Methanesulfonic acid (E)-(S)-8-benzyloxy-1-((2S,5S,2'S)-5'-oxo-octahydro-[2,2']bifuranyl-5-yl)-oct-4-enyl ester

(2S,2'S,5'S,2''S,5''R)-5''-((R)-4-Benzyloxy-1-hydroxy-butyl)-hexahydro-[2,2';5',2'']terfuran-5-one

(2S,2'S,5'S,2''S,5''S)-5''-((R)-4-Benzyloxy-1-hydroxy-butyl)-hexahydro-[2,2';5',2'']terfuran-5-one

(2S,2'S,5'S,2''S,5''R)-5''-((S)-4-Benzyloxy-1-hydroxy-butyl)-hexahydro-[2,2';5',2'']terfuran-5-one

(2S,2'S,5'S,2''R,5''S)-5''-((R)-4-Benzyloxy-1-hydroxy-butyl)-hexahydro-[2,2';5',2'']terfuran-5-one