[Acyclic nucleoside analogs: synthesis and cytotoxic properties of acyl derivatives of 3'(5')-amino-3'(5')-deoxy-2',3'-secoadenosine].

Interaction of 3'-amino-3'-deoxy-2',3'-secoadenosine with the N-hydroxysuccinimide esters of nicotinic or quinaldic acids and with 1-nitroanthraquinone-2-carboxylic acid in the presence of 2-ethoxy-1-ethoxy-carbonyl-1,2-dihydroquinoline led to the corresponding amides. To obtain 5'-modified 2',3'-secoadenosine analogs, 5'-deoxy-5'-nicotinoylamido-, 5'-deoxy-5'-(quinoline-2- carbonylamido)-, and 5'-deoxy-5'-[3-(3-indolyl)propionylamido]adenosine were subjected to the periodate oxidation--sodium borohydride reduction procedure. Structures of the synthesized compounds were was confirmed by 1H NMR spectroscopy, 2',3'-Diamino-2',3'-deoxy-, 3'-deoxy-3'-(quinoline-2-carbonylamido)-, and 5'-deoxy-5'-[3-(3-indolyl)propionylamido]-2',3'-secoadenosines+ ++ exhibited a cytotoxic effect on CaOv cells in vitro (CE50 10-30 microM).