Synthesis of [trifluoromethyl‐[
14
C
6
]‐phenyl]‐SR 57746A
摘要:
[Trifluoromethyl-L[C-14(6)]-phenyl]- SR 57746A 4, a neurotrophic and neuroprotective compound, has been synthesized for metabolic and pharmacokinetic studies. The key step for its synthesis was the preparation of 3-trifluoromethyl-[C-14(6)]-bromobenzene 1. This compound was obtained in 4 steps from [C-14(6)]-nitrobenzene 10 via [C-14(6)]-3-iodo-nitrobenzene 11, 3-trifluoromethyl-[C-14(6)]-nitrobenzene 8, 3-trifluoromethyl-[C-14(6)]-aniline 9. The overall yield for the 4 steps was 35%, the specific activity was 29 mCi/mmol and the radioactive purity was better than 98%. The Grignard reagent of 1 gave the title compound after condensation with N-(2-naphthylethyl)-4-piperidone 12 and dehydration.
Synthesis of [trifluoromethyl‐[
14
C
6
]‐phenyl]‐SR 57746A
摘要:
[Trifluoromethyl-L[C-14(6)]-phenyl]- SR 57746A 4, a neurotrophic and neuroprotective compound, has been synthesized for metabolic and pharmacokinetic studies. The key step for its synthesis was the preparation of 3-trifluoromethyl-[C-14(6)]-bromobenzene 1. This compound was obtained in 4 steps from [C-14(6)]-nitrobenzene 10 via [C-14(6)]-3-iodo-nitrobenzene 11, 3-trifluoromethyl-[C-14(6)]-nitrobenzene 8, 3-trifluoromethyl-[C-14(6)]-aniline 9. The overall yield for the 4 steps was 35%, the specific activity was 29 mCi/mmol and the radioactive purity was better than 98%. The Grignard reagent of 1 gave the title compound after condensation with N-(2-naphthylethyl)-4-piperidone 12 and dehydration.