(3R,6S)-2,5-Dimethoxy-3-isopropenyl-6-isopropyl-3-methyl-3-(1-phenylvinyl)-3,6-dihydropyrazine

2-((2R,5S)-5-Isopropyl-3,6-dimethoxy-2-methyl-2,5-dihydro-pyrazin-2-yl)-propan-2-ol

1-((2R,5S)-5-Isopropyl-3,6-dimethoxy-2-methyl-2,5-dihydro-pyrazin-2-yl)-ethanol

(3R,6S)-3-[(benzyloxy)methyl]-6-isopropyl-1,4-dimethoxy-3-methyl-3,6-dihydropyrazine