Re-exploration of tetrahydro-β-carboline scaffold: Discovery of selective histone deacetylase 6 inhibitors with neurite outgrowth-promoting and neuroprotective activities
Using the Pictet–Spenglerreactions of tryptophan with aldehydes under acidic conditions at ambient temperature, diastereoisomers of 1,3-disubstituted-1,2,3,4-tetrahydro-β-carbolines could readily be furnished in short time (0.5–4 h) with good to excellent yields (50–98%). Though intrinsically slow in reaction rates, ketone reactions can be accelerated (from days to minutes) using microwaves in open
Convergent Synthesis of Complex Diketopiperazines Derived from Pipecolic Acid Scaffolds and Parallel Screening against GPCR Targets
作者:Sivaraman Dandapani、Ping Lan、Aaron B. Beeler、Scott Beischel、Athier Abbas、Bryan L. Roth、John A. Porco,、James S. Panek
DOI:10.1021/jo061758p
日期:2006.11.1
A convergent approach to highly functionalized diketopiperazines (DKPs) using enantioenriched pipecolic acids is described. Scandium triflate-catalyzed [4 + 2] aza-annulation was employed to produce stereochemically well-defined building blocks. A resin "catch and release" strategy was devised to convert annulation products to pipecolic acid monomers. Complex diketopiperazines were efficiently assembled utilizing one-pot cyclodimerization of pipecolic acids. Massively parallel screening of the complex DKPs against a panel of molecular targets identified novel ligands for a number of G-protein-coupled receptors (GPCRs).
<scp>l</scp>-Tryptophan Reacts with Naturally Occurring and Food-Occurring Phenolic Aldehydes To Give Phenolic Tetrahydro-β-carboline Alkaloids: Activity as Antioxidants and Free Radical Scavengers
作者:Tomas Herraiz、Juan Galisteo、Cristina Chamorro
DOI:10.1021/jf0210066
日期:2003.4.1
The reaction between the essential amino acid L-tryptophan and flavoring or naturally occurring phenyl and phenolic aldehydes was studied, and the alkaloidal reaction products were characterized by NMR and HPLC-MS. Benzaldehyde, vanillin, syringaldehyde, salicylaldehyde, and anisaldehyde condensed with L-tryptophan in aqueous-acidic media affording the corresponding phenolic tetrahydro-beta-carboline-3-carboxylic acid as two diastereoisomers, 1 S,3S-cis and 1R,3S-trans. With the exception of benzaldehyde, the rest of the aldehydes needed heating conditions (70 degreesC) to significantly form tetrahydro-beta-carbolines over time with the cyclization highly favored at low pH. This suggests a likely formation of these compounds under conditions that may occur in foods, food processing, or cooking. The new phenolic tetralhydro-beta-carboline alkaloids were assayed, for the first time, for their activity as free radical scavengers and antioxidants and showed good antioxidant properties with Trolox equivalent antioxidant capacity (TEAC) values much higher than those of ascorbic acid and the water soluble vitamin E analogue, Trolox, in the 2,2'-azinobis(3-ethylbenzothiazoline)-6-sulfonic acid (ABTS) assay.
Discovery of novel phosphatidylcholine-specific phospholipase C drug-like inhibitors as potential anticancer agents
作者:Chatchakorn Eurtivong、Lisa I. Pilkington、Michelle van Rensburg、Reuben M. White、Harpreet Kaur Brar、Shaun Rees、Emily K. Paulin、Chris Sun Xu、Nabangshu Sharma、Ivanhoe K.H. Leung、Euphemia Leung、David Barker、Jóhannes Reynisson
DOI:10.1016/j.ejmech.2019.111919
日期:2020.2
Phosphatidylcholine-specific phospholipase C (PC-PLC) is a promising target for new anticancer treatment. Herein, we report our work in the discovery of novel drug-like PC-PLC inhibitors. Virtual screening led to the identification of promising hits from four different structural series that contain the molecular scaffold of benzenesulphonamides (10), pyrido[3,4-b]indoles (22), morpholinobenzoic acid (84) and benzamidobenzoic acid (80). 164 structural analogues were tested to investigate the chemical space around the hit series and to generate preliminary structurally activity relationships (SAR). Two of the pyrido[3,4-b]indoles (22_10 and 22_15) had comparable or better potency as D609, an established but non-drug-like PC-PLC inhibitor. Furthermore, three morpholinobenzoic acids (84, 84_4 and 84_5) had superior potency than D609. Therefore, this study paves the way towards the development of drug-like PL-PLC inhibitors as potential anticancer agents. (C) 2019 Elsevier Masson SAS. All rights reserved.
[EN] COMPOSITIONS AND FORMULATIONS OF METHYLERTHRITOL PHOSPHATE PATHWAY INHIBITORS AND USES THEREOF<br/>[FR] COMPOSITIONS ET FORMULATIONS D'INHIBITEURS DE LA VOIE MÉTHYLERTHRITOL PHOSPHATE ET LEURS UTILISATIONS
申请人:VIRGINIA TECH INTELL PROP
公开号:WO2016069949A1
公开(公告)日:2016-05-06
Described herein are compounds and formulations thereof that can inhibit the methylerythritol phosphate pathway (MEP). Also described herein are methods of making and uses of the compounds and formulations thereof described herein.