Synthesis and Characterization of Novel Five-Membered Heterocycles and Their Activity against Candida Yeasts
摘要:
Some new tetrazole derivatives were prepared by the reaction between the prepared azomethine compounds I-6-I-10 with sodium azide in anhydrous tetrahydrofuran (THF) with a few drops of distilled water and under reflux conditions. Azomethine compounds were prepared by thermal condensation reactions of aromatic aldehydes with primary aromatic amines. The prepared compounds (tetrazole derivatives) were screened for their antibacterial activity (by disc diffusion method). Compound I-6 is the most active derivative that has recorded a significantly (p<0.01) stronger influence to inhibit the growth of Candida zeylanoides with an average zone of inhibition of 26.0 mm. Derivatives I-7 and I-9 showed the lowest zone of inhibition of 8.0 mm against Candida zeylanoides. This study may be helpful in designing more potential anticandidal agents for therapeutic use in the future.
A new series of diarylhydrazones derived from 2,4-dinitrophenylhydrazine were synthesized via condensation with aromatic aldehydes whose structures have been determined by mass spectrometry, infrared spectroscopy, and nuclear magnetic resonance spectra. Yields were 50-99%. All compounds were screened in vitro for their antifungal activity. Preliminary results indicated that compounds 3g and 3h exhibited promising antifungal potency. Understanding of the structure of these compounds establishes a preliminary structure-activity relationship to form the basis of further investigation.
Hearn, Michael J.; Sy, Karen Grace, Bulletin des Societes Chimiques Belges, 1989, vol. 98, # 5, p. 339 - 342
作者:Hearn, Michael J.、Sy, Karen Grace
DOI:——
日期:——
HEARN, MICHAEL J.;SY, KAREN GRACE, BULL. SOC. CHIM. BELG., 98,(1989) N, C. 339-342
作者:HEARN, MICHAEL J.、SY, KAREN GRACE
DOI:——
日期:——
An Efficient Partial Reduction of α,β-Unsaturated Esters Using DIBAL-H in Flow
作者:Masahito Yoshida、Hiroyuki Otaka、Takayuki Doi
DOI:10.1002/ejoc.201402675
日期:2014.9
The partialreduction of α,β-unsaturatedesters and benzoate derivatives to form the corresponding aldehydes was achieved using a flow reactor system within 1 s at a high flow rate (18 mL min–1) under cryogenic conditions (–97 °C). Commercially available diisobutylaluminium hydride (DIBAL-H) was used as the reductant. The desired enals and benzaldehyde derivatives, except for 4-methoxycinnamate and
Synthesis and Characterization of Novel Five-Membered Heterocycles and Their Activity against Candida Yeasts
作者:Hiba Maher Tawfeeq、Rasim Farraj Muslim、Obaid Hasan Abid、Mustafa Nadhim Owaid
DOI:10.17344/acsi.2018.4719
日期:——
Some new tetrazole derivatives were prepared by the reaction between the prepared azomethine compounds I-6-I-10 with sodium azide in anhydrous tetrahydrofuran (THF) with a few drops of distilled water and under reflux conditions. Azomethine compounds were prepared by thermal condensation reactions of aromatic aldehydes with primary aromatic amines. The prepared compounds (tetrazole derivatives) were screened for their antibacterial activity (by disc diffusion method). Compound I-6 is the most active derivative that has recorded a significantly (p<0.01) stronger influence to inhibit the growth of Candida zeylanoides with an average zone of inhibition of 26.0 mm. Derivatives I-7 and I-9 showed the lowest zone of inhibition of 8.0 mm against Candida zeylanoides. This study may be helpful in designing more potential anticandidal agents for therapeutic use in the future.