3aβ,4,4aα,5,6,7,8,8a,9,9aβ-decahydro-3β,8aβ-dimethyl-5-methylene-3β-(phenylthio)naphtho<2,3-b>furan-2(3H)-one
3aβ,4,4aα,5,6,7,8,8a,9,9aβ-decahydro-3α,8aβ-dimethyl-5-methylene-3β-(phenylthio)naphtho<2,3-b>furan-2(3H)-one
dl-7,8-epiisoalantolactone
2,3,3aβ,5,6,7,8,8a,9,9aβ-decahydro-8aβ-methyl-2-oxo-5β-(phenylthio)naphtho<2,3-b>furan-3-carboxylic acid methyl ester
2,3,3aβ,4,6,7,8,8a,9,9aβ-decahydro-8aβ-methyl-2-oxo-4β-(phenylthio)naphtho<2,3-b>furan-3-carboxylic acid methyl ester