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.