tert-butyl [(1S,5R,6R)-6-acetylamino-3-cyano-5-hydroxycyclohex-3-en-1-yl]carbamate

tert-butyl ((1S,6R)-6-acetamido-3-cyano-5-oxocyclohex-3-en-1-yl)carbamate

tert-butyl [(1S,5R,6R)-6-acetylamino-3-cyano-5-(1-ethylpropoxy)cyclohex-3-en-1-yl]carbamate

乙醇