Results 41 to 50 of about 109,999 (323)

One-Pot Synthesis of Isoxazole-Fused Tricyclic Quinazoline Alkaloid Derivatives via Intramolecular Cycloaddition of Propargyl-Substituted Methyl Azaarenes under Metal-Free Conditions

Molecules, 2023
A practical method was developed for the convenient synthesis of isoxazole-fused tricyclic quinazoline alkaloids. This procedure accesses diverse isoxazole-fused tricyclic quinazoline alkaloids and their derivatives via intramolecular cycloaddition of ...
Zhuo Wang, Yuhan Zhao, Jiaxin Chen, Mengyao Chen, Xuehan Li, Ting Jiang, Fang Liu, Xi Yang, Yuanyuan Sun, Yanping Zhu   +9 more
doaj   +1 more source

On a conjecture about tricyclic graphs with maximal energy [PDF]

, 2014
For a given simple graph $G$, the energy of $G$, denoted by $\mathcal {E}(G)$, is defined as the sum of the absolute values of all eigenvalues of its adjacency matrix, which was defined by I. Gutman. The problem on determining the maximal energy tends to
Li, Jing, Li, Xueliang, Shi, Yongtang, Wei, Meiqin   +3 more
core   +1 more source

Contemporary management of pain in cirrhosis: Toward precision therapy for pain

Hepatology, EarlyView., 2022
Abstract Chronic pain is highly prevalent in patients with cirrhosis and is associated with poor health‐related quality of life and poor functional status. However, there is limited guidance on appropriate pain management in this population, and pharmacologic treatment can be harmful, leading to adverse outcomes, such as gastrointestinal bleeding ...
Alexis Holman, Neehar Parikh, Dan J. Clauw, David A. Williams, Elliot B. Tapper   +4 more
wiley   +1 more source

Two-step synthesis of chiral fused tricyclic scaffolds from phenols via desymmetrization on nickel

Nature Communications, 2017
Tricyclic furanic compounds with multiple chiral centers are found in a variety of natural products. Here, the authors show a highly enantioselective nickel-catalyzed procedure to access tricyclic oxygen-containing scaffolds with five contiguous chiral ...
Ravindra Kumar, Yoichi Hoshimoto, Eri Tamai, Masato Ohashi, Sensuke Ogoshi   +4 more
doaj   +1 more source

Design, synthesis and biological evaluation of 1,3-dihydroxyxanthone derivatives: Effective agents against acetylcholinesterase [PDF]

, 2017
The present work concerns the rational design and development of new inhibitors of acetylcholinesterase (AChE) based on the privileged xanthone scaffold.
Accordino, Sebastian Roberto, Appignanesi, Gustavo Adrian, Biscussi, Brunella, Gerbino, Darío César, Menéndez, Cintia Anabella, Murray, Ana Paula   +5 more
core   +1 more source

Clinical effectiveness and treatment satisfaction between two triple‐therapy regimens in treating neuropathic pain: A real‐world data

Ibrain, EarlyView., 2023
This study compared the clinical effectiveness and treatment satisfaction of Pregabalin and Gabapentin triple therapy for neuropathic pain in a real‐world setting. The primary outcome measured the reduction in mean Self‐Administered Leeds Assessment of Neuropathic Symptoms and Signs pain score value from baseline to 12 weeks posttreatment.
Nithya Raju, Samyuktha Villavan, Saranya Ravi, Roja Murugesan, Panneerselvam Theivendren, Vennila Jaganathan, Redlin Jani Rajan, Krupanidhi Karunanithi   +7 more
wiley   +1 more source

Severe Amitriptillin Intoxication Treated with Intravenous Lipid Emulsion

Journal of Pediatric Emergency and Intensive Care Medicine, 2021
Intoxication with tricyclic antidepressant drugs causes serious toxic findings even at low doses. Despite common use of the antidepressant drugs, there are no randomized controlled trials about treatments in tricyclic antidepressant drug intoxication ...
Ayyüce Ünlü, Mehmet Alakaya, Sadık Kaya, Ali Ertuğ Arslankoylu, Ali Korulmaz   +4 more
doaj   +1 more source

Neuroactive steroids in depression and anxiety disorders: Clinical studies [PDF]

, 2006
Certain neuroactive steroids modulate ligand-gated ion channels via non-genomic mechanisms. Especially 3 alpha-reduced pregnane steroids are potent positive allosteric modulators of the gamma-aminobutyric acid type A (GABA(A)) receptor.
Akwa Y, Baghai TC, Baker ER, Barrett-Connor E, Bicikova M, Bitran D, Bloch M, Brambilla F, Brambilla F, Brambilla F, Cornelius Schüle, Crawley JN, Dalton K, Daniela Eser, Dennerstein L, Dong E, Elena Romeo, Eser D, Evans RM, Fabian TJ, Freeman E, Freeman EW, Friess E, George MS, Goodyer IM, Guidotti A, Heydari B, Heydary B, Kita A, Koszycki D, Lawrie TA, Maayan R, Magill PJ, Majewska MD, Majewska MD, Majewska MD, Matsumoto K, Meieran SE, Melchior CL, Melchior CL, Mensah-Nyagan AG, Mienville JM, Monnet FP, Padberg F, Papadopoulos V, Paul SM, Purdy RH, Rainer Rupprecht, Reddy DS, Reddy DS, Reddy DS, Rodgers RJ, Romeo E, Rupprecht R, Rupprecht R, Schmidt PJ, Schule C, Schule C, Semeniuk T, Serra M, Serra M, Strohle A, Strohle A, Strohle A, Strous RD, Takebayashi M, Thomas C. Baghai, Tollefson GD, Trauger JW, Urani A, Uzunov DP, Uzunova V, Uzunova V, Uzunova V, Vanselow W, Wieland S, Wolkowitz OM, Wolkowitz OM, Wu FS, Zwanzger P   +79 more
core   +1 more source

Synthesis of a Highly Functionalized Triquinane: Studies Towards a Total Synthesis of Subergorgic Acid and Its Analogues

Molecules, 2000
Reaction of enone (11) with the bifunctional Grignard reagent (7) in the presence of copper(I) bromide – dimethyl sulfide, followed by intramolecular alkylation of the resultant chloroketone (15) gave the tricyclic ketone (12). The tricyclic ketone (
Veljko Dragojlovic
doaj   +1 more source

Crystal structure and Hirshfeld surface analysis of 4,5-dibromo-2-(4-methoxyphenyl)-2,3,4,4a,5,6,7,7a-octahydro-1H-4,6-epoxy-1H-cyclopenta[c]pyridin-1-one

Acta Crystallographica Section E: Crystallographic Communications, 2021
The molecule of the title compound, C15H15Br2NO3, comprises a fused tricyclic system consisting of two five-membered rings (cyclopentane and tetrahydrofuran) and one six-membered ring (tetrahydropyridinone).
Dmitriy F. Mertsalov, Nataliya S. Surina, Elena A. Sorokina, Sevim Türktekin Çelikesir, Mehmet Akkurt, Mikhail S. Grigoriev, Sixberth Mlowe   +6 more
doaj   +1 more source