1 HYE (2r,3s,4r)-2-[(S)-(1s)-cyclohex-2-en-1-yl(hydroxy)methyl]-3-hydroxy-4-(2-hydroxyethyl)-3-methyl-5-oxopyrrolidine-2-carbaldehyde 1.000 2 SA6 (2r,3s,4r)-2-[(S)-(1s)-cyclohex-2-en-1-yl(hydroxy)methyl]-4-ethyl-3-hydroxy-3-methyl-5-oxopyrrolidine-2-carbaldehyde 0.952 3 GPT (2r,3s,4r)-2-[(S)-(1s)-cyclohex-2-en-1-yl(hydroxy)methyl]-4-(2-fluoroethyl)-3-hydroxy-3-methyl-5-oxopyrrolidine-2-carbaldehyde 0.909 4 F6K Homosalinosporamide a - bound form 0.870 5 SA1 (3ar,6r,6as)-6-((S)-((S)-cyclohex-2-enyl)(hydroxy)methyl)-6a-methyl-4-oxo-hexahydro-2h-furo[3,2-C]pyrrole-6-carbaldehyde 0.708