(5S)-4-hydroxy-3,5-dimethyl-5-(3-oxo-oytyn-4-yl)-2(5H)-furanone

(S)-5-((4E,6E)-3-oxo-4,6-octadienyl)-4-methoxymethoxy-3,5-dimethyl-2(5H)-furanone

(3R,4R,5S)-4-hydroxy-3,5-dimethyl-5-((4E,6E)-3-oxoocta-4,6-dien-1-yl)dihydrofuran-2(3H)-one

1-戊炔

(2S)-2-methyl-4,5-dihydro-2(H)-furan-3-one-2-propionic acid methyl ester