合成路线:The synthesis of CP-93,318 is summarized:Treatment of 4-methyl-5-imidazolemethanol (I) with thionyl chloride affords chloromethylimidazole (II).Exposure of (II) to potassium cyanide provides nitrile (III),and subsequent reaction of (III) with diethyldithiophosphate in the presence of hydrochloric acid gives thioamide (IV),as its hydrochloride salt.Condensation of this hygroscopic salt with 2-bromo-2'-methoxyacetophenone (V) provides thiazole CP-93,318.Analogues of CP-93,318,modified at the methoxyphenyl moiety,were prepared similarly by condensation of convergent intermediate (IV) and the appropriate alpha-haloketone.
合成路线:The synthesis of a tritiated analogue of CP-93,318 is as follows:Treatment of the phenacyl bromide (V) with N-bromosuccinimide in methanol affords selectively bromo derivative (VI).Subsequent condensation of (VI) and thioamide (IV) (Scheme 1) provides tritiation precursor (VII).Exposure of (VII) to tritium in the presence of palladium on carbon (triethylamine/tetrahydrofuran) followed by purification using high-performance liquid chromatography provides [3H]-CP-93,318 (specific activity: 16.2 Ci/mmol,radiochemical purity greater than or equal to 98%).
参考文献标题:CP-93,318
文献作者:Rosen,T.; Nagel,A.A.
参考来源:Drugs Fut 1991,16(11),992
合成路线:The synthesis of CP-93,318 is summarized:Treatment of 4-methyl-5-imidazolemethanol (I) with thionyl chloride affords chloromethylimidazole (II).Exposure of (II) to potassium cyanide provides nitrile (III),and subsequent reaction of (III) with diethyldithiophosphate in the presence of hydrochloric acid gives thioamide (IV),as its hydrochloride salt.Condensation of this hygroscopic salt with 2-bromo-2'-methoxyacetophenone (V) provides thiazole CP-93,318.Analogues of CP-93,318,modified at the methoxyphenyl moiety,were prepared similarly by condensation of convergent intermediate (IV) and the appropriate alpha-haloketone.
参考文献标题:Thiazole as a carbonyl bioisostere.A novel class of highly potent and selective 5-HT3 receptor antagonists
文献作者:Rizzi,J.P.; Guarino,K.; Vincent,L.A.; Ganong,A.H.; Siok,C.J.; Ives,J.L.; Nowakowski,J.T.; Seeger,T.F.; Rosen,T.; Heym,J.; Nagel,A.A.; Daffeh,J.B.; McLean,S.; Schmidt,A.W.
参考来源:J Med Chem 1990,332715-20
产品链接: CAS No. 129486-32-4››