An N,N-disubstituted cyclo-beta(3)-tetrapeptide, identified as a potential
molecular scaffold, has been synthesised on a multigram scale from beta-hom
ophenylalanine by employing a nosylate-based protection strategy. C-2-Symme
tric derivatives containing pseudoaxial, combinatorially addressable functi
onalities have been prepared from the parent cyclopeptide. (C) 2000 Elsevie
r Science Ltd. All rights reserved.