(2R,4R)-4-((Z)-6-Methoxycarbonyl-hex-1-enyl)-2-phenyl-thiazolidine-3-carboxylic acid tert-butyl ester

cis-8(R)-<(tert-Butoxycarbonyl)amino>-9-mercaptonon-6-enoic acid

(Z)-(R)-8-tert-Butoxycarbonylamino-9-mercapto-non-6-enoic acid methyl ester

(Z)-(R)-9-Benzylsulfanyl-8-tert-butoxycarbonylamino-non-6-enoic acid methyl ester

(2R,4R)-4-formyl-2-phenylthiazolidine-3-carboxylic acid tert-butyl ester