| saliniketals a and b, bicyclic polyketides from the marine actinomycete salinispora arenicola. | an extensive study of the secondary metabolites produced by several strains of the marine actinomycete salinispora arenicola has led to the isolation of two unusual bicyclic polyketides, saliniketals a and b (1, 2). the structures, which contain a new 1,4-dimethyl-2,8-dioxabicyclo[3.2.1]octan-3-yl ring, were assigned mainly by 2d nmr spectroscopic methods. unexpectedly, chemical derivatization of saliniketal a with mosher's acid chloride resulted in a functional group interconversion of an unsat ... | 2007 | 17253854 |