NOVEL CRYSTAL FORM OF TRICYCLIC BENZOPYRAN COMPOUND AND PRODUCTION METHOD THEREOF
[PROBLEMS TO BE SOLVED] To provide crystal forms of (3R, 4S)-7-hydroxymethyl-2,2,9-trimethyl-4-(phenethylamino)-3,4-dihydro-2H-pyrano[2,3-g]quinolin-3-ol that are excellent as a drug, and production methods thereof. [MEANS FOR SOLVING THE PROBLEMS] Production methods including crystallizing (3R, 4S)...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
27.12.2012
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Subjects | |
Online Access | Get full text |
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Summary: | [PROBLEMS TO BE SOLVED] To provide crystal forms of (3R, 4S)-7-hydroxymethyl-2,2,9-trimethyl-4-(phenethylamino)-3,4-dihydro-2H-pyrano[2,3-g]quinolin-3-ol that are excellent as a drug, and production methods thereof. [MEANS FOR SOLVING THE PROBLEMS] Production methods including crystallizing (3R, 4S)-7-hydroxymethyl-2,2,9-trimethyl-4-(phenethylamino)-3,4-dlhydro-2H-pyrano[2,3-g]quinolin-3-ol from an acetate ester solvent, an aliphatic hydrocarbon solvent, a nitrile solvent, an aromatic hydrocarbon solvent, a ketone solvent or an ether solvent, and crystal forms obtained according to the methods. |
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Bibliography: | Application Number: ZA20110007662 |