ethyl 5-[2-[(6S)-2-(2,2-dimethylpropanoylamino)-4-oxo-8-[(1R)-1-phenylethyl]-3,5,6,7-tetrahydropyrido[2,3-d]pyrimidin-6-yl]ethyl]-4-methylthiophene-2-carboxylate 在
苯酚 作用下,
以
1,1-二氯乙烷 、
三氟乙酸 为溶剂,
反应 21.0h,
以90%的产率得到ethyl 5-[2-[(6S)-2-(2,2-dimethylpropanoylamino)-4-oxo-5,6,7,8-tetrahydro-3H-pyrido[2,3-d]pyrimidin-6-yl]ethyl]-4-methylthiophene-2-carboxylate