Crystalline forms of niraparib tosylate
The present invention provides novel crystalline forms of niraparib tosylate. Specific crystalline forms provided by the present invention include niraparib tosylate Form APO-I, a co-crystal of niraparib tosylate and urea, and niraparib tosylate Form APO-II, a co-crystal of niraparib tosylate and oxalic acid. Also provided are pharmaceutical compositions including the niraparib tosylate crystalline forms, and the use of these forms in treatment or prevention of conditions which can be ameliorated by the inhibition of poly(ADP-ribose) polymerase (PARP), in particular certain forms of cancer.
1. A crystalline form of niraparib tosylate comprising niraparib tosylate and urea.
2. The crystalline form of claim 1 , wherein the molar ratio of niraparib tosylate to urea is between approximately 1:0.75 and approximately 1:1.25.
3. The crystalline form of claim 1 , wherein the molar ratio of niraparib tosylate to urea is approximately 1:1.
4. The crystalline form of claim 1 , characterized by a PXRD diffractogram comprising peaks, expressed in degrees 2θ (±0.2°), at 5.2°, 6.6° and 8.4°.
5. The crystalline form of claim 4 , further comprising at least three peaks in the PXRD diffractogram, expressed in degrees 2θ (±0.2°), selected from the group consisting of: 12.2°, 14.3°, 14.8°, 15.5°, 18.5° and 21.8°.
6. The crystalline form of claim 4 , further comprising peaks in the PXRD diffractogram, expressed in degrees 2θ (±0.2°), at 12.2°, 14.3°, 14.8°, 15.5°, 18.5° and 21.8°.
7. The crystalline form of claim 4 , providing a PXRD diffractogram comprising peaks in substantially the same positions (±0.2° 2θ) as those shown in FIG. 1 .
8. A crystalline form of niraparib tosylate comprising niraparib tosylate and oxalic acid.
9. The crystalline form of claim 8 , wherein the molar ratio of niraparib tosylate to oxalic acid is between approximately 1:0.75 and approximately 1:1.25.
10. The crystalline form of claim 8 , wherein the molar ratio of niraparib tosylate to oxalic acid is approximately 1:1.
11. The crystalline form of niraparib tosylate of claim 8 , characterized by a PXRD diffractogram comprising peaks, expressed in degrees 2θ (±0.2°), at 5.8°, 7.6° and 10.6°.
12. The crystalline form of claim 11 , further comprising at least three peaks in the PXRD diffractogram, expressed in degrees 2θ (±0.2°), selected from the group consisting of: 12.8°, 14.2°, 15.2°, 16.7°, 17.3° and 20.9°.
13. The crystalline form of claim 11 , further comprising peaks in the PXRD diffractogram, expressed in degrees 2θ (±0.2°), at 12.8°, 14.2°, 15.2°, 16.7°, 17.3° and 20.9°.
14. The crystalline form of claim 11 , providing a PXRD diffractogram comprising peaks in substantially the same positions (±0.2° 2θ) as those shown in FIG. 2 .
15. A pharmaceutical composition comprising the crystalline form of niraparib tosylate according to claim 4 , and one or more pharmaceutically acceptable excipients.
16. The pharmaceutical composition of claim 15 , wherein the pharmaceutical composition is a capsule.
17. A method for treating cancer selected from the group consisting of epithelial ovarian, fallopian tube, primary peritoneal and combinations thereof comprising administering an effective amount of the crystalline form of niraparib tosylate according to claim 4 .
18. A process for the preparation of the crystalline form of niraparib tosylate according to claim 4 , the process comprising mixing together a solid phase of niraparib tosylate and a solid phase of urea for a suitable time to afford the crystalline form of niraparib tosylate.
19. The process of claim 18 , wherein the mixing is conducted in the presence of a limited amount of a suitable solvent so as to maintain a solid phase throughout mixing.
20. The process of claim 19 , wherein the suitable solvent is acetonitrile.