## Abstract The synthesis of the C‐14 labeled isotopomer of LY300502, a potent 5α‐reductase inhibitor has been accomplished in four radiochemical steps. The route involves the synthesis of LY300502‐[^14^C] from LY300502 __via__ a circuitous route; the label was introduced with ethyl chloroformate‐[
The synthesis of 3-methyl-2-[4-14C]thiohydantoin a pharmacologically active metabolite of the antithyroid drug methimazole
✍ Scribed by Hugh T. Hood; Graham G. Skellern
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- French
- Weight
- 143 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Under basic conditions [^14^C]glycine reacts with methyl isothiocyanate producing 5‐methylthiohydantoic acid which cyclises at acidic pH to 3‐methyl‐2‐[4‐^14^C]thiohydantoin.
📜 SIMILAR VOLUMES
## Abstract Synthesis of 4‐hydroxyindole labeled with ^14^C at the 2‐position was accomplished based on the vicarious nucleophilic substitution reaction of benzyl‐protected 3‐nitrophenol with __p__‐chlorophenoxyacetonitrile‐[1‐^14^C]. This was followed by the reductive cyclization of __o__‐nitrocya
## Abstract Two benzodiazepines, Diazepam and Flunitrazepam, labeled with carbon‐14 in position 5 of the diazepine ring have been synthesized. Use of a condensation between iminochlorides and ^14^C‐benzonitriles, followed by exhaustive methylation of the resulting quinazolines and hydrolyses is des
## Abstract Starting from the chiral compound 1, (R)‐(+)‐2‐methyl‐1,4‐[^14^C]butanediamine 7 was synthesized in a sequence of reactions in which ^14^C‐label was introduce using label potassium cyanide. Compound 7 was reacted with potassium tetraiodoplatinate and silver 1,1‐cyclobutanedicarboxylate