Acetic Acid → 6-fluoro-9-{[3-(5-fluoro-1H-indol-3-yl)propyl]amino}-3,4,9,10-tetrahydro-2H-pyrano[2,3-h]isoquinolin-1(8H)-one

Participants

Reaction Steps

To a solution of 9-amino-6-fluoro-3,4,9,10-tetrahydro-2H-pyrano[2,3-h]isoquinolin-1(8H)-one (49) (110 mg, 0.47 mmol) in anhydrous methanol (7 ml) was added 3-(5-fluoro-1H-indol-3-yl) propanal (2) (89 mg, 0.47 mmol), acetic acid (0.060 ml), and NaBH3CN (59 mg, 0.930 mmol). Resulting reaction mixture was stirred at room temperature for 3 hr. The solvent was removed in vacuo and the residue was re-dissolved in CH2Cl2 (120 ml). The solution was washed with 1 N NaOH and H2O, saturated. NaCl. The organic solution was separated, dried over Na2SO4, then concentrated in vacuo. The crude compound was purified on silica gel eluting with 80% EtOAc/Hexane to yield the title compound. MS (ES) m/z 410.2.

Provenance & Evidence