三氟甲磺酸三甲基硅酯 、
tert-butyl N-[N-[(2S)-1-(butylamino)-3-methyl-1-oxobutan-2-yl]-N'-(cyclohexylmethyl)carbamimidoyl]carbamate 以
二氯甲烷 为溶剂,
以94%的产率得到(S)-N-Butyl-2-(N'-cyclohexylmethyl-guanidino)-3-methyl-butyramide; compound with trifluoro-methanesulfonic acid