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

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

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