(S,S)-6-(4-amino-butyl)-1-biphenyl-4-ylmethyl-3-naphthalen-2-ylmethyl-piperazine-2,5-dione 、
1H-吡唑-1-甲脒盐酸盐 以
N,N-二甲基甲酰胺 为溶剂,
以82%的产率得到N-[4-((2S,5S)-1-biphenyl-4-ylmethyl-5-naphthalen-2-ylmethyl-3,6-dioxo-piperazin-2-yl)-butyl]-guanidine hydrochloride