New N-Mannich bases obtained from isatin and piperazine derivatives: the synthesis and evaluation of antimicrobial activity
作者:Andrei V. Bogdanov、Al’bina M. Vazykhova、Nadezhda R. Khasiyatullina、Dmitry B. Krivolapov、Alexey B. Dobrynin、Alexandra D. Voloshina、Vladimir F. Mironov
DOI:10.1007/s10593-016-1826-6
日期:2016.1
A Mannich reaction of isatin with monosubstituted piperazines in the presence of aqueous formaldehyde was used to synthesize new, as well as two previously described derivatives of 1-piperazinomethylisatins, which were further converted to isoindigo derivatives. The antimicrobial activity of the obtained heterocycles was evaluated.
Effect of Structure of 1-Substituted Isatins on Direction of Their Reactions with Some Acetohydrazide Ammonium Derivatives
作者:A. V. Bogdanov、A. D. Voloshina、A. S. Sapunova、N. V. Kulik、V. F. Mironov
DOI:10.1134/s1070363220090029
日期:2020.9
Abstract The reaction of 1-acylisatins with Girard’s reagent T proceeds with elimination of the acyl substituent and the formation of isatin-3-hydrazone with a quaternary nitrogen atom in the side chain. Depending on the structure of the substituent in position 1, 1-(aminomethyl)isatins reacted with the Girard’s reagent T to form hydrazones either with the elimination of the aminomethyl substituent