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Stacking Interactions of nucleobases: NMR-Investigations I. Selfassociation of N6,N9-Dimethyladenine and N6-Dimethyl-N9-Ethyladenine

✍ Scribed by W. Schimmack; H. Sapper; W. Lohmann


Book ID
104796691
Publisher
Springer
Year
1975
Tongue
English
Weight
490 KB
Volume
1
Category
Article
ISSN
1432-1017

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N6',N9-Octamethylenepurine cyclophane, 1 ,has been synthesized by intramolecular cyclization. Its pmr spe7trum shows all 16 methylene protons to be resolved, their chemical shifts ranging from -0.6 to +4.8 ppm. Much interest has been expressed in the chemical shift effects of the aromatic purine and