نتایج جستجو برای: hydrazides

تعداد نتایج: 849  

Journal: :Bulletin of the Chemical Society of Japan 1962

Journal: :Molecules 2015
Wagdy M Eldehna Mohamed Fares Marwa M Abdel-Aziz Hatem A Abdel-Aziz

Three series of 6-aryl-2-methylnicotinohydrazides 4a-i, N'-arylidene-6-(4-bromophenyl)-2-methylnicotino hydrazides 7a-f, and N'-(un/substituted 2-oxoindolin-3-ylidene)-6-(4-fluorophenyl)-2-methylnicotinohydrazides 8a-c were synthesized and evaluated for their potential in vitro antimycobacterial activity against M. tuberculosis. The results showed that isatin hydrazides 8a-c are remarkably more...

Journal: :Organic & biomolecular chemistry 2016
Juanjuan Wang Danfeng Huang Ke-Hu Wang Xiansha Peng Yingpeng Su Yulai Hu Ying Fu

A convenient and efficient method for the constructions of 3-spirooxindole derivatives or 3,3'-disubstituted oxindoles has been developed from one-pot reactions of isatins, hydrazides or aromatic amines, 2-(bromomethyl)acrylic ester and tin powder in the presence of a catalytic amount of Brønsted or Lewis acid. The method avoids the use of toxic stannanes and allows easy operation. It is also p...

2008
Sharifah Mohamad Wan Md. Zin Wan Yunus Md. Jelas Haron Mohd Zaki

Fatty hydrazides (FH) have been successfully synthesized from palm oils by a one-step lipase catalyzed reaction. The synthesis was carried out by treating the oils with hydrazine hydrate at neutral pH using an immobilized lipase, Lipozyme as the catalyst. The percentages of conversion of RBD (refined, bleached and deodorized) palm oil (PO), RBD palm olein (POn), RBD palm stearin (PS) and RBD pa...

Journal: :Diseases of the chest 1953
M M ZISKIND E CALOVICH J JOFFKO J JACOBS

The iso-nicotinic acid hydrazides are valuable agents against tuberculosis exerting a powerful bacteriostatic action on the tubercle bacillus,’ diffusing readily into the cerebro spinal fluid,2 concentrating (as demonstrated by tissue cultures) effectively within macrophages3 and absorbed after oral administration without gastro-intestinal irritation. Such a combination of desirable attributes ...

Journal: :The Biochemical journal 1957
J DAWSON R P HULLIN M WALKER

PAGE Inhibition of the alanine-oxoglutaric acid transaminase of pig-heart muscle by cyclic hydrazides.

Journal: :Applied and environmental microbiology 2010
Claude Saint-Ruf Corinne Cordier Jérome Mégret Ivan Matic

We have developed a new method for accurate quantification of dead microbial cells. This technique employs the simultaneous use of fluorescent hydrazides and nucleic acid dyes. Fluorescent hydrazides allow detection of cells that cannot be detected with currently used high-affinity nucleic acid dyes. This is particularly important for nongrowing bacterial populations and for multicellular commu...

Journal: :Journal of lipid research 1983
V P Agrawal

Treatment of O-acyl lipids with hydrazine degrades them to hydrazides of the constituent fatty acids. These hydrazides react with acetone to yield less polar and more volatile N'-isopropylidenealkanohydrazides, R-CO-NH-N = C(CH3)2, which strongly absorb ultraviolet light and are amenable to thin-layer and gas-liquid chromatographic analyses. In presence of cyclopentene, reduction of double bond...

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