To a solution of Intermediate 87 (0.981 g, 3.0 mmol) and (R)-8-(benzyloxy)-5-(2-bromo-1-(tert-butyldimethylsilyloxy)ethyl)quinolin-2(1H)-one (1.463 g, 2.99 mmol) in N-methylpyrrolidinone (5 mL) was added sodium iodide (0.471 g, 3.14 mmol) and sodium hydrogencarbonate (0.352 g, 4.19 mmol). The reaction mixture was heated at 120° C. for 4 hours and poured into excess water. The organic layer was extracted with diethyl ether and washed with water. The solvent was removed under reduced pressure and the crude was purified by column chromatography with silica gel, eluting with dichloromethane/methanol (from 90:1 to 90:2) to give 0.748 g (34% yield) of the title compound.
