(2S,4S)-1-p-methoxybenzyloxycarbonyl-4-tritylthiopyrrolidine-2-methanol

(2S,4S)-2-aminomethyl-1-p-methoxybenzyloxycarbonyl-4-tritylthiopyrrolidine

(2S,4S)-1-p-methoxybenzyloxycarbonyl-4-tritylthiopyrrolidine-2-carboxylic acid methyl ester

4-methoxybenzyl (2S,4S)-2-(((methylsulfonyl)oxy)methyl)-4-(tritylthio)pyrrolidine-1-carboxylate

(2S,4S)-1-p-methoxybenzyloxycarbonyl-2-phthalimidomethyl-4-tritylthiopyrrolidine