Formation of Chromene Analogs of Homophthalates: Investigation of Condensation Products Derived from 2-Hydroxybenzaldehydes and Diethyl 2-Pentenedicarboxylates
作者:Seetharamaiyer Padmanabhan、Kaustubh V. Gavaskar、David J. Triggle
DOI:10.1080/00397919608004618
日期:1996.8
Abstract Condensation of substituted 2-hydroxybenzaldehyde derivatives (1a-1) with diethyl 2-pentenedicarboxylate (2) in the presence of piperidine gave coumarin and / or chromene derivatives. Attempted reaction of 4-N,N-diethylamino-2-hydroxybenzaldehyde (1a) and 2-hydroxy-3-nitrobenzaldehyde (1i) with diethyl 3-phenyl-2-pentenedicarboxylate (5) led to formation of no coumarin or chromene derivative
Ratiometric fluorescence probes based on a Michael acceptor type of coumarin and their application for the multichannel imaging of in vivo glutathione
作者:Gun-Joong Kim、Doo-Ha Yoon、Mi-Yeon Yun、Hyockman Kwon、Hyun-Joon Ha、Hae-Jo Kim
DOI:10.1039/c4ra01933d
日期:——
A series of Michael acceptors based on a coumarin moiety, were developed as fluorescent probes for ratiometric detection of in vivo glutathione. The α,β-unsaturated Michael acceptors were transformed into non-conjugated molecules through the Michael addition of biothiols. The resulting UV-vis and fluorescence spectra of the probes revealed characteristic ratiometric responses, which were successfully applied for the multichannel imaging of in vivo glutathione.