SYNTHESIS OF N-(3-AZIDO-2-HYDROXYPROPYL), N-(3-PHTHALIMIDO-2-HYDROXYPROPYL) AND N-(3-AMINO-2-HYDROXYPROPYL) DERIVATIVES OF HETEROCYCLIC BASES

Alkylation of heterocyclic bases with azidomethyloxirane (I) under basic catalysis with potassium or cesium carbonate afforded N-(3-azido-2-hydroxypropyl) derivatives II. Hydrogenation of these compounds over palladium on carbon gave the corresponding 3-amino-2-hydroxypropyl derivatives III. The same compounds III were prepared by alkylation of heterocyclic bases with phthalimidomethyloxirane (VII) in the presence of cesium carbonate and subsequent reaction of the formed N-(3-phthalimido-2-hydroxypropyl) derivatives VIII with hydrazine. The phthalimido derivatives VIII are easily hydrolyzed already in weakly alkaline aqueous medium to give 9-[3-(o-carboxybenzoylamino)-2-hydroxypropyl] derivatives IX and X.