Results 61 to 70 of about 16,959 (230)

Crystal structure of dibromomethoxyseselin (DBMS), a photobiologically active pyranocoumarin

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C15H14Br2O4 [systematic name: rac-(9S,10R)-3,9-dibromo-10-methoxy-8,8-dimethyl-9,10-dihydropyrano[2,3-h]chromen-2(8H)-one], is a pyranocoumarin derivative formed by the bromination of seselin, which is a naturally occurring angular ...
A. K. Bauri, Sabine Foro, A. F. M. M. Rahman   +2 more
doaj   +1 more source

Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker

Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.
Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch, Ankita Shastri, Thomas B. H. Schroeder, Amos Meeks, Shucong Li, Anna V. Shneidman, Michael Aizenberg, Joanna Aizenberg   +7 more
wiley   +1 more source

An Efficient and Rapid Synthetic Route to Biologically Interesting Pyranochalcone Natural Products

Molecules, 2007
An efficient and concise total synthesis of naturally occurring pyranochalcones was achieved from readily available 2,4-dihydroxyacetophenone and 2,4-dihydroxy-6- methoxyacetophenone. The key steps in the synthetic strategy were ethylenediamine diacetate-
Likai Xia, Xue Wang, Yong Rok Lee
doaj   +1 more source

Crystal Structure of Ethyl 2-Cyano-3-[(1-ethoxyethylidene) Amino]-5-(3-methoxyphenyl)-7-Methyl-5H-1,3-Thiazolo[3,2-A]pyrimidine-6-Carboxylate [PDF]

, 2015
In the title compound, C22H24N4O4S, the central pyrimidine ring adopts a sofa conformation with the ring-junction N atom displaced by 0.2358 (6) Å from the mean plane of the remaining ring atoms.
Krishnamurthy, M.S., Noor Shahina Begum, .   +1 more
core   +1 more source

Homoisoflavanone Delays Colorectal Cancer Progression via DNA Damage‐Induced Mitochondrial Apoptosis and Parthanatos‐Like Cell Death

Advanced Science, Volume 13, Issue 19, 2 April 2026.
Homoisoflavanone (HIF), a bioactive compound isolated from Polygonatum kingianum, selectively suppresses colorectal cancer progression by inducing DNA damage‐mediated mitochondrial apoptosis and parthanatos‐like cell death. HIF triggers mitochondrial dysfunction, including depolarized membrane potential, elevated ROS, and ATP depletion, while impairing
Hongjie Fan, Huzi Zhao, Pei Zhang, Pengfei Yu, Yunfei Ji, Gang Chen, Hongli Jin, Yanfang Liu, Jin Liu, Zhe‐Sheng Chen, Aiping Lyu, Xinmiao Liang, Yang Chen   +12 more
wiley   +1 more source

Photochromic spiropyran monolithic polymers: Molecular photo-controllable electroosmotic pumps for micro-fluidic devices [PDF]

, 2010
A novel photo-controllable micro-fluidic electroosmotic pump based on spiropyran monolithic polymers is presented here for the first time. Photochromic monolithic scaffolds have been synthesised within poly(tetrafluoroethylene) coated fused silica ...
Abele, Silvija, Benito-Lopez, Fernando, Byrne, Robert, Diamond, Dermot, Macka, Mirek, Nie, Fu-Qiang, Paull, Brett, Scarmagnani, Silvia, Slater, Conor, Walsh, Zarah   +9 more
core   +1 more source

Safety and Efficacy of Direct Oral Anticoagulants Versus Vitamin K Antagonists for Cerebrovascular Ischemic Outcomes in Non‐Valvular Atrial Fibrillation: A Systematic Review and Meta‐Analysis

Clinical Cardiology, Volume 49, Issue 4, April 2026.
Direct Oral Anticoagulants (DOACs) were associated With lower rates of cerebrovascular ischemic events and major bleeding compared With Vitamin K antagonists in non‐valvular atrial fibrillation, With similar mortality. These findings support DOACs as the preferred anticoagulant strategy for stroke prevention in contemporary clinical practice.
Anam Nasir, Naqash Anwar, Abdullah Bin Kamran, Ayesha Muhammad, Ali Haider, Muhammad Mubashar, Fatima Tariq, Mostafa Helou, Besher Shami   +8 more
wiley   +1 more source

Spiropyran modified PDMS micro-fluidic chip device for photonically controlled sensor array detection of metal ions [PDF]

, 2009
Micro‐fluidic chips are particularly attractive in biological and life sciences for analytical purposes because they provide a convenient small platform for rapid analysis and detection [1].
Benito-Lopez, Fernando, Diamond, Dermot, Macka, Mirek, Paull, Brett, Scarmagnani, Silvia, Walsh, Zarah   +5 more
core  

Antimicrobial Effect of Spices and Their Phytochemicals: A Novel Approach to Overcoming Antibiotic Resistance

MedComm, Volume 7, Issue 4, April 2026.
This graphical abstract shows the antibacterial potential of phytochemicals from 15 spices, showcasing key compounds, their extraction methods, and mechanisms of action. It highlights membrane disruption, ROS generation, enzyme inhibition, and biofilm prevention as core antibacterial pathways.
Hettiyahandi Binodh De Silva, Yanqi Dai, Shervanthi Homer‐Vanniasinkam, Mohan Edirisinghe   +3 more
wiley   +1 more source

2-(2,6-Dimethoxyphenyl)-5-hydroxy-7-methoxy-4H-1-benzopyran-4-one

Acta Crystallographica Section E, 2009
In the title compound, C18H16O6, the dimethoxyphenyl ring is rotated by 61.8 (1)° from the plane of the benzopyran system. The molecule is stabilized by an intramolecular O—H...O hydrogen bond.
R. Ravi Kumar, M. Krishnaiah, N. Jagadesh Kumar, D. Gunasekhar Reddy, V. G. Puranik   +4 more
doaj   +1 more source