NOVEL CRYSTAL FORM OF TRICYCLIC BENZOPYRAN COMPOUND AND PRODUCTION METHOD THEREOF

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-dih...

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Bibliographic Details
Main Authors UMEDA, YASUHIRO, KAWAHARA, SHIRO, TAKADA, YASUTAKA, KAMON, MIYAKO
Format Patent
LanguageEnglish
French
Published 04.11.2010
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary: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.
Bibliography:Application Number: CA20102759073