[CH:1]1([CH2:6][C:7]([OH:9])=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.C[O:12][C:13](=[O:17])[C@H:14]([CH3:16])[NH2:15]>>[CH:1]1([CH2:6][C:7]([NH:15][C@H:14]([C:13]([OH:17])=[O:12])[CH3:16])=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5]1Following General Procedure II-E above using cyclopentylacetic acid (Aldrich) and L-alanine methyl ester hydrochloride (Sigma), the title compound was prepared as a solid having a melting point of 43-46° C. Purification was by recrystallization from ethyl acetate/hexanes.
Wird geladen…