tert-butyl(3S)-4-({4-[(7-hydroxy-2-heptynyl)oxy]phenyl}sulfonyl)-2,2-dimethyl-3-thiomorpholinecarboxylate 、
乙酸酐 、
吡啶 在
silica gel 、 ethyl acetate hexanes 作用下,
反应 6.0h,
以to provide 0.476 g (97%) of tert-butyl (3S)-4-[(4-{[7-(acetyloxy)-2-heptynyl]oxy}phenyl)sulfonyl]-2,2-dimethyl-3-thiomorpholinecarboxylate as a colorless oil的产率得到tert-butyl (3S)-4-[(4-{[7-(acetyloxy)-2-heptynyl]-oxy}phenyl)sulfonyl]-2,2-dimethyl-3-thiomorpholinecarboxylate