Crystalline forms of (3S-trans)-2-[3,4-dihydro-4-hydroxy-3-(phenylmethyl)-2H-1-benzopyran-7-yl]-4-(trifluoromethyl)-benzoic acid
US6436987B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2001 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Mar 13, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides novel polymorphic forms of anhydrous crystalline (3S-trans)-2-[3,4-dihydro-4-hydroxy-3-(phenylmethyl)-2H-1-benzopyran-7-yl]-4-(trifluoromethyl)-benzoic acid, hereinafter compound (I), and a novel salt, and a hydrate of said compound, wherein each novel composition has particular characteristics that contribute to its use in pharmaceutical formulations. The novel monohydrate of compound (I) is described, which can be advantageously isolated from water wet solvents and formulated via wet granulation techniques. The novel ethylene diamine (mono) salt is also described, and demonstrates superior solubility and bioavailability. Additionally, polymorphic forms A and B of anhydrous crystalline compound (I) are described, wherein form A has superior thermal stability, and form B has superior solubility. Additionally, there are described pharmaceutical compositions that comprise these substances, and methods for the treatment of disease states therewith, in particular, the treatment of inflammatory diseases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.