The invention relates generally to methods of preparing 1-arylsulfonyl-pyrrolidine-2-carboxamide Transient Receptor Potential channel antagonist compounds of the following structure (I):. The invention further relates to solvate and co-crystal polymorphs of crystalline formula (I), and methods of preparation thereof.本發明大體上關於製備以下結構(I)之1-芳基磺醯基-吡咯啶-2-甲醯胺瞬時受體電位通道拮抗劑化合物之方法:。 本發明進一步關於結晶式(I)之溶劑合物及共晶體多晶型物,及其製備方法。