The present invention relates to synthetic processes useful in the preparation of compounds of Formula (I) that are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease and have application in the treatment of conditions caused by HCV. In particular, the present invention relates to novel oxidation processes useful for preparing compounds of Formula (I) and related compounds, including pharmaceutically acceptable salts, hydrates and solvates thereof, and including stereoisomers thereof.構造式Iの化合物の固体非晶質形を含み、最大約94m2/gのBET比表面積を有する原薬、このような原薬を含む医薬組成物、このような原薬を調製する工程ならびにこのような原薬および医薬組成物の使用を開示する。【選択図】図1