N-benzoyl-α,β-dehydroalanine
penicillamine methyl ester
N-chloro-succinimide
(+/-)-6c-benzoylamino-2,2-dimethyl-5-oxo-hexahydro-[1,4]thiazepine-3r-carboxylic acid methyl ester
6-benzoylamino-6-chloromethyl-2,2-dimethyl-5-oxo-thiomorpholine-3-carboxylic acid methyl ester