𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Approaches to the labelling of xanthines

✍ Scribed by J.A. Troke


Publisher
Elsevier Science
Year
1988
Weight
62 KB
Volume
39
Category
Article
ISSN
0883-2889

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## Abstract 3‐[Methyl‐^13^C]xanthine, 7‐[Methyl‐^13^C]xanthe, 1,3‐[Dimethyl‐^13^C~2~]xanthine (theophylline‐1,3‐[^13^CH~3~]~2~), 1,7‐[Dimethyl‐^13^C~2~]xanthine (paraxanthine‐1,7‐[^13^CH~3~]~2~), and 3,7‐[Dimethyl‐^13^C~2~]xanthine (theobromine‐3,7‐[^13^CH~3~]~2~) were synthesized by nucleophilic s