(3S,3aR,6S,6aR)-Hexahydrofuro[3,2-b]furan-3,6-diol
(3R,3aS,6R,6aS)-Hexahydrofuro[3,2-b]furan-3,6-diamine
2,5-Dioxopyrrolidin-1-yl ((3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl) carbonate
(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-ol
