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- W2469053785 abstract "When ethyl 3, 4-dihydro-6, 7-dimethoxyisoquinoline-1-carboxylate (IV) and ethyl acetate were subjected to the Claisen condensation, V was obtained, being accompanied with dehydrogenation. With a view to synthesize calycotomine resembling compounds, as well as to examine their pharmacological actions, hydrolyzed product (VI) of V was reduced with NaBH4 to VII, which was transfered to 1-ethylisoquinoline derivative (X) by hydrogenolysis when VII was reduced with Zn powder. VIII was prepared by acetylation of VII with acetic anhydride. Further, 3-ethoxycarbonyl compound (XII) afforded 3-hydroxymethyl compound (XIII), with which veratraldehyde were condensed to oxazoisoquinoline compound (XIV). From the steric structure of XIV, substitution groups of XIII as the 1- and 3-position was assumed to be in cis configuration." @default.
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- W2469053785 date "1967-01-01" @default.
- W2469053785 modified "2023-09-23" @default.
- W2469053785 title "Synthesis of Related Compounds of Calycotomine. : Studies on the Syntheses of Heterocyclic Compounds. CXCI." @default.
- W2469053785 doi "https://doi.org/10.1248/yakushi1947.87.9_1028" @default.
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