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

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

(R)-4-(tert-Butyl-dimethyl-silanyloxy)-4-{(2S,5R,2'S,5'S)-5'-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-undecyl]-octahydro-[2,2']bifuranyl-5-yl}-butyraldehyde

(2R,2'S,5'S)-5'-((E)-(S)-8-Benzyloxy-1-hydroxy-oct-4-enyl)-tetrahydro-[2,2']bifuranyl-5-one

(2R,2'S,5'R)-5'-((E)-(S)-8-Benzyloxy-1-hydroxy-oct-4-enyl)-tetrahydro-[2,2']bifuranyl-5-one