A Facile, Sequential Multicomponent Approach to N-Aminoamidinothioureas—Versatile Synthons to Bioactive Heterocycles
作者:K. G. Sreejalekshmi
DOI:10.1080/10426500903329237
日期:2010.8.25
convenient one-potsynthesis of N-aminoamidinothioureas is reported. The improved synthetic strategy involves the selective blocking of amino functionality in aminoguanidine by Schiffbase formation with carbonyl compounds to generate corresponding N-(alkylidene/arylidene)aminoguanidines and their subsequent in situ condensation with isothiocyanate. The structural motif incorporates three points for
One-pot four-component synthesis of 4-hydrazinothiazoles: novel scaffolds for drug discovery
作者:Sarah Titus、Kumaran G. Sreejalekshmi
DOI:10.1016/j.tetlet.2014.08.033
日期:2014.10
One pot ring synthesis of novel 4-hydrazinothiazoles through sequential four-component route employing carbonyl compounds, aminoguanidine, isothiocyanates, and α-haloketones was accomplished under mild reaction conditions. Base-assisted eliminative aromatization in the [4+1] ring synthesis shed light on interesting leaving group propensities of amine versus hydrazine resulting in the exclusive formation
Synthesis, characterization, and anticancer evaluation of novel 4‐hydrazinothiazole analogs
作者:Shorook Yasser Break、Aisha Hossan、Asmaa Farouk
DOI:10.1002/bio.4574
日期:2023.11
Single-step synthesis of novel 4-hydrazinothiazole derivatives 6a–e was achieved under mild conditions using the sequential four-components method involving isothiocyanate, aminoguanidine, carbonyl adduct, and α-haloketone derivatives. Deprotection of these hydrazinothiazoles was influenced by acylation, providing a novel group of diacylated molecular structures with a broader scope for the design