Synthesis of NLS-HDACi conjugates. Conditions: (a) 4-ethynylaniline, CuI, DIPEA, THF, (b) NaNO2, NaN3, 17.2% HCl(aq), (c) LiOH•H2O, THF/H2O, (d) o-tritylhydroxylamine, EDCI, HOBT, NMM, DMF, (e) alkyne-terminated NLS peptides, CuI, TBTA, DIPEA, THF/DMF, (f) 90:5:5 TFA/TIPS/Phenol