(6S,3aR,6aS,SR)-6-(4-methoxyphenyl)-3-methyl-5-(toluene-4-sulfinyl)-hexahydro-furo[3,4-c]pyrrol-1-one

(2S,3S,4R,SR)-[4-acetyl-2-(4-methoxyphenyl)-1-(toluene-4-sulfinyl)-pyrrolidin-3-yl]acetaldehyde

(2S,3S,4R)-4-acetyl-3-(carboxymethyl)-1-tosylpyrrolidine-2-carboxylic acid

(2S,3R,4S)-4-acetyl-3-methoxycarbonylmethyl-1-(toluene-4-sulfonyl)-pyrrolidine-2-carboxylic acid methyl ester

(2S,3S,4R,SR)-4-formyl-2-(4-methoxyphenyl)-1-(toluene-4-sulfinyl)-pyrrolidine-3-carboxylic acid diphenylamide