Diisopropylethylamine → HCID 86613955, compound

Participants

Reaction Steps

To 5-(8-methoxy-1-piperidin-4-ylmethyl-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl)thiazolidine-2,4-dione (20 μmol, 1.0 eq.) was added a DMF (200 μl) solution of tetrahydropyran-4-one (24 μmol, 1.2 eq.) and acetic acid (10 μl). MP-sodium triacetoxy borohydride was added further. After this solution was shaken for several minutes, DIEA (30 μl) was added and a reaction was carried out at 60° C. overnight. The resin was removed by filtration and washed with methylene chloride. The solvent was distilled off with nitrogen gas, and the residue was purified by HPLC (UV-trigger, column:CAPCELL PAK C18, UG 120 S-5, 20 mm×50 mm, 0.05% trifluoroacetic acid-H2O, 0.05% trifluoroacetic acid-CH3CN). The structure was confirmed by LC-MS, and freeze-drying was conducted, giving 5-{8-methoxy-1-[1-(tetrahydropyran-4-yl)piperidin-4-yl]methyl-2-oxo-1,2,3,4-tetrahydroquinolin-5-ylmethyl}thiazolidine-2,4-dione in 30% yield.

Provenance & Evidence