7-iodo-5-triisopropylsilanyl-2-(3,4,5-trimethoxy-phenyl)-5H-pyrrolo[2,3-b]pyrazine 、
N-methoxy-N,4-dimethyltetrahydro-2H-pyran-4-carboxamide 以66, to afford a pale yellow solid的产率得到(4-Methyl-tetrahydro-pyran-4-yl)-[2-(3,4,5-trimethoxy-phenyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-methanone