## Abstract ^14^C labelled phospholipid synthesis through the use of “cyclic enediolpyrophosphate”. Ramirez's phrophosphate **1** was used in a one pot convenient synthesis of a few [1‐^14^C]‐acyl phospholipids. Reagent **1** was condensed with 1,2‐[1‐^14^C] dipalmitoyl Sn‐glycerol to the cyclic t
Synthese d'une serie de calix[8]arenes marques au carbone 14
✍ Scribed by C. Montagne-Marcellin; M. Archimbaud; E. Ansoborlo; H. J. Cristau
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- French
- Weight
- 263 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
This paper describes syntheses of paratertiobutyl calix[8]arene, calix[8]arene, and parasulfonic calix[8]arene acid, labelled with ^14^C on the methylene position. Parasulfonic calix[8]arene acid when injected to rats, allowed to know the hydrosoluble calixarenes distribution in organism. Initial labelled reactant is Amersham formaldehyde. ^1^H.NMR spectra of each compound and assembly of the first two syntheses are described.
📜 SIMILAR VOLUMES
## Abstract Classical phospholipids syntheses were selected and adapted to the preparation of natural glycerophospholipids labelled with carbon 14 in the acyl moiety. 1,2‐(^14^C) diacyl‐3‐bromo sn‐glycerol was the starting material. Saturated ^14^C‐phosphatidyl‐ethanolamine, choline and serine wer
## Abstract Methylsulfinylcarbanion used in large excess reacts with methyl (carboxyl ^14^C) vanillate **2** a, methyl (carboxyl ^14^C) isovanillate **2** b and methyl 3,4 dibenzyloxy (carboxyl ^14^C) benzoate **2** d to give 90 % yields of β‐ketosulfoxides **3** a, **3** b, **3** d. Submitted to t
## Abstract Benzoyl chloride‐7^14^C is condensed with tris(trimethylsilyl) 1‐lithio‐1,1,2 propane tricarboxylate, which after hydrolysis gives rise to a 66% yield of 2‐methyl‐3‐(benzoyl‐7‐^14^C) propionic acid. After cyclisation with hydrazine, followed by treatment with bromine in acetic acid, 3‐h
N -b u t y l a z i d o d e r i v a t i v e , Synthesis l a b e l l e d analogue . 0362-4803/86/03O257-1OSO5 .OO @ 1986 by John Wiley & Sons, Ltd.
## Abstract 2‐Thenoic acid (^14^C = 0) 1 is prepared in 75 % radioactive yield by carbonation with ^14^CO~2~ of 2‐thienyL‐magnesium bromide. Boiling of 1 with oxalyl chloride gives rise to 2‐thenoylchloride (^14^CO) which is not isolated and is condensed with 2,3 dichLoroanisoLe under FrieLdeL‐Graf