A) Nitrogen-directed homoallylic free-radical rearrangements for the construction of bridged azacycles B) Studies on a total synthesis of the microbial immunosuppressive agent FR90... by Bebbington, M, Bourissou, D, Bouhadir, G, Bontemps, S, Weinreb, S, Kropf, J, Meigh, I, Hodgson, D, Willis, P