(untitled) - Caines,M.E.C.; Hancock,S.M.; Tarling,C.A.; Wrodnigg,T.M.; Stick,R.V.; Stütz,A.E.; Vasella,A.; Withers,S.G.; Strynadka,N.C.J. (Angew. Chem. Int. Ed., 2007)