(4S,6S)-N-(bis(4-methoxyphenyl)(phenyl)methyl)-4-(2-fluoro-5-iodophenyl)-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-2-amine 、
5-[(trimethylsilyl)ethynyl]pyridine-2-carbonitrile 以to give 5-((3-((4S,6S)-2-(bis(4-methoxyphenyl)(phenyl)methylamino)-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluorophenyl)ethynyl)picolinonitrile (XVI-7) (26 mg) as a colorless foam的产率得到5-((3-((4S,6S)-2-((bis(4-methoxyphenyl)(phenyl)methyl)amino)-4-methyl-6-(trifluoromethyl)-5,6-dihydro-4H-1,3-oxazin-4-yl)-4-fluorophenyl)ethynyl)picolinonitrile