Antifungal compounds and processes for making
The present invention relates to polymorphic forms of compound 1 or 1a and processes for preparing compound 1 and 1a polymorphs, which are useful as antifungal agents. In particular, the invention seeks to provide a new methodology for preparing polymorphs of compound 1 and substituted derivatives thereof.
1. A polymorph of a compound of formula 1,
characterized by at least one of:
(i) a powdered X-ray diffraction pattern having two or more peaks expressed in degrees 2-theta±0.2° and selected from peaks delineated in the pattern of FIG. 1 ; or
(ii) a DSC thermogram showing an endotherm at about 101-108° C.
2. The polymorph compound of claim 1 , characterized by a powdered X-ray diffraction pattern having peaks expressed in degrees 2-theta±0.2° at each of about 8.4, 11.2, 17.8, 19.1, and 22.3.
3. The polymorph compound of claim 1 , characterized by a melting point of about 101-108° C.
4. The polymorph compound of claim 1 , having less than 0.5% water therein.
5. The polymorph compound of claim 1 , wherein the compound is essentially solvent free.
6. The polymorph compound of claim 1 , wherein the compound has less than 0.5 wt. % solvent, less than 0.25 wt. % solvent, or less than 0.10 wt. % solvent.