4-[3-(4,5-dihydro-1H-imidazol-2-yl)propyl]piperidine 、
6-aminopenicillanic acid 以18.5%的产率得到[2S-(2alpha,5alpha,6beta)]-6-[[[4-[3-(4,5-Dihydro-1H-imidazol-2-yl)propyl]-1-piperidinyl]methylene]-amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid hydrochloride