BIS THF HNS Derivative 3

2,5-Dioxopyrrolidin-1-yl ((3R,3aR,6aS)-hexahydrofuro[2,3-b]furan-3-yl) Carbonate is a useful intermediate in the practical synthesis of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol, a key intermediate in the synthesis of darunavir.