4,5,6,7-tetrahydroisoxazolo[4,5-c]pyridine hydrochloride 、 (S)-7-(8-chloronaphthalen-1-yl)-2-((1-methylpyrrolidin-2-yl)methoxy)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl trifluoromethanesulfonate 在
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以76 %的产率得到5-[7-(8-chloronaphthalen-1-yl)-2-[[(2S)-1-methylpyrrolidin-2-yl]methoxy]-6,8-dihydro-5H-pyrido[3,4-d]pyrimidin-4-yl]-6,7-dihydro-4H-[1,2]oxazolo[4,5-c]pyridine