{1-[4-(6-fluoro-4-oxo-2-phenyl-4H-chromen-3-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester 、
3-chloro-7-iodo-1-methyl-8-phenyl-1H-9-oxa-1,2-diaza-cyclopenta[a]naphthalen-6-one 以to give the title compound as a pale yellow gum (34 mg)的产率得到{1-[4-(3-chloro-1-methyl-6-oxo-8-phenyl-1,6-dihydro-9-oxa-1,2-diaza-cyclopenta[a]naphthalen-7-yl)-phenyl]-cyclobutyl}-carbamic acid tert-butyl ester