pyrazin-2-ylmethyl-oxalamic acid ethyl ester
(pyrazin-2-ylmethyl)-carbamic acid [(5α,8β)-1-oxo-2-(4-trifluoromethoxy-phenyl)-2-aza-spiro[4.5]dec-8-yl] ester
2-[1-(3,4-Dimethoxy-benzyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-benzo[c]azepin-2-yl]-2-phenyl-N-pyrazin-2-ylmethyl-acetamide