Scheme 2.
Synthesis of gluco iminosugars 2–4. Bn, benzyl; Tol, p‐tolyl; Trt, triphenylmethyl; DMAP, 4‐(dimethylamino)pyridine; PMB, p‐methoxybenzyl; TBAI, tetrabutylammonium iodide; DMF, N,N‐dimethylformamide; NIS, N‐iodosuccinimide; DMSO, dimethyl sulfoxide; MS, molecular sieves; DIPEA, N,N‐diisopropylethylamine; TFA, trifluoroacetic acid; Tf, trifluoromethanesulfonyl.