benzyl 4-(3-[(2S)-2-piperidyl]-1,2,4-oxadiazol-5-ylmethoxy)-1-piperidinecarboxylate 、
1H-苯并[d]咪唑-2-磺酰氯 在
benzyl 4-(3-[(2S)-1-(1H-benzo[d]imidazol-2-ylsulfonyl)-2-piperidyl]-1,2,4-oxadiazol-5-ylmethoxy)-1-piperidinecarboxylate 、 crude product 、 silica gel 、
正己烷 、
乙酸乙酯 作用下,
以ethyl acetate, in 5% increments, to afford benzyl 4-(3-[(2S)-1-(1H-benzo[d]imidazol-2-ylsulfonyl)-2-piperidyl]-1,2,4-oxadiazol-5-ylmethoxy)-1-piperidinecarboxylate as a clear oil的产率得到benzyl 4-(3-[(2S)-1-(1H-benzo[d]imidazol-2-ylsulfonyl)-2-piperidyl]-1,2,4-oxadiazol-5-ylmethoxy)-1-piperidinecarboxylate