ADENOSINE-DEAMINASE INHIBITORS - SYNTHESIS AND BIOLOGICAL EVALUATION OF C1' AND NOR-C1' DERIVATIVES OF (+)-ERYTHRO-9-(2(S)-HYDROXY-3(R)-NONYL)ADENINE

The synthesis of various chiral derivatives of (+)-erythro-9-(2-hydroxy-3-nonyl)adenine, (+)-EHNA, from (2S,3R)-3-amino-1,2-O-isopropylidene-1,2-nonanediol by condensation with 5-amino-4,6-dichloropyrimidine is described. The compounds synthesized were Cl'- and nor-Cl'-(+)-EHNA derivatives. When tested with calf spleen ADA, Cl'-OH- and nor-Cl'-(+)-EHNA had comparable inhibitory activity that was 1 order of magnitude lower than that of (+)-EHNA. Potency was reduced further in nor-Cl' derivatives.