【药物名称】Ridogrel, R-68070, Ibidel
化学结构式(Chemical Structure):
参考文献No.6230
标题:Pharmaceutical use of [[[(3-pyridinyl)methylen]amino]oxy]alkanoic acid and esters
作者:Freyne, E.J.E.; Raeymaekers, A.H.; Sipido, V.; Venet, M.G. (Janssen Pharmaceutica NV)
来源:EP 0221601; JP 1987161759; JP 1991068556; US 4746671
合成路线图解说明:

Grignard reaction of 3-trifluoromethylbenzene-magnesium bromide (II) with 3-pyridinecarboxaldehyde (I) in THF at 15 C gives alpha-[3-(trifluoromethyl)phenyl]-3-pyridinemethanol (III). Oxidation of this compound with MnO2 in refluxing CH2Cl2 yields the corresponding ketone (IV). The oximation reaction carried out with NH2OH.HCl in isopropanol-HCl at 70 C affords (3-pyridinyl)-[3-(trifluoromethyl)phenyl]methanone oxime (V) (more than 90% of the E-isomer). The alkylation of (V) with ethyl bromovalerate in the presence of NaOH in DMF produces ethyl 5-[[[(3-pyridinyl)[3-(trifluoromethyl)phenyl]methylene]amino]oxy] pentanoate (VI). Hydrolysis of the ester with aqueous NaOH followed by HCl treatment gives, after recrystallization from diisopropylether, ridogrel.

参考文献No.127622
标题:RIDOGREL
作者:Freyne, E.J.; Raeymaekers, A.H.M.; Venet, M.G.; Sipido, V.K.; De Clerck, F.
来源:Drugs Fut 1990,15(5),463
合成路线图解说明:

Grignard reaction of 3-trifluoromethylbenzene-magnesium bromide (II) with 3-pyridinecarboxaldehyde (I) in THF at 15 C gives alpha-[3-(trifluoromethyl)phenyl]-3-pyridinemethanol (III). Oxidation of this compound with MnO2 in refluxing CH2Cl2 yields the corresponding ketone (IV). The oximation reaction carried out with NH2OH.HCl in isopropanol-HCl at 70 C affords (3-pyridinyl)-[3-(trifluoromethyl)phenyl]methanone oxime (V) (more than 90% of the E-isomer). The alkylation of (V) with ethyl bromovalerate in the presence of NaOH in DMF produces ethyl 5-[[[(3-pyridinyl)[3-(trifluoromethyl)phenyl]methylene]amino]oxy] pentanoate (VI). Hydrolysis of the ester with aqueous NaOH followed by HCl treatment gives, after recrystallization from diisopropylether, ridogrel.

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