• YAKHAK HOEJI
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• v.30 no.5
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• pp.238-244
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• 1986

As one of the starting materials, methylthioacetyl chloride(7) was synthesized in fair yield from mercaptoacetic acid via methyl methylthioacetate(5) prepared by alkylation employing N, N'-dicyclohexyl-O-methylisourea(4). Then 1-$\beta$-D-arabinofuranosylcytosine-5'-methylthioacetate (3) was prepared by esterification of ara-C with obtained methylthioacetyl chloride and tested for inhibitory activity on DNA synthesis in the growing primary hepatocytes and hepatoma strains($H_4$-II-E and HTC cells). In these in vitro cell lines, the inhibitory effect of ara-C-MTA(3) on DNA synthesis was similar to that of its parent ara-C but slightly lower.

• YAKHAK HOEJI
• /
• v.40 no.2
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• pp.131-134
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• 1996

3,4-Dimethoxyphenethyl amine(1) and 3,4-dimethoxybenzaldehyde were converted to compounds(4) through sucessive condensation and reduction reaction. Compound(4) was treated with methylthioacetyl chloride to give compound(5) then m-chloroperbenzoic acid(m-CPBA) treatment of compound(5) produced S-oxide(6). To obtain isoquinoline derivative(7),(8), compound(6) were treated with p-TsOH. Xylopinine(9) and it's derivatives(10) were produced by Bischler-Napieralski reaction.