منابع مشابه
Acylation of hydrazides with acetic acid and formic acid.
In peptide synthesis, hydrazides are important intermediates for the azide coupling method. A hydrazide is converted to the corresponding azide in the presence of an acid and a nitrite. When acetic acid (or formic acid) is used as the acid, partial acetylation (or formylation) of the hydrazide occurs as a side reaction. Formylation of the hydrazide is much faster than acetylation. Removal of th...
متن کاملDesign, synthesis and antitubercular activity of certain nicotinic Acid hydrazides.
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...
متن کاملMicrowave Irradiation Promoted Reactions of Orthoesters with Carboxylic Acid Hydrazides. Preparation of 1,3,4-Oxadiazoles
Rapid and highly efficient synthesis of 2- or 2,5-substituted 1,3,4-oxadiazoles by the condensation of aryl carboxylic acid hydrazides and orthoesters can be achieved under microwave irradiation using an unmodified commercial over in unsealed vessels.
متن کاملInhibition of the alanine-alpha-oxoglutaric acid transaminase of pig-heart muscle by cyclic hydrazides.
8oNicotinic acid hydrazide (isoniazid) has antituberculous activity both in vivo and in vitro (Fox, 1951). In man its principal toxic effect, peripheral neuritis (Biehl & Vilter, 1954; Oestreicher, Dressler & Middlebrook, 1954), can be prevented by the concurrent administration of vitamin B. (pyridoxine) (Biehl & Vilter, 1954; Biehl & Nimitz, 1954). It is of interest to discover whether the spe...
متن کاملAcyl hydrazides as peptoid sub-monomers.
The use of acyl hydrazides as peptoid sub-monomers is investigated. We demonstrate here that azapeptoids derived entirely from acyl hydrazides can be made conveniently and efficiently using standard peptoid sub-monomer chemistry. Structural studies reveal that the main chain amide bond in these molecules predominantly adopts a trans conformation. A high-quality one bead one compound library of ...
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ژورنال
عنوان ژورنال: Synlett
سال: 2014
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-0034-1378211