Several 1,2,3,4-tetrahydro- and 7-N-hydroxycarbamate derivatives of the nat
ural product rapamycin were prepared and assayed for their immunosuppressiv
e and antifungal profiles. Substitutions at the 7-position indicate the pos
sibility of a differentiated immunosuppressive to antifungal profile, where
as 40-position variants of the tetrahydro-analogues did not show similar di
fferentiated activity. (C) 2000 Published by Elsevier Science Ltd. All righ
ts reserved.