20905-98-0Relevant articles and documents
New spiropyrans and two spirooxazines compounds with one or two thiophene nuclei. Applications to anticopying protection materials
Moustrou,Campredon,Samat,Garnier,Robillard,Guglielmetti
, p. 29 - 32 (1994)
The strategy of synthesis of new thiophene-substituted spiroheterocyclic photochromic structures, in spiropyran or spirooxazine series is described. The polymerization of thiophene entity give interesting semi-conductor systems. Such molecular materials prevent the reproduction of documents and could be useful in other applications such as fast optical switches.
Charge Trapping by Anionic Quinones Electrostatically Bound to a Highly Charged Cationic Quinone-Viologen Polymer or a Cationic Poly(3-viologen-thiophene)
Hable, Christopher T.,Crooks, Richard M.,Valentine, James R.,Giasson, Richard,Wrighton, Mark S.
, p. 6060 - 6065 (1993)
Charge associated with quinone reduction is trapped at low pH in systems composed of sulfonated anthraquinones electrostatically bound to a polymer derived from a monomer consisting of a quinone unit flanked by two viologen units.Each monomer repeat unit carriers 6 equiv of positive charge which can be charge compensated by monosulfonated anthraquinone to yield a quinone:viologen ratio of nearly 7:2.At low pH, electrostatic binding is persistent, and the amount of trapped charge is 90percent of the theoretical maximum.Some of the electrostatically bound quinone can be replaced with Fe(CN)6(3-) to allow mediated release of trapped charge via the Fe(CN)6(3-/4-) redox couple.I(-) is blocked from entering the polymer and thus does not mediate release of charge.Electrostatic binding of anionic quinones to a thiophene polymer with pendant viologen units has also demonstrated.This polymer system has the unique property of having built-in mediators for both the reduction (charge trapping) and oxidation (charge release) of the electrostatically bound anthraquinone.
Ulotaront: A TAAR1 Agonist for the Treatment of Schizophrenia
Heffernan, Michele L. R.,Herman, Lee W.,Brown, Scott,Jones, Philip G.,Shao, Liming,Hewitt, Michael C.,Campbell, John E.,Dedic, Nina,Hopkins, Seth C.,Koblan, Kenneth S.,Xie, Linghong
, p. 92 - 98 (2021/12/17)
Ulotaront (SEP-363856) is a trace-amine associated receptor 1 (TAAR1) agonist with 5-HT1A receptor agonist activity in Phase 3 clinical development, with FDA Breakthrough Therapy Designation, for the treatment of schizophrenia. TAAR1 is a G-protein-coupled receptor (GPCR) that is expressed in cortical, limbic, and midbrain monoaminergic regions. It is activated by endogenous trace amines, and is believed to play an important role in modulating dopaminergic, serotonergic, and glutamatergic circuitry. TAAR1 agonism data are reported herein for ulotaront and its analogues in comparison to endogenous TAAR1 agonists. In addition, a human TAAR1 homology model was built around ulotaront to identify key interactions and attempt to better understand the scaffold-specific TAAR1 agonism structure-activity relationships.
NOVEL PRENYLARENE COMPOUND AND USE THEREOF
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Paragraph 0046, (2013/03/26)
A compound represented by the general formula (C): (wherein R101 represents a substituted or unsubstituted aromatic heterocyclic group, R102, R103, R104 and R105 may be the same or different, and each
Enantioselective organo-SOMO cascade cycloadditions: A rapid approach to molecular complexity from simple aldehydes and olefins
Jui, Nathan T.,Lee, Esther C. Y.,MacMillan, David W. C.
supporting information; experimental part, p. 10015 - 10017 (2010/10/03)
A highly selective, radical-mediated (4 + 2) coupling reaction of aldehydes and conjugated olefins has been achieved through asymmetric SOMO-catalysis. A radical-polar crossover mechanism is proposed wherein olefin addition to a transient enamine radical cation and oxidation of the resulting radical furnishes a cation which is vulnerable to nucleophilic addition. A range of aromatic aldehydes are shown to couple with styrenes and dienes to provide cyclic products with high chemical efficiency, regioselectivity, and stereoselectivity.