(3S,1'R)-5-(1'-carboxy-3'-methylbutoxy)imino-3-hydroxy-1-cyclopentene-1-acetic acid methyl ester

(1SR, 5RS, 6RS, 7RS)-7-acetoxy-6-acetoxymethyl-2-oxabicyclo<3.3.0>octan-3-one

(1S,2S,6R,8S)-10,10-dimethyl-5,9,11-trioxatricyclo[6.4.0.02,6]dodecan-4-one

(3aR,4S,5R,6aS)-4-(((tert-butyldimethylsilyl)oxy)methyl)-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate

(3aR,4S,5R,6aS)-4-[[[(1,1-二甲基乙基)二甲基硅基]氧基]甲基]六氢-5-[(四氢-2H-吡喃-2-基)氧基]-2H-环戊并[b]呋喃-2-酮