(3R,4S,5R)-3-azido-4,5-bis-methanesulfonyloxy-cyclohex-1-enecarboxylic acid ethyl ester

(1S,5S,6R)-ethyl 7-acetyl-5-(tert-butoxycarbonylamino)-7-azabicyclo[4.1.0]hept-2-ene-3-carboxylate

3-戊醇

(3R,4S,5R)-ethyl 4-hydroxy-5-(methoxymethoxy)-3-(pentan-3-yloxy)cyclohex-1-enecarboxylate

ethyl (3R,4R,5R)-4-azido-5-(methoxymethoxy)-3-(pentan-3-yloxy)cyclohex-1-ene-1-carboxylate