Carbon-14 labelled fl-methyl-iodohexadecanoic acid (MIHA) was obtained in a four step sequence using Na14CN, starting from 15-tetrahydropyranyloxy-2-methyl-pentademol-p-toluene sulfonate z. The specific radioactivity was 55 mCi/mmol and the radiochemical yield 41% of the theoretical maximum.
Synthesis of 14-methyl[2,3-3H]hexadecanoic acid
β Scribed by O. Helmich; M. Streibl; J. Filip; J. Hradec
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- French
- Weight
- 285 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
14-MethylC2, 3-3Hlhexadecanoic acid of a specific radioactivity of 5 1 Ci/mmol was pepared starting from 12-methyltetradecanoic acid isolated from wool fat. This fatty acid was converted into 12-methyltetradecanal which was reacted with ethyl diethylphosphonoacetate to yield 14-methylhexadecen-2-oic acid. "he resulting compound was tritiated with gaseous ' H 2 in the presence of a 5s Pd/BaS04 catalyst.
The reaction in dried dioxane gave products of a specific radioactivity corresponding to 87.9% of the theoretical value.
π SIMILAR VOLUMES
A synthesis of 3-cyano-4-methyl-5 ( 14 C)-methyl-2-(5-14C)pyrrolyloxamic acid is described. The compound, having specific activity of 66.7 pCi/mmole, was obtained in 19.68% overall yield from uniformly labelled 14C-l-alanine. 14 14 Key Words: 3-Cyano-4-methyl-5( C)-methyl-2-(5-C)pyrrolyloxamic acid,
The preparation of 14f41abeled (\*)-2-methyl-3,3-diphenyl-3propanolamine (2) from [ Cl-carbonyl-benzophenone is described.
## Abstract The title product was labelled with ^14^C at the ketone group, from 3βmethoxybromobenzene in six steps. Complete synthetic techniques of the labelled drug are presented.
## Abstract Nuclear decay of C^3^H~4~ in the presence of gaseous furan represents a simple and convenient synthetic route to carrierβfree multitritiated 3βmethylβ and 2βmethylβfuran. Their application for biological studies appears particularly promising, on account of the favourable characteristic