## Abstract RPCNU was labelled with ^14^C on three positions: ‐ On the carboxyl of the acetyl groups ‐ On the carboxyl of the acetyl groups ‐ On the urea carbonyl
Marquage par 14C et 3H du 4,4-dimethyl-1-(methylendioxy-3,4 phenyl)-1-pentene-3- ol ou stiripentol
✍ Scribed by J. C. Madelmont; J. M. Dupuy; M. Rapp; P. Labarre; J. C. Maurizis; F. Lepage; A. Veyre
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- French
- Weight
- 264 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
4,4‐dimethyl‐1‐(3‐4‐methylenedioxyphenyl)‐1‐pentene‐3‐ol or stiripentol was labelled by ^14^C and ^3^H.
^14^C labelling was performed on the carbone 1 of the pentene group via a four steps procedure after the carbonatation. The radiochemical yield calculated from the precursor (Ba^14^CO~3~) is 28%.
^3^H labelling was performed on the position 3 of the pentene chain by reduction of the corresponding cetone via NaBT~4~. The radiochemical yield calculated from the precursor (NaBT~4~) is 40%.
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The ^14^C labelling of three compounds : HI‐6, TMB‐4 and pyrimidoxime is described from ^14^C‐formic acid, sodium salt. The compounds were prepared by lithiation and formylation with N‐methyl (^14^C)‐formanilide followed by introduction of the hydroxylamine moieties and alkylation of the pyridine. R
A novel fungicide, (-) (E)-1-( 2,4-di chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1-penten-3-ol (S-3308 L) and i t s three o p t i c a l l y active stereoisaners were labeled w i t h carbon-14 a t the t r i a z o l e r i n g f o r use i n the metabolic and environmental f a t e studies. 1 ,2,
## Abstract 9‐Hydroxy‐ellipticine (^14^C‐1), specific activity: 2,13 mCi/mM, has been synthesized for molecular biology and cancer research, from N‐methyl‐formanilide (^14^C‐formyl). The radioactive overall yield was 13,5% based on sodium formate ^14^C.
The two compounds were labelled by ^14^C on the hydroxyimino methyl group substituted on the 2 positions of the pyridinium ring. The convenient pyridinium lithiated intermediates were formylated with N‐methyl ^14^C‐formanilide. The hydroxyimino methyl groups were synthezised by reaction of the ^14^