trans-3,6-bis(4-ketopentyl)-1,2,4,5-tetroxane

5-氧代己酸

(7S)-1-methyl-2,3,5,6,11-pentaoxaspiro[bicyclo[5.3.1]undecane-4,1'-cyclohexane]

(4R,7S)-1-methyl-4-(p-tolyl)-2,3,5,6,11-pentaoxabicyclo[5.3.1]undecane

1-methyl-4-exo-pentyl-2,3,5,6,11-pentaoxabicyclo[5.3.1]undecane