Synthesis and biological studies of a novel series of 4-(4-(1H-imidazol-1-yl)phenyl)-6-arylpyrimidin-2-amines
摘要:
A novel series of eleven 4-(4-(1H-imidazol-1-yl)phenyl)-6-arylpyrimidin-2-amines has been prepared from synthesized 3-[4-(1H-imidazol-1-yl) phenyl]prop-2-en-1-ones and evaluated for phosphodiesterase (PDE) inhibition and antimicrobial activities. N-arylation of imidazole with 4-fluorobenzaldehyde using hexadecyltrimethylammonium bromide as catalyst gave 4-(1H-imidazol-1-yl) benzaldehyde which on treatment with substituted acetophenones yielded corresponding chalcones (1a-1k). Each chalcone on further reaction with guanidine hydrochloride resulted in title compounds (2a-2k). Pyrimidines thus synthesized were subjected to biological studies. Some compounds showed marked activities in PDE inhibition and anti-bacterial and anti-fungal bioassays.
A pyridyl derivative with four stereo centers has been prepared by an efficient synthetic method based on a solvent-free reaction. The structure was characterized by elemental analyses, IR, 1H NMR, mass spectra and single crystal X-ray diffraction. The crystal structure shows that the cyclohexyl group is a chair conformation and three intramolecular hydrogen bonds generate the trimer.
Synthesis and biological studies of a novel series of 4-(4-(1H-imidazol-1-yl)phenyl)-6-arylpyrimidin-2-amines
作者:Mujahid Hussain Bukhari、Matloob Ahmad、Tanvir Hussain、Syed Umar、Naveed Ahmad
DOI:10.1007/s00044-013-0523-6
日期:2013.11
A novel series of eleven 4-(4-(1H-imidazol-1-yl)phenyl)-6-arylpyrimidin-2-amines has been prepared from synthesized 3-[4-(1H-imidazol-1-yl) phenyl]prop-2-en-1-ones and evaluated for phosphodiesterase (PDE) inhibition and antimicrobial activities. N-arylation of imidazole with 4-fluorobenzaldehyde using hexadecyltrimethylammonium bromide as catalyst gave 4-(1H-imidazol-1-yl) benzaldehyde which on treatment with substituted acetophenones yielded corresponding chalcones (1a-1k). Each chalcone on further reaction with guanidine hydrochloride resulted in title compounds (2a-2k). Pyrimidines thus synthesized were subjected to biological studies. Some compounds showed marked activities in PDE inhibition and anti-bacterial and anti-fungal bioassays.
Anti-oxidant, anti-fungal and anti-leishmanial activities of novel 3-[4-(1H-imidazol-1-yl) phenyl]prop-2-en-1-ones
A series of new 3-[4-(1H-imidazol-1-yl) phenyl]prop-2-en-1-ones were synthesized by the condensation of various acetophenones with 4-(1H-imidazol-1-yl) benzaldehyde which was itself prepared by the N-arylation of imidazole using hexadecyltrimethylammonium bromide as catalyst for the first time. All the synthesized compounds were subjected to preliminary evaluation for their anti-leishmanial, anti-oxidant and anti-fungal activities. Few of the synthesized compounds showed significant activities. (C) 2009 Elsevier Masson SAS. All rights reserved.
Synthesis and evaluation of 2,4,6-trisubstituted pyrimidine derivatives as novel antileishmanial agents
作者:S. K. Patle、N. Kawathekar、M. Zaveri、P. Kamaria
DOI:10.1007/s00044-012-0167-y
日期:2013.4
A series of new 2,4,6-trisubstituted pyrimidine derivatives 8(a-j) were synthesized by reacting substituted chalcones containing imidazole 6(a-d) and benzimidazole 7(a-f) with guanidine hydrochloride in the presence of strong base. Substituted chalcones were synthesized by reacting 4-(1H-imidazol-1-yl)benzaldehyde or 4-(1H-benzo[d]imidazol-1-yl)benzaldehyde with different substituted acetophenones in the presence of 40 % NaOH in methanol. The synthesized compounds were confirmed by IR, (HNMR)-H-1, and mass spectral data and screened for antileishmanial activity. Antileishmanial activity was performed against Leishmania donovani parasite, and percentage lysis inhibition were calculated by meglumine antimoliate taking a positive control and chloroform (0.1 % CHCl3) treatment served as control. Among all the compounds, 8h and 8j exhibited 50-57 % inhibition against promastigotes, thus providing new structural lead for antileishmanials.