Aptosimone

(1S,3aβ,6aβ)-1β,4β-Bis(1,3-benzodioxol-5-yl)tetrahydro-1H,3H-furo[3,4-c]furan-3-one

(1S)-3,3aβ,6,6aβ-Tetrahydro-1β,4β-bis(1,3-benzodioxole-5-yl)-1H,4H-furo[3,4-c]furan-3-one

(3S)-3α,6α-Bis(3,4-methylenedioxyphenyl)-3aα,4,6,6aα-tetrahydro-1H,3H-furo[3,4-c]furan-1-one