Synthesis of resveratrol derivatives as new analgesic drugs through desensitization of the TRPA1 receptor
作者:Syuhei Nakao、Miyuki Mabuchi、Shenglan Wang、Yoko Kogure、Tadashi Shimizu、Koichi Noguchi、Akito Tanaka、Yi Dai
DOI:10.1016/j.bmcl.2017.05.025
日期:2017.7
A series of 31 resveratrol derivatives was designed, synthesized and evaluated for activation and inhibition of the TRPA1 channel. Most acted as activators and desensitizers of TRPA1 channels like resveratrol or allyl isothiocyanate (AITC). Compound 4z (HUHS029) exhibited higher inhibitory activity than resveratrol with an IC50 value of 16.1 μM. The activity of 4z on TRPA1 was confirmed in TRPA1-expressing
Bis(stilbenyl)squaraines — Novel pigments with extended conjugation
作者:Herbert Meier、Uta Dullweber
DOI:10.1016/0040-4039(95)02414-x
日期:1996.2
We report on the synthesis of a novel type of squaraines (11a-f, 17c) in which the conjugation of the chromophore is extended by stilbene units. These pigments exhibit absorption bands which have their maxima at the end on the Vis region and reach partly into the NIR.
Extension of the Squaraine Chromophore in Symmetrical Bis(stilbenyl)squaraines
作者:Herbert Meier、Uta Dullweber
DOI:10.1021/jo970284e
日期:1997.7.1
The bis(stilbenyl)squaraines 6d-j,d',j' represent a novel class of NIR pigments. Their synthesis was performed by the regioselective 2-fold condensation of highly nucleophilic 3,5-dihydroxystilbenes 4d-j,d'j' with squaric acid (5). Depending on the substitution with alkoxy groups, the absorption maxima range in solution from 680 to 735 nm. Reflexion measurements in the solid state reveal an exciton splitting with maxima at about 670 and 1000 nm.