Results 41 to 50 of about 10,233 (159)

Synthesis of Anthraquinones by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of a 1,2-Bis(propiolyl)benzene Derivative with Alkynes

Inorganics, 2019
[2 + 2 + 2] cycloaddition of a 1,2-bis(propiolyl)benzene derivative with terminal and internal alkynes takes place in the presence of [Ir(cod)Cl]2 (cod = 1,5-cyclooctadiene) combined with bis(diphenylphosphino)ethane (DPPE) to give anthraquinones in 42 ...
Takahiro Sawano, Yuko Toyoshima, Ryo Takeuchi   +2 more
doaj   +1 more source

Anthracene and Anthraquinone [PDF]

Nature, 1921
THE history of anthracene is long and vivid. Discovered amongst the products of coal-tar distillation in 1832, the hydrocarbon played a modest and somewhat commonplace part in the development of structural theory, suddenly blossoming into prominence in 1868, when it was found that alizarin, the twin monarch with indigo of natural colouring matters, is ...
openaire   +2 more sources

Plants-occurring Anthraquinones as Photosensitive Compounds for Photodynamic Method: A Critical Overview

Frontiers in Bioscience-Landmark
The review focuses on the recent knowledge on natural anthraquinones (AQs) of plant origin and their potential for application in an exclusive medicinal curative and palliative method named photodynamic therapy (PDT).
Vanya Mantareva, Diana Braikova, Irina Lazarova, Tsanislava Genova   +3 more
doaj   +1 more source

Estudo químico de duas plantas medicinais da amazônia: Philodendron scabrum k. Krause (araceae) e Vatairea guianensis aubl. (fabaceae) Chemical study of two Amazonian medicinal plants: Philodendron scabrum K. Krause (Araceae) and Vatairea guianensis Aubl. (Fabaceae)

Acta Amazonica, 2011
Este trabalho relata o estudo químico de duas plantas medicinais da Amazônia: Philodendron scabrum K. krause (Araceae) e Vatairea guianensis Aubl. (Fabaceae). As composições dos óleos essenciais dos cipós de P. scabrum e dos frutos de V.
Ivonei Ottobelli, Valdir Alves Facundo, Juliana Zuliani, Cleber Calado Luz, Henrique Otávio Braga Brasil, Júlio Sanches Linhares Teixeira Militão, Raimundo Braz-Filho   +6 more
doaj   +1 more source

Simultaneous Determination of Stilbenes, Flavones, Coumestans, Anthraquinones, and Chalcones in Ethanolic Extract of Pet-Sang-Kard Mixed Herbal Remedy Using HPLC-PDA Analysis

Molecules
The Pet-Sang-Kard mixed herbal remedy (PSKMHR) is a traditional Thai medicinal formulation used as an herbal supplement for the treatment of hemorrhoids.
Weerasak Samee, Wanna Eiamart, Sarin Tadtong, Chuda Chittasupho   +3 more
doaj   +1 more source

Simultaneous Analysis of Iridoid Glycosides and Anthraquinones in Morinda officinalis Using UPLC-QqQ-MS/MS and UPLC-Q/TOF-MSE

Molecules, 2018
Morinda officinalis is an important herbal medicine and functional food, and its main constituents include anthraquinone and iridoid glycosides. Quantification of the main compounds is a necessary step to understand the quality and therapeutic properties
Xiangsheng Zhao, Jianhe Wei, Meihua Yang
doaj   +1 more source

SPE-UHPLC-FLD Method for the Simultaneous Determination of Five Anthraquinones in Human Urine Using Mixed-Mode Bis(tetraoxacalix[2]arene[2]triazine) Modified Silica as Sorbent

Journal of Analytical Methods in Chemistry, 2017
The five anthraquinones compounds (including aloe-emodin, emodin, physcion, chrysophanol, and rhein) are regarded as the main effective ingredients in rhubarb (Dahuang in Chinese, one of the commonly used Chinese herbal medicines). In this work, a simple
Kai Hu, Yonghui Qiao, Zhifen Deng, Mingxia Wu, Wei Liu   +4 more
doaj   +1 more source

Discovery of antimicrobial anthraquinones with membrane-damaging effects from endophytic fungus Stagonosporopsis sp.

Mycology
Three new anthraquinone derivatives, stagonoquinones A−C (1−3), along with 11 known analogues, were isolated from the endophytic fungus Stagonosporopsis sp. YZHH-J-1 guided by a bioactivity-guided approach combined with HSQC-based DeepSAT analysis. Their
Yu Tu, Meiyan Bao, Ling Liu
doaj   +1 more source

PHOTOCHEMICAL TRANSFORMATIONS OF ANTHRAQUINONE AND ITS DERIVATIVES IN POLYDIMETHYLSILOXANE MATRIX

Вестник Кемеровского государственного университета, 2013
The photochemical reactions of anthraquinone and 2-ethylanthraquinone in the high molecular polydimethylsiloxane rubber SKT were studied by the method of luminescent spectroscopy.
S. V. Luzgarev, J. A. Sheveleva, V. J. Denisov, A. S. Luzgarev   +3 more
doaj  

Emodin and the Anthraquinone Scaffold: Therapeutic Promise and Strategies to Overcome Translational Barriers

Molecules
Emodin, a trihydroxy-methyl anthraquinone abundant in rhubarb, Polygonum species, and other medicinal plants, exemplifies the therapeutic potential and translational complexity of the broader anthraquinone scaffold.
Rositsa Mihaylova, Viktoria Elincheva, Rumyana Simeonova, Georgi Momekov   +3 more
doaj   +1 more source