Zhang, Dan-Jie Synthesis of Azacyclic Nucleoside Analogues via Asymmetric [3 + 2] Cycloaddition of 9-(2-Tosylvinyl)-9H-purines. [electronic resource] - Organic letters Feb 2016 - 820-3 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1523-7052 Standard No.: 10.1021/acs.orglett.6b00108 doi Subjects--Topical Terms: CatalysisCombinatorial Chemistry TechniquesCycloaddition ReactionEstersMolecular StructureNucleosides--chemical synthesisPurines--chemistryStereoisomerism