In this article, the patent literature from the first half of 1992 thr
ough to the last half of 1996 is reviewed. The recent strategies used
to develop antiviral therapies for the treatment of rhinovirus infecti
ons are described. These include new developments in the design of 'cl
assical' uncoating inhibitors and inhibitors of picornaviral proteases
. In particular, discovery efforts from groups at Janssen, Sandoz, Sch
ering-Plough and Sterling Winthrop have led to identification of broad
er acting and more potent uncoating inhibitors. The in vitro and in vi
vo effects of these promising new inhibitors are described. The abilit
y to inhibit the proteolytic activity of picornaviral proteases has be
en demonstrated by a new class of peptidyl-aldehydes from the Chiron a
nd Lilly research groups. This new approach as a potential antiviral t
herapy is described.