نتایج جستجو برای: 4 dihydropyridine
تعداد نتایج: 1305499 فیلتر نتایج به سال:
Some new Mannich Bases of 1, 4 Dihydropyridine derivatives were synthesised by reaction of 1, 4 Dihydropyridine derivatives formaldehyde (HCHO) & secondary amines (e.g. morpholine, 1-methyl piperazine) in 1:1 ratio under acidic condition in presence of trace HCl. The compounds synthesised were identified by UV, 1H NMR, and FT-IR spectroscopic techniques. All compounds studied in this work were ...
Diisopropyl 1-(4-methoxyphenyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate
Hantzsch condensation of two equivalents of methyl-3-aminocrotonate with (m- and p)-methoxybenzaldehyde afforded the expected products 2,6-dimethyl-3,5-dimethoxycarbonyl-4-(m-methoxyphenyl)-1,4-dihydropyridine and 2,6-dimethyl-3,5-dimethoxycarbonyl-4-(p-methoxyphenyl)-1,4-dihydropyridine, whereas o-methoxy-benzaldehyde produced mainly 1-amino-2-methoxycarbonyl-3,5-bis(o-methoxy-phenyl)-4-oxa-cy...
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