N-t-butoxycarbonyl-4-hydroxyproline; 4-Hydroxy-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester; N-(tert-butoxycarbonyl)-trans-4-hydroxy-D-proline; cis-D-4-hydroxy-pyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester; 1-(tert-butyloxycarbonyl)-4(S)-hydroxypyrrolidine-2(S)-carboxylic acid; 1-(t-butoxycarbonyl)-(2S,4R)-4-hydroxy-2-pyrrolidinecarboxylic acid; Expand