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- W1498208707 abstract "Anions of β,β-disubstituted acetyl acetates (2, CH2COCR1R2COOR3; R1= R2 = Me2 R1 = Et, R2 = COOMe, R1 = Et, R2 = SPh) add to 1-tosyl-3,4,4-trimethyl-Δ -imidazolinium iodide (3) to give the corresponding imidazolines (4), which are regarded as models of methylenetetrahydrofolate These models transfer C(2) of the imidazalodine -with its appended carbon fragment- to tryptamine and 2-(3,4-dimethoxybenzene)ethyl amine to yield enaminoketo ester intermediates which can be converted into benzo[a]quinolizine and indolo[2,3-a]quinolizine derivatives, respectively, in two cyclization steps. The intermediate derived from transfer of carbon fragment CH-CH2COC(SPh) (Et) COOMe to tryptamine exhibits reactions which involve nucleophilic displacement at a sulfur atom of a thio ether bond." @default.
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- W1498208707 date "1985-01-01" @default.
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- W1498208707 title "Models of folate coenzymes 13" @default.
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