abstract |
Compound of formula wherein the dotted bond is optional, B OH or OC (O) R; C NHC (O) R¹ or N = CH-NR²R³; R, R¹, R² and R³ independently of one another represent straight-chain or branched alkyl, alkoxyalkyl, aralkyl, aryloxyalkyl or aryl, are effective against retroviral infections, in particular AIDS. |