The H -antagonists, metiamide and cimetidine were labelled 2 with deuterium and tritium in the 2-position of the imidazole ring by the uncatalyzed exchange reaction with deuterium and tritium oxide at 100°C. The sulfur-35 labelled metiamide was prepared by an exchange reaction with elemental sulfur-
Synthesis of tritium-labelled BIBN4096, an experimental h-CGRP-antagonist
✍ Scribed by V. P. Shevchenko; I. Yu. Nagaev; N. F. Myasoedov; A. B. Susan; K.-H. Switek; H. Braunger
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- French
- Weight
- 140 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Synthesis of tritium labelled BIBN 4096 -1-piperidine-
antagonist for the treatment of migraine is described. Selective tritiation of a heterocyclic aromatic fragment in the presence of aromatic ring in a precursor of BIBN4096 was successfully carried out using the solid state catalytic exchange method. Subsequent completion of the synthesis sequence gave the final [ 3 H]BIBN4096 with a specific activity of >170 Ci/mmol.
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