p. 2414 - 2428
(2007/10/02)formaldehyd
(3aS,5S,8aR,9aS)-5,8a-Dimethyl-2-oxo-2,3,3a,5,6,7,8,8a,9,9a-decahydro-naphtho[2,3-b]furan-3-carboxylic acid
2,3,3aβ,5,6,7,8,8a,9,9aβ-decahydro-5β,8aβ-dimethyl-2-oxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester
5β-bromo-2,5,6,7,8,8a,9,9aβ-octahydro-8aβ-methyl-2-oxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester
2,5-dihydro-4-methyl-5-<(1-methyl-2-oxocyclohexyl)methyl>-2-oxo-3-furancarboxylic acid methyl ester