Catalytic Asymmetric N-Alkylation of Indoles and Carbazoles through 1,6-Conjugate Addition of Aza-<i>para</i>-quinone Methides
作者:Min Chen、Jianwei Sun
DOI:10.1002/anie.201701947
日期:2017.4.10
organocatalytic strategy in which in situ generated aza‐para‐quinonemethides are employed as the alkylating reagent. With the proper choice of a chiral phosphoric acid and an N‐protective group, the intermolecular C−N bond formation with various indole and carbazole nucleophiles proceeded efficiently under mild conditions with excellent enantioselectivity and functional‐group compatibility. Control experiments
Cardiotonic Compounds With Inhibitory Activity Against Beta-Adrenergic Receptors And Phosphodiesterase
申请人:Taylor Malcolm George
公开号:US20080255134A1
公开(公告)日:2008-10-16
The present invention provides compounds of formula (I) possessing inhibitory activity against β adrenergic receptors and phosphodiesterase (PDE), including type 3 phosphodiesterase (PDE-3). The present invention further provides pharmaceutical compositions comprising such compounds, methods of preparing such compounds, and methods of using such compounds for regulating calcium homeostasis, for treating a disease, disorder or condition in which disregulation of calcium homeostasis is implicated and for treating cardiovascular disease, stroke, epilepsy, an ophthalmic disorder or migraine.
[EN] CARDIOTONIC COMPOUNDS WITH INHIBITORY ACTIVITY AGAINST BETA-ADRENERGIC RECEPTORS AND PHOSPHODIESTERASE<br/>[FR] COMPOSES CARDIOTONIQUES DOTES D'UNE ACTIVITE INHIBITRICE DIRIGEE CONTRE LES RECEPTEURS BETA-ADRENERGIQUES ET LA PHOSPHODIESTERASE
申请人:ARTESIAN THERAPEUTICS INC
公开号:WO2006060122A3
公开(公告)日:2007-03-22
Macroscopic Wires from Fluorophore-Quencher Dyads with Long-Lived Blue Emission
We report the formation of macroscopic wires up to centimeters in length from a series of structurally flexible, covalently tethered small-molecular fluorophore-quencher dyads (FQDs, average MW = 425 Da), comprised of carbazole, melatonin, and cyanobenzoate moieties. These FQDs are nonemissive in organic solutions but become moderately to highly luminescent (Phi(F) = 0.037-0.39) upon formation of wires with emission maxima in the blue region (446-483 nm). The blue photoluminescence (PL) is ascribed to a combination of singlet charge transfer, localized triplet state, and possibly delayed fluorescence emissions with intrinsic luminescence lifetimes ranging from 0.228 to 21333 mu s, based on luminescence, transient absorption measurements, X-ray diffraction, and calculations.