tert-butyl N-(5-(tributylstannyl)-1,3-thiazol-2-yl)carbamate → tert-Butyl (5-(6-(((1R,2S)-2-((tert-butoxycarbonyl)amino)cyclohexyl)amino)-2-(2,4-dimethoxybenzyl)-7-fluoro-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-4-yl)-1,3-thiazol-2-yl)carbamate

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A solution of tert-butyl (1S,2R)-2-(4-chloro-2-(2,4-dimethoxybenzyl)-7-fluoro-3-oxo-2,3-dihydro-1H-pyrrolo[3,4-c]pyridin-6-ylamino)cyclohexylcarbamate (50 mg, 0.091 mmol), tert-butyl 5-(tributylstannyl)thiazol-2-ylcarbamate (53.5 mg, 0.109 mmol), and tetrakis(triphenylphosphine)palladium(0) (105 mg, 0.091 mmol) in toluene (1 mL) was heated to 102° C. for 24 h. After removal of the solvent, the resulting crude material was reconstituted in MeOH/DMF (6.0 mL) and purified via preparative HPLC eluting with water (0.05% TFA) and ACN (70-75% gradient, 0.035% TFA). The collected fractions were stripped to dryness via rotary evaporation to yield the title compound (42 mg, 64%). [M+H] calc'd for C35H45FN6O7S, 713. found, 713.

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