5-氰基-2-吡啶羧酸 、 US9181236, Table A, 17 以to give the title compound (32 mg, 70.3 μmol, 45.7% yield) as a white foam的产率得到5-cyano-pyridine-2-carboxylic acid [3-((R)-10-amino-8-methyl-6,6-dioxo-6λ6-thia-9-aza-spiro[4.5]dec-9-en-8-yl)-4-fluoro-phenyl]-amide