Design, synthesis, biological evaluation, NMR and DFT studies of structurally simplified trimethoxy benzamides as selective P-glycoprotein inhibitors: the role of molecular flatness
element for tuning P‐gp inhibitory activity. In this study, we designed new structurallysimplified trimethoxy benzamides (5–17, Table 1) with the aim to uncover the minimal molecular requirements needed for P‐gp inhibition. The new prepared smaller‐sized compounds exhibited IC50 in the low micromolar range. The combined use of NMR and DFT studies suggested that molecular flatness is causatively related