2-Heteroarylidene-1-indanone derivatives as inhibitors of monoamine oxidase
作者:Magdalena S. Nel、Anél Petzer、Jacobus P. Petzer、Lesetja J. Legoabe
DOI:10.1016/j.bioorg.2016.09.004
日期:2016.12
In the present study a series of fifteen 2-heteroarylidene-1-indanone derivatives were synthesised and evaluated as inhibitors of recombinant human monoamineoxidase (MAO) A and B. These compounds are structurally related to series of heterocyclic chalcone derivatives which have previously been shown to act as MAO-B specific inhibitors. The results document that the 2-heteroarylidene-1-indanones are
The structures of pyrrolylmethylidene derivatives of 2,3-dihydro-1H-inden-1-one (3), 3,4-dihydro-naphthalen-1(2H)-one (4), and cycloalkanones (5-7) were studied for the first time in the solid state and solution by NMR, IR, and UV spectroscopies supported by DFT quantum mechanical calculations. It was shown that all studied compounds except cycloheptanone derivative 7 both in crystal and in solution exist in the form of dimers where single E or E,E configuration with respect to the exocyclic C=C bond is stabilized by intermolecular hydrogen bonds N-H center dot center dot center dot O=C. UV irradiation at a wavelength of 365 nm of MeCN or DMSO solutions of 3-6 results, depending on the exposition time and solvent, partial to complete isomerization to the Z or Z,E isomers (in the case of 6, also the Z,Z isomer). The NMR and IR spectroscopy data show the existence of a strong intramolecular hydrogen bond N-H center dot center dot center dot O=C in the Z moieties of isomerized compounds. The studied compounds are protonated by trifluoroacetic acid at the carbonyl oxygen, in spite of the reverse order of basicity and nucleophilicity of the carbonyl group and the pyrrole ring. Investigation of the behavior of compound 6 with respect to acetate and fluoride anions allows one to consider it as a potential fluoride sensor.
Superfast synthesis, antibacterial and antifungal studies of halo-aryl and heterocyclic tagged 2,3-dihydro-1H-inden-1-one candidates
作者:Rahul A. Shinde、Vishnu A. Adole、Bapu S. Jagdale、Thansing B. Pawar
DOI:10.1007/s00706-021-02772-0
日期:2021.6
activities against two Gram-positive (Staphylococcus aureus and Bacillus subtilis) and two Gram-negative bacteria (Escherichia coli and Proteus vulgaris), and also two fungal agents (Aspergillus niger and Candida albicans). Most of the compounds were found to exert potentantibacterial action with broad-spectrum antibacterial activity. Likewise, few compounds were revealed to have potent antifungal properties
我们描述了卤代芳基和杂环标记的2,3-二氢-1 H-茚满一酮衍生物的成功合成,以及它们的抗菌和抗真菌特性。通过研磨,搅拌和超声辐照方法合成了来自2,3-二氢-1 H-茚基-1-一的总共15种衍生物。这些发现表明,超声技术在时间和合成性能方面越来越令人满意。测试了合成的化合物对两种革兰氏阳性菌(金黄色葡萄球菌和枯草芽孢杆菌)和两种革兰氏阴性菌(大肠杆菌和寻常变形杆菌)以及两种真菌剂的抗菌活性。黑曲霉和白色念珠菌)。发现大多数化合物都具有强大的抗菌作用,并具有广谱抗菌活性。同样,几乎没有化合物显示出对黑曲霉和白色念珠菌具有有效的抗真菌特性。通过FT-IR,1 H NMR,13 C NMR和HRMS光谱技术对合成的化合物进行表征。 图形摘要
Iron-catalyzed chemoselective hydride transfer reactions
A Diaminocyclopentadienone iron tricarbonyl complex has been applied in chemoselective hydrogen transfer reductions. This bifunctional iron complex demonstrated a broad applicability in mild conditions in various reactions, such as reduction of aldehydes over ketones, reductive alkylation of various functionalized amines with functionalized aldehydes and reduction of α,β-unsaturated ketones into the