1. Lindenmaier, W., Necker, A., Krause, S., Bonewald, R. and Collins, J., Arch. Virol, (1990) in press.
2. Active esters were prepared by standard procedures. Stock solutions (0.1 to 1 ml) were used throughout one working day. Special side chain protection: Asn(Tmob), Arg(Pmc), Gln(Tmob), His(Boc).
3. Krchnak, V., Vagner, J., Safar, P. and Lebl, M., Collect. Czech. Chem. Commun., 53(1988)2542.
4. Pearson, D.A., Blanchette, M., Baker, M.L. and Guindon, C.A., Tetrahedron Lett., 30(1989)2739.
5. For details of the antibody binding assay see: Harlow, E. and Lane, D., Antibodies: A Laboratory Manual, 1st ed., Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 1988, p. 408.