Crystalline form of 4-[[4-[[4-(2-Cyanoethenyl)-2,6-dimethylphenyl]-amino]-2-pyrimidinyl]amino]benzonitrile
View Patent ↗This invention concerns polymorph I of TMC278, its use and preparation. It further concerns pharmaceutical formulations comprising this polymorph.
1. Polymorph I of (E) 4-[[4-[[4-(2-cyanoethenyl)-2,6-dimethylphenyl]amino]-2-pyrimidinyl]amino]benzonitrile.
2. The polymorph of claim 1 characterized by X-ray powder diffraction peaks at two-theta positions 9.0°±0.2°, 14.3°±0.2°, 17.1°±0.2° and 24.2°±0.2°.
3. The polymorph of claim 2 further characterized by X-ray powder diffraction peaks at two-theta positions 11.3°±0.2°, 19.1°±0.2°, and 27.6°±0.2°.
4. A process for preparing the polymorph of claim 1 , wherein the said polymorph is prepared by dissolving TMC278 in a ketone and heating the solution to reflux temperature, and allowing this solution to cool.
5. A solid pharmaceutical composition comprising as active ingredient polymorph I of TMC278 and a pharmaceutically acceptable carrier.
6. A process for preparing the polymorph of claim 2 , wherein the said polymorph is prepared by dissolving TMC278 in a ketone and heating the solution to reflux temperature, and allowing this solution to cool.
7. A process for preparing the polymorph of claim 3 , wherein the said polymorph is prepared by dissolving TMC278 in a ketone and heating the solution to reflux temperature, and allowing this solution to cool.
8. A micro- or nanoparticle pharmaceutical composition for administration by intramuscular or subcutaneous injection, comprising a therapeutically effective amount of polymorph I of TMC278, comprising polymorph I of TMC278, in micro- or nanoparticle form, having a surface modifier adsorbed to the surface thereof, suspended in a pharmaceutically acceptable aqueous carrier.
9. A pharmaceutical composition comprising a micro- or nanoparticle composition as defined in claim 8 .
10. A method of treating in a subject HIV infection comprising administering to the subject a therapeutically effective amount of a pharmaceutical composition of claim 9 .
11. The method of claim 10 , wherein the composition is administered or is to be administered intermittently at a time interval that is in the range of one week to one year, or one week to two years.
12. The method of claim 10 , wherein the composition is administered or is to be administered at a time interval that is in the range of one week to one month, or in the range of one month to three months, or in the range of three months to six months.