ethyl (3R,4R,5R)-4-acetamido-3-(1-ethyl-propoxy)-5-hydroxy-cyclohex-1-ene-1-carboxylate

ethyl (3R,4R,5R)-4,5-acetylimino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate

乙酰氯

N-脱乙酰基5-叠氮基奥塞米韦

ethyl (3R,4S,5R)-4-acetamido-3-(3-pentyloxy)-5-tosyloxycyclohex-1-ene-carboxylate