(S)-2-{4-[(2-Acetylamino-4-chloro-quinolin-6-ylmethyl)-prop-2-ynyl-amino]-benzoylamino}-pentanedioic acid di-tert-butyl ester   、                                                                                      
三氟乙酸                                                                                                                                                                                                                                                                      反应 0.25h,
                                                                                                                以51%的产率得到(S)-2-{4-[(2-Acetylamino-4-chloro-quinolin-6-ylmethyl)-prop-2-ynyl-amino]-benzoylamino}-pentanedioic acid; compound with trifluoro-acetic acid