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A New, Improved Synthesis of 9-Benzyladenine: An Important Heterocyclic Analogue of Adenosine Useful for Chemical and Biochemical Research of Nucleic Acids
1 , * 2
1  Research Institute of Elemento Organic Chemistry, Nankai University 94 Weijin Road, Tianjin 300071, Peoples Republic of China
2  Laboratory for Drug Design and Synthesis, Department of Chemistry & Biochemistry University of Maryland, Baltimore County (UMBC), 1000 Hilltop Circle Baltimore, Maryland 21250, USA

Abstract: 9-Benzyladenine (I) is a rare chemical often used by chemists, biochemists, as well as biophysical chemists doing research in the field of nucleic acids as a convenient heterocyclic base model for physicochemical comparison with adenosine. However, I is commercially unavailable, and the synthetic methods available from the literature are tedious and poor yielding. We have synthesized I from 5-amino-1-benzyl-4-cyanoimidazole (II) which, in turn, was synthesized from acyclic precursors, III, IV or V, using three different methods. We report herein all these methods, along with our recommendation for the best method in terms of both convenience and product yield to access both the imidazole precursor II and the target 9-benzyladenine (I).
Keywords: Improved Syntheses of 9-Benzyladenine and 5-Amino-4-cyano-1-benzylimidazole

 
 
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