The present invention provides new methods for preparing compound (5), and pharmaceutically acceptable salts thereof, of structure. Compound (5), or a pharmaceutically acceptable salt thereof, is an important intermediate in the synthesis of carfilzomib. The invention further provides methods of making a useful manganese catalyst that may be used in the epoxidation step of the present invention.
本发明提供了制备化合物(5)及其药学上可接受的盐的新方法,该化合物具有特定结构。化合物(5)或其药学上可接受的盐是合成
卡非佐米的重要中间体。本发明还提供了制备一种有用的
锰催化剂的方法,该催化剂可用于本发明中的环氧化步骤。