PROCESS OF PREPARING (1R, 4R, 5S)-4-(2-CHLOROETHYL)-1-((S)-((S)-CYCLOHEX-2-EN-1-YL)(HYDROXY)METHYL)-5-METHYL-6-OXA-2-AZABICYCLO3.2.0HEPTANE-3,7-DIONE(SALINOSPORAMIDE A; MARIZOMIB)

摘要

The present invention is directed to a process for the synthesis of (1R, 4R, 5S)-4-(2- chloroethyl)-1-((S)-((S)-cyclohex-2-en-1-yl)(hydroxy)methyl)-5-methyl-6-oxa-2- azabicyclo[3.2.0]heptane-3,7-dione; compound 1 (salinosporamide A, marizomib): (Compound 1).