1-羟基苯并三唑 、
5-氯-6-(1-甲氧基)-3-吡啶羧酸 、
ethyl 4-{4-[(Z)-(hydroxyimino)(amino)methyl]-1-[(4-methylphenyl)sulfonyl]-1H-indol-7-yl}butanoate 、
四丁基氟化铵 在
EtOAc Petroleum 、
ethyl 4-[4-(5-{5-chloro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-7-yl]butanoate 作用下,
以
四氢呋喃 、
1,2-二氯乙烷 为溶剂,
反应 17.5h,
以to obtain the desired product 150 mg ethyl 4-[4-(5-{5-chloro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-7-yl]butanoate (D42)的产率得到ethyl 4-[4-(5-{5-chloro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indol-7-yl]butanoate