(E)-2(R)-[1(S)-[(tetrahydro-2(RS)-pyranyloxy)carbamoyl]-4-phenyl-3-butenyl]-2'-isobutyl-2'-(O-tert.butyl-D-seryl)-4-methylvalerohydrazide 、
对甲苯磺酸 在
乙醚 作用下,
以
甲醇 为溶剂,
反应 3.5h,
以to give 0.38 g of (E)-2(R)-[1(S)-(hydroxycarbamoyl)-4-phenyl-3-butenyl]-2′-isobutyl-2′-(O-tert.butyl-D-seryl)-4-methylvalerohydrazide p-toluenesulphonate in the form of a white solid的产率得到(E)-2(R)-[1(S)-(hydroxycarbamoyl)-4-phenyl-3-butenyl]-2'-isobutyl-2'-(O-tert.butyl-D-seryl)-4-methylvalerohydrazide p-toluenesulphonate