(2S,5R)-2-tert-butyl-5-<2-(dibenzylamino)ethyl>-2,5-dihydro-3,6-dimethoxypyrazine
(2S,5S)-2-tert-butyl-5-<2-(dibenzylamino)ethyl>-2,5-dihydro-3,6-dimethoxypyrazine
(2R,5R)-2-tert-Butyl-5-<2-(dibenzylamino)ethyl>-2,5-dihydro-3,6-dimethoxypyrazine
(2R,5S)-2-tert-butyl-5-<2-(dibenzylamino)ethyl>-2,5-dihydro-3,6-dimethoxypyrazine
(2S,5R)-2-tert-butyl-5-<3-(dibenzylamino)propyl>-2,5-dihydro-3,6-dimethoxypyrazine