2,4,6-三甲基苯乙酸 、
草酰氯 、 1-[4-(4,5-Dihydro-1h-pyrazol-3-yl)-phenyl]-3-methyl-urea trifluoro-acetic acid salt 在
1-methyl-3-(4-{1-[2-(2,4,6-trimethyl-phenyl)-acetyl]-4,5-dihydro-1H-pyrazol-3-yl}-phenyl)-urea 作用下,
以to give final compound 1-methyl-3-(4-{1-[2-(2,4,6-trimethyl-phenyl)-acetyl]-4,5-dihydro-1H-pyrazol-3-yl}-phenyl)-urea (69)的产率得到1-methyl-3-(4-{1-[2-(2,4,6-trimethyl-phenyl)-acetyl]-4,5-dihydro-1H-pyrazol-3-yl}-phenyl)-urea