4-(2-Ethyl-benzyloxy)-N-[(1R,2S)-2-(2-hydroxy-ethylamino)-1-(4-methyl-2,6,7-trioxa-bicyclo[2.2.2]oct-1-yl)-propyl]-benzenesulfonamide 在
三苯基膦 、
偶氮二甲酸二乙酯 作用下,
生成
(2R,3S)-1-[4-(2-Ethyl-benzyloxy)-benzenesulfonyl]-3-methyl-2-(4-methyl-2,6,7-trioxa-bicyclo[2.2.2]oct-1-yl)-piperazine