## Abstract Mepindolol, a potent ß‐adrenoceptor blocking agent, was labelled with ^14^C by two different routes yielding the 2‐[^14^C]methyl and [2‐^14^C] products. While the first alternative was abandoned because of low overall yield, the latter route provided mepindolol with a specific activity
Synthesis of 14C-labelled 1-(4-chlorobenzyl)-3-methyl-3-(2-hydroxyethyl)-thiourea
✍ Scribed by K. Esses-Reiter; J. Reiter
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- French
- Weight
- 164 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
1‐(4‐Chlorobenzyl)‐3‐methyl‐3‐(2‐hydroxyethyl)‐thiourea labelled with ^14^C at its urea group was synthesised starting from potassium cyanide‐^14^C, via potassium thiocyanate‐^14^C, 4‐chlorobenzyl‐thiocyanate‐^14^C and 4‐chlorobenzyl‐isothiocyanate‐^14^C. The conditions of the isomerisation of 4‐chlorobenzyl‐thiocyanate‐^14^C to 4‐chlorobenzyl‐isothiocyanate‐^14^C were studied in detail.
📜 SIMILAR VOLUMES
2-14C-oxazepam (z) d 4 C -(+)and -(-1 -7-chloro-l--methyl-5-phenyl-1,3,4,5-tetrahydro-3H-l,4-benzodiazepine-2--one (s and 2) as well as 2-14C-7-chloro-4-carbamoyl-l-methyl--5-phenyl-1,3,4,5-tetrahydro-3H-l,4-benzodiazepine-2-one (9-1 were synthesised from ~arbobenzoxy-glycine-1-~~C. The overall rad
## Abstract ^14^C‐Labelled myosmine ([2′‐^14^C]‐3‐(1‐pyrrolin‐2‐yl)pyridine) was synthesized for autoradiography studies starting from [carboxyl‐^14^C]‐nicotinic acid by initial esterification of the latter in the presence of 1,1,1‐triethoxyethane. Without any purification the ethyl nicotinate form
During p r e l i m i n a r y work with u n l a b e l l e d compounds, an attempt was made t o carbonate t h e Grignard r e a g e n t prepared from 2-bromo-2-methylpropane according t o i. No a c i d was i s o l a t e d .
## Abstract The syntheses of 4‐amino‐3,2′‐dimethyl‐biphenyl‐3‐methyl‐^14^C, a potent carcinogen and mutagen, and 4‐amino‐2′‐methylbiphenyl‐2′‐methyl‐^14^C, an analogue having weaker activity, are described. In both cases, label was introduced with Cu^14^ CN.
## Abstract A simple and convenient synthesis of a radiolabeled antihypertensive pyridazinone was developed. The product was purified chromatographically, and the chemical and radiochemical purities of the sample were determined.