title: Some short-chain N6-substituted adenosine analogues with antitumor properties.
abstract: The compounds N6-allyl-, N6-isopropyl-, N6-propargyl-, and N6-(2-methylallyl)adenosine were prepared by reacting 6-chloropurine riboside with an excess of the corresponding amines in ethanol, in the presence of two acid acceptors resulting in virtually quantitative yields. The compounds showed biological activity in a number of in vitro and in vivo tumor cell systems. Very good increases in life spans of mice bearing mammary carcinoma were obtained by treatment with the N6-allyl, N6-isopropyl, and N6-propargyl analogues, respectively. In rats, the N6-allyl analogue slowed the rate of transplantable mammary tumor growth by one-fourth. The short-chain adenosine analogues are more active in the treatment of animal carcinomas than in the leukemia or sarcoma tumor cell systems.
mesh_terms: D000241:Adenosine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis*; D002478:Cells, Cultured; D055598:Chemical Phenomena; D002621:Chemistry; D005260:Female; D007939:Leukemia L1210 / Q000188:drug therapy; D051379:Mice; D009374:Neoplasms, Experimental / Q000188:drug therapy; D051381:Rats
chemical_list: D000970:Antineoplastic Agents; D000241:Adenosine