Introduction of trifluoromethyl-containing threonine to the target hexapeptide, Tyr–d-Ser–Gly–Phe–Leu–Thr (DSLET), led to the apparent conformational alteration due to the electron-withdrawing effect of the CF3 group when compared with the original DSLET on the basis of their NOESY spectra.
向目标六肽Tyr–d-Ser–Gly–Phe–Leu–Thr(DSLET)引入含有三
氟甲基的苏
氨酸后,与原始DSLET相比,在其NOESY谱的基础上观察到由于
CF3基团的吸电子效应而导致的明显构象变化。