Me. Raggatt et al., Biosynthesis of XR587 (streptopyrrole) in Streptomyces rimosus involves a novel carbon-to-nitrogen rearrangement of a proline-derived unit, CHEM COMMUN, (11), 1999, pp. 1039-1040
Results from incorporation studies with C-13-labelled acetate, propionate a
nd proline establish a polyketide origin for the pyrrole-containing strepto
mycete metabolite, XR587, and are in accord with the formation of an amide
bond via an unprecedented rearrangement of a proline-derived starter unit.