## Abstract 1‐O‐ and 5‐O‐Methyl‐^14^C‐myo‐inositols (methyf‐^14^C‐bornesitol and ‐sequoyitol) were synthesized by methylation of appropriately blocked myo‐inositol derivatives with methyl = ^14^C iodide and potassium hydroxide. The benzyl blocking groups of 1‐O‐methyl‐^14^C‐3,4,5, 6‐tetra‐O‐benzyl‐
Synthesis of 1-[14C]methyl-1H-tetrazole-5-thiol([14C]NMTT) and [NMTT-[14C]]latamoxef
✍ Scribed by T. Nagasaki; Y. Katsuyama; M. Yoshioka
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- French
- Weight
- 289 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
The title com ounds were prepared for metabolic studies, with the 14C labelen bein made a t methyl of the l-methyl-1H-tetrazol-5-ylthio ( k M d group in overall-radiochemical yglds of 26% and 22% based on barium [14C]carbonate, respectively.
📜 SIMILAR VOLUMES
## Abstract A scheme is developed for synthesizing ^14^C labelled α‐acetates of secondary α‐hydroxylated nitrosamines. In this manner ^14^C‐methyl (1‐acetoxy)ethyl nitrosamine and 1‐^14^C‐ethyl (1‐acetoxy)ethyl nitrosamine are synthesized in 16.3 and 33.3% yield, radiochemically pure.
## Abstract Diazepam‐^14^C and demethyldiazepam‐^14^C are synthesized from glycine‐1‐^14^C. Addition of diketene to diazepam‐^14^C leads to ketazolam‐^14^C. The reaction conditions for the formation of ketazolam from diazepam is studied using high‐pressure liquid chromatography in conjunction with
therefore been incorporated in this isoprenoid. The
## Abstract Two labeled isotopomers of L‐tyrosine, L‐Tyr, have been synthesized using specific properties of the enzymes phenylanine ammonia lyase, PAL, and L‐phenylalanine hydroxylase. In an intermediate step [1‐^14^C]‐, and [2‐^14^C]‐L‐phenylalanine, L‐Phe, have been obtained from [1‐^14^C]‐, and