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Synthesis of crown-containing xanthine derivatives

โœ Scribed by E. I. Ivanov; A. A. Polishchuk; G. D. Kalayanov


Publisher
Springer US
Year
1992
Tongue
English
Weight
281 KB
Volume
28
Category
Article
ISSN
0009-3122

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## Abstract 3โ€[Methylโ€^13^C]xanthine, 7โ€[Methylโ€^13^C]xanthe, 1,3โ€[Dimethylโ€^13^C~2~]xanthine (theophyllineโ€1,3โ€[^13^CH~3~]~2~), 1,7โ€[Dimethylโ€^13^C~2~]xanthine (paraxanthineโ€1,7โ€[^13^CH~3~]~2~), and 3,7โ€[Dimethylโ€^13^C~2~]xanthine (theobromineโ€3,7โ€[^13^CH~3~]~2~) were synthesized by nucleophilic s