Triethylamine → tert-Butyl N-{[1-(4-bromobenzyl)-4-hydroxy-7-methyl-2-oxo-6-(1,3-thiazol-4-ylcarbonyl)-2,5,6,7-tetrahydro-1H-pyrrolo[3,4-b]pyridin-3-yl]carbonyl}glycinate

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반응 단계

To tert-butyl N-{[1-(4-bromobenzyl)-4-hydroxy-7-methyl-2-oxo-2,5,6,7-tetrahydro-1H-pyrrolo[3,4-b]pyridin-3-yl]carbonyl}glycinate (1.344 g, 2.73 mmol, prepared in similar fashion to Intermediate 6 utilizing the appropriate starting materials) was added the product of Step A (0.403 g, 2.73 mmol) and NEt3 (0.38 mL, 2.73 mL). The reaction stirred at rt for about 17 h and was then diluted with EtOAc and washed with aq Na2CO3 (2 M) and brine. The concentrated residue was purified by flash chromatography on silica gel gradient eluted with 0-65% EtOAc/hexane to afford the product.

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