(R)-[(9H-Fluoren-9-ylmethoxycarbonylamino)]-(3-hydroxy-phenyl)-acetic acid 在
吡啶 作用下,
生成 (8R,11S,14R)-14-Amino-11-isobutyl-18-nitro-10,13-dioxo-2-oxa-9,12-diaza-tricyclo[14.2.2.1
3,7]henicosa-1(19),3,5,7(21),16(20),17-hexaene-8-carboxylic acid ((S)-1-carbamoyl-ethyl)-amide; compound with trifluoro-acetic acid