5-(4-methoxyphenyl)-6-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid methyl ester 、 (3R)-3-methyl-1-[(1S)-1-(2,3,5-trifluorophenyl)ethyl]piperazine 在
四氯化钛 silica gel 作用下,
以
heptanes 、
乙酸乙酯 为溶剂,
以to afford the title compound after column chromatography (silica gel, 20-30% EtOAc in heptanes) as a vitreous yellow solid with spectral data consistent with的产率得到[5-(4-Methoxyphenyl)-6-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-3-yl][(2R)-2-methyl-4-[(1S)-1-(2,3,5-trifluorophenyl)ethyl]-1-piperazinyl]methanone