(3R,4R,5S)-4-acetylamino-3-tert-butyldimethylsilyloxy-5-ethoxycarbonyloxy-1-cyclopentene

(3S,4R,5S)-4-acetylamino-3-tert-butyldimethylsilyloxy-5-ethoxycarbonyloxy-1-cyclopentene

1D-(1,2,3/4,5)-1,2-O-isopropylidene-5-(methylsulfanyl)-4-O-(methylsulfonyl)-3-O-(2,2,2-trichloro-1-iminoethyl)cyclopentane-1,2,3,4-tetrol

(1R,4S,5S)-5-acetylamino-4-methylthio-2-cyclopenten-1-ol

(1S,4S,5S)-5-acetylamino-4-methylthio-2-cyclopenten-1-ol