Results 11 to 20 of about 14,107 (252)

Spirocyclic Acylphloroglucinol Derivatives from

Natural Product Communications, 2014
Five spirocyclic acylphloroglucinol derivatives ( 1–5 ) have been isolated from a hexanes extract of the leaves of Hypericum pyramidatum. Pyramidatones A-D ( 1–3, 5 ) are new, and chipericumin C ( 4 ) has been previously reported. The acylphloroglucinols
Rebecca Force, Shui Ling Chen, Emily Fortier, Emily Rowlands, Jean Heneks, David Rovnyak, Geneive E. Henry   +6 more
doaj   +1 more source

Dual function of active constituents from bark of Ficus racemosa L in wound healing

BMC Complementary and Alternative Medicine, 2018
Background Different parts including the latex of Ficus racemosa L. has been used as a medicine for wound healing in the Ayurveda and in the indigenous system of medicine in Sri Lanka.
Nisansala Swarnamali Bopage, G. M. Kamal Bandara Gunaherath, Kithsiri Hector Jayawardena, Sushila Chandrani Wijeyaratne, Ajita Mahendra Abeysekera, Seneviratne Somaratne   +5 more
doaj   +1 more source

Synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexane via cyclopropene cycloadditions to the stable azomethine ylide derived from Ruhemann's purple

Beilstein Journal of Organic Chemistry, 2022
A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov, Olesya V. Khoroshilova, Anna G. Larina, Vitali M. Boitsov, Alexander V. Stepakov   +4 more
doaj   +1 more source

Crystal structure of bis(3-bromomesityl)(quinolin-1-ium-8-yl)boron(III) tribromide

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C27H26.82BBr2.18N+·Br3−, is a cationic triarylborane isolated as its tribromide salt. The aryl substituents include a protonated 8-quinolyl group and two 3-bromomesityl groups.
Jungho Son, Sem Raj Tamang, James D. Hoefelmeyer   +2 more
doaj   +1 more source

Crystal structure of cis-7,8-dihydroxy-5,10,15,20-tetraphenylchlorin and its zinc(II)–ethylenediamine complex

Acta Crystallographica Section E: Crystallographic Communications, 2022
The title chlorin, 2PhH2, hydrogen-bonded to dimethylaminopyridine (DMAP), C44H32N4O2·C7H10N2, and its corresponding zinc(II) complex, 2PhZn, axially coordinated to ethylenediamine (EDA), [Zn(C44H30N4O2)]·C2H8N2, were isolated and crystallized by ...
Nivedita Chaudhri, Christian Brückner, Matthias Zeller   +2 more
doaj   +1 more source

Kigelia africana fruit: Constituents, bioactivity, and reflection on composition disparities

World Journal of Traditional Chinese Medicine, 2017
Objective: Kigelia africana, a tropical tree, which has long been used in African traditional medicine. The objective of the current study has been identifying the constituents of K. africana and verifying its utilities in traditional medicine. Materials
Ahmed Galal Osman, Zulfiqar Ali, Amar G Chittiboyina, Ikhlas A Khan   +3 more
doaj   +1 more source

[μ-1,3-Dioxo-1,3-bis(pyridin-2-yl)propane-2,2-diido-κ2N,C2:κ2C2,N′]bis[(1,3-diphenylpropane-1,3-dionato-κ2O,O′)palladium(II)](Pd—Pd)

Acta Crystallographica Section E, 2011
The title compound, [Pd2(C13H8N2O2)(C15H11O2)2], crystallized from a mixture of ethanol and n-hexanes. The structure is the first example of β-diketonate in a dianionic κ2C-coordination complex containing a PdII—PdII bond ...
Simona Maggini, Peter S. White
doaj   +1 more source

Isolating High Antimicrobial Ability Lignin From Bamboo Kraft Lignin by Organosolv Fractionation

Frontiers in Bioengineering and Biotechnology, 2021
Lignin from different biomasses possess biological antioxidation and antimicrobial activities, which depend on the number of functional groups and the molecular weight of lignin.
Jinyan Yun, Liao Wei, Wei Li, Duqiang Gong, Hongyu Qin, Xiujing Feng, Guojiang Li, Zhe Ling, Peng Wang, Baishuang Yin   +9 more
doaj   +1 more source

Diastereoselective Spiroannulation of Phenolic Substrates: Advances Towards the Asymmetric Formation of the Manumycin m-C7N Core Skeleton

Molecules, 2007
The asymmetric syntheses of two new spirolactones prepared in optically pure form from L-3-nitrotyrosine are described. The key step, an oxidative spiroannulation, was carried out on the optically active phenols 11a and 11b and afforded the new ...
Thomas W. Scully, Jolene S. Kwasnitza, Randy R. Spaetzel, Guy L. Plourde   +3 more
doaj   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni, Cecile Pagan, Antony Citterio‐Quentin, Isabelle Rouvet, Giulia Dingeo, Cyril Hanin, Claudine Laurent‐Levinson, Samia Pichard, Bénédicte Héron, Clément Gourguechon, Daniele Mandia, Jerome Guitton, Carole Lacout, Nicolas Schleinitz, Florient Potier, Olivier Flabeau, Elsa Besse‐Pinot, Foudil Lamari, Magali Pettazzoni, Yann Nadjar   +19 more
wiley   +1 more source