(R)-2-[(4S,5S)-5-((R)-1-Carboxy-3-phenyl-propyl)-2,2-dimethyl-[1,3]dioxolan-4-yl]-4-phenyl-butyric acid                                                                                                                                                                                                                                                                                                          生成                                                 
succinimidyl (2R)-2-[(4R,5R)-5-(3-phenylpropyl-(1R)-1-succinimidyloxycarbonyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-4-phenylbutanoate   、                                                                                             succinimidyl (2R)-2-[(4S,5S)-5-(3-phenylpropyl-(1R)-1-succinimidyloxycarbonyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-4-phenylbutanoate