-(phénéthylamino)-3,4-dihydro-2H-pyrano[2,3-g]quinolin-3-ol à partir d'un solvant d'ester de l'acide acétique, d'un solvant hydrocarboné aliphatique, d'un solvant nitrile, d'un solvant hydrocarboné aromatique, d'un solvant cétone, ou d'un solvant éther. Les formes cristallines sont obtenues par les procédés.
Kamon Miyako
Kawahara Shiro
Takada Yasutaka
Umeda Yasuhiro
Gowling Lafleur Henderson Llp
Nissan Chemical Industries Ltd.
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