Reaction of nonstabilized azomethine ylides with Mannich bases: an approach to 3-acylpyrrolidines
作者:Evgeniya V. Gorbunova、Evgeny M. Buev、Vladimir S. Moshkin、Vyacheslav Ya. Sosnovskikh
DOI:10.1016/j.mencom.2019.03.008
日期:2019.3
Mannich bases obtainedfrom cycloalkanones and methyl-ketones decompose on heating to give α,β-enones, which react in situ with nonstabilized azomethine ylides formed from spiro[anthracene-oxazolidines]. The final products, 3-acylpyrrolidines, were obtained in yields of 21–79% by heating the starting compounds in a microwave reactor in o-xylene at 210 °C for 45 min
Phosphonium ylides in the multicomponent synthesis of pyrrolidines
作者:Evgeny M. Buev、Polina A. Khardina、Vladimir S. Moshkin、Vyacheslav Y. Sosnovskikh
DOI:10.1016/j.tetlet.2022.154205
日期:2022.11
synthesis of pyrrolidines starting from phosphonium ylides, N-alkylglycines and carbonyl compounds was performed in 37–87% yields. This approach is based on a Wittig/Huisgen tandem reaction and simultaneous generation of the two reactive intermediates: alkene and azomethine ylide from the same carbonyl compound. Both stabilized and nonstabilized azomethine ylides were employed in this process allowing the construction
(EN) The present invention provides compounds represented by the formula (Ie) and the formula (If) wherein each symbol is as defined in the specification. According to the present invention, these compounds have a DGAT inhibitory activity and are useful for the prophylaxis, treatment or improvement of diseases or pathologies caused by high expression or high activation of DGAT.(FR) La présente invention concerne des composés représentés par la formule (Ie) ou la formule (If) dans lesquelles chaque symbole est tel que défini dans le mémoire descriptif. Selon la présente invention, ces composés ont une activité inhibitrice de la DGAT et ils sont utilisables pour la prophylaxie, le traitement ou l'amélioration de maladies ou de pathologies causées par la sur-expression ou la sur-activation de la DGAT.