bioinformatics analysis demonstrated that indoleamine2,3-dioxygenase1 (IDO1) and tryptophan 2,3-dioxygenase (TDO) are potential targets for the development of antidepressants. A series of 1-(hetero)aryl-β-carboline derivatives were designed, synthesized, and evaluated as novel IDO1/TDO dual inhibitors. Among them, compound 28 displayed potent inhibition of both IDO1 (IC50 = 3.53 μM) and TDO (IC50 = 1
Ru(II)-Catalyzed Regioselective Hydroxymethylation of β-Carbolines and Isoquinolines via C–H Functionalization: Probing the Mechanism by Online ESI-MS/MS Screening
作者:Ramya Tokala、Darshana Bora、Sravani Sana、Fabiane M. Nachtigall、Leonardo S. Santos、Nagula Shankaraiah
DOI:10.1021/acs.joc.9b00454
日期:2019.5.3
A Ru(II)-catalyzed regioselective C-H activation toward hydroxymethylation of beta-carbolines and isoquinolines as effective directing groups has been developed, and the mechanism was probed by using online electrospray ionization-tandem mass spectrometry. The introduction of the hydroxymethyl group in the biologically relevant molecules routed via C-H functionalization remains an important task. Gratifyingly, this protocol draws attention to the regioselective formation of monohydroxymethylated beta-carboline/isoquinoline products exclusively.
β-Carboline directed regioselective hydroxylation by employing Cu(OAc)<sub>2</sub> and mechanistic investigation by ESI-MS
This protocol demonstrates microwave-irradiated monohydroxylation on different heterocycles via C–H functionalization which leads into the development of biologically relevant molecules.
An Alternative to Pictet-Gams Reaction Triggered by Hendrickson Reagent: Isoquinolines and β-Carbolines from Amides
作者:Shaozhong Wang、Mengde Wu
DOI:10.1055/s-0029-1217138
日期:2010.2
The Hendrickson reagent derived from triflic anhydride and triphenylphosphine oxide exhibited high oxophilicity and induced the intramolecular cyclization of β-arylethylamides perfectly. Thus, a one-pot protocol to access isoquinoline and β-carboline was developed involving cyclization followed by oxidative aromatization. Hendrickson reagent - isoquinoline - β-carboline - β-arylethylamide - manganese(IV)