5-Methyl-3,3-bis(4-methylpiperazin-1-yl)-1-[2-(4-methylpiperazin-1-yl)ethyl]indolin-2-one

Abstract

In the title compound, C26H43N7O, each piperazine ring adopts a chair conformation. Two 1-methylpiperazine rings bond to one Csp3 of the pyrrole ring via the piperazine N atoms, while the third one links to the N atom of the indolin-2-one unit through a flexible ethyl group with an almost syn conformation. In the crystal, molecules are connected through methylene–carbonyl C—H...O interactions into an infinite chain along the c axis. The almost parallel arrays are stacked, forming a three-dimensional framework.