Synthesis and biological activity of some new pyrazoline and pyrimidine derivatives
摘要:
New series of pyrazoline 3-aryl-4,5-dihydro-1H-pyrazole-1-carbaldehydes (4-6), (aryl-4,5-dihydro-1H-pyrazol-1-yl) ethanones (9-11) and 3-aryl-4,5-dihydro-1H-pyrazoles (24 and 25) were synthesized by reacting chalcones (1-3) with hydrazine hydrate in either formic acid, acetic acid or ethanol, respectively. Also, new 6-arylpyrimidin-2-amine derivatives (32-34) were synthesized from the same chalcones. The structures of the newly synthesized compounds were established on the basis of IR, H-1 NMR, C-13 NMR, mass spectral data and elemental analyses. The compounds were evaluated for their antibacterial and antifungal activities. Three heterocycles showed relevant activity against C. albicans and some compounds also showed activity against E. coli.
Synthesis and biological activity of some new pyrazoline and pyrimidine derivatives
摘要:
New series of pyrazoline 3-aryl-4,5-dihydro-1H-pyrazole-1-carbaldehydes (4-6), (aryl-4,5-dihydro-1H-pyrazol-1-yl) ethanones (9-11) and 3-aryl-4,5-dihydro-1H-pyrazoles (24 and 25) were synthesized by reacting chalcones (1-3) with hydrazine hydrate in either formic acid, acetic acid or ethanol, respectively. Also, new 6-arylpyrimidin-2-amine derivatives (32-34) were synthesized from the same chalcones. The structures of the newly synthesized compounds were established on the basis of IR, H-1 NMR, C-13 NMR, mass spectral data and elemental analyses. The compounds were evaluated for their antibacterial and antifungal activities. Three heterocycles showed relevant activity against C. albicans and some compounds also showed activity against E. coli.
Synthesis of 1-substituted 3,5-diaryl-2-pyrazolines by the reaction of α,β-unsaturated ketones with hydrazines
作者:Albert Lévai、József Jekö
DOI:10.1002/jhet.5570430117
日期:2006.1
1-Acetyl-, 1-propionyl- and 1-phenyl-3,5-diaryl-2-pyrazolines have been synthesized by the reaction of the appropriate α,β-unsaturatedketones with hydrazine or phenylhydrazine in hot acetic acid or propionic acid. Structures of all new 2-pyrazolines 16-40 have been elucidated by microanalyses, 1H and 13C nmr spectroscopies.
通过适当的α,β-不饱和酮与肼或苯肼在热乙酸或丙酸中的反应,已经合成了1-乙酰基,1-丙酰基-和1-苯基-3,5-二芳基-2-吡唑啉。所有新的2-吡唑啉16-40的结构已通过微量分析,1 H和13 C nmr光谱学得以阐明。
Synthesis and biological activity of some new pyrazoline and pyrimidine derivatives
作者:Seham Y Hassan
DOI:10.1590/s0103-50532011000700014
日期:——
New series of pyrazoline 3-aryl-4,5-dihydro-1H-pyrazole-1-carbaldehydes (4-6), (aryl-4,5-dihydro-1H-pyrazol-1-yl) ethanones (9-11) and 3-aryl-4,5-dihydro-1H-pyrazoles (24 and 25) were synthesized by reacting chalcones (1-3) with hydrazine hydrate in either formic acid, acetic acid or ethanol, respectively. Also, new 6-arylpyrimidin-2-amine derivatives (32-34) were synthesized from the same chalcones. The structures of the newly synthesized compounds were established on the basis of IR, H-1 NMR, C-13 NMR, mass spectral data and elemental analyses. The compounds were evaluated for their antibacterial and antifungal activities. Three heterocycles showed relevant activity against C. albicans and some compounds also showed activity against E. coli.