合成路线:The intermediate amine (V) was prepared via a Heck reaction between p-bromophenylacetonitrile (I) and tert-butyl acrylate (II) to afford the p-(cyanomethyl)cinnamate (III) .Catalytic double bond hydrogenation in (III) provided the saturated cyano ester (IV),which was then reduced to amine (V) by using NaBH4 in the presence of CoCl2.Alternatively,simultaneous double bond and cyano group reduction was accomplished by hydrogenation of (III) in the presence of Pd/C and HCl.
合成路线:Acetonide (VII) was prepared by treatment of 2-chloroadenosine (VI) with 2,2-dimethoxypropane and camphorsulfonic acid.Subsequent oxidation of (VII) with KMnO4 under basic conditions produced the carboxylic acid (VIII).After activation of (VIII) as the corresponding acid chloride (IX),reaction with ethylamine afforded amide (X).Condensation of amine (V) with the chloroadenosine derivative (X) at 130 C furnished the diaminopurine adduct (XI).Finally,simultaneous cleavage of the tert-butyl ester and acetonide groups of (XI) upon acidic treatment provided the title compound
参考文献标题:2-(Arylalkylamino)adenosin-5'-uronamides: A new class of highly selective adenosine A2 receptor ligands
文献作者:Hutchison,A.J.; Williams,M.; de Jesus,R.; Yokoyama,R.; Oei,H.H.; Ghai,G.R.; Webb,R.L.; Zoganas,H.C.; Stone,G.A.; Jarvis,M.F.
参考来源:J Med Chem 1990,33(7),1919
产品链接: CAS No. 120225-54-9››