The recent emergence of combinatorial chemistry has greatly advanced t
he development of biologically active lead compounds. It is anticipate
d that combinatorial library technology will add great value to the fi
ght against drug-resistant bacterial strains, which pose increasingly
serious health hazards, Owing to the need to use complex cell-based as
says and, in turn, to screen free compounds in solution, the potential
use of combinatorial libraries in the field of infectious diseases ha
s not yet been fully explored. Despite these limitations, a number of
new antimicrobial and/or antifungal compounds have been successfully i
dentified from pools of millions of other compounds.