Abstract
The structure of a new streptomycete metabolite sphydrofuran was determined as an anomeric mixture of 3, 4, 5'-trmydroxy-S'-methyl-2, 3-spirobi(tetrahydrofuran) (A1 and A2) which is brought into an equilibrium mixturewith trans-3, cis-4-dihydroxy-trans-2-hydroxymethyl-2-acetonyl (tetrahydrofuran)(A3) in some solvents.