(2S)-2-aminohex-5-enoic acid methyl ester

(2'R,5'R)-4-(5-isopropyl-3,6-dimethoxy-2-methyl-2,5-dihydropyrazin-2-yl)butan-2-one

(2'R,5'R)-1-diazo-4-(5-isopropyl-3,6-dimethoxy-2-methyl-2,5-dihydropyrazin-2-yl)butan-2-one

(2'R,5'R)-4-(5-isopropyl-3,6-dimethoxy-2-propyl-2,5-dihydropyrazin-2-yl)butan-2-one

(2R,5S,2'R)-5-(3-butenyl)-5-(2-hydroxy-3-butenyl)-2,5-dihydro-3,6-dimethoxy-2-isopropylpyrazine