The first members of a new class of designed bryostatin analogues are
synthesized using a novel, convergent macrotransacetalization strategy
. These simplified analogues, lacking the A-ring of bryostatin 1 and p
ossessing a simplified B-ring, exhibit significant protein kinase C bi
nding affinities and growth inhibitory activities against several huma
n cancer cell lines. (C) 1998 Elsevier Science Ltd. All rights reserve
d.