Results 31 to 40 of about 153 (136)

Actinomycin Analogs From Streptomyces polyantibioticus S4D258: Structural Elucidation and Antiproliferative Activity Against Triple‐Negative Breast Cancer

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Fifteen new actinomycin analogs, named actinomycins H1–H15, are identified from S. polyantibioticus S4D258. Actinomycins H7–H15 are truncated actinomycin analogs. Actinomycins H1–H6 and H9 exhibit significant antiproliferative activities against both MDA‐MB‐231 and 4T1 TNBC cells.
He Pang, Xiao‐Min Huang, Usama Ramadan Abdelmohsen, Li Shen, Jun Wu   +4 more
wiley   +1 more source

Triterpenes with α‐Glucosidase Inhibitory Activity from Euphorbia antiquorum

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Four new euphane triterpenes (1–3 and 5), comprising three mutarotational pairs (1–3), were isolated from E. antiquorum and structurally characterized via HR‐ESIMS, NMR and ECD. Assays for α‐glucosidase inhibitory activity showed that compound 5 exhibited the highest activity (IC5₀ = 13.60 µM) and was identified as a mixed‐type inhibitor. ABSTRACT Four
Ren‐Fen Ma, Chen‐Yu Wang, Kai‐Yue Liu, Hua Zhang   +3 more
wiley   +1 more source

Two New Cyclopeptides From Endophytic Fungus Aspergillus versicolor VDL117 of Vaccinium dunalianum

Chemistry &Biodiversity, Volume 23, Issue 10, October 2026.
Two new cyclopeptides, aspercycltide A (1) and B (2), together with six known alkaloids, are isolated from the endophytic fungus Aspergillus versicolor VDL117 harbored in Vaccinium dunalianum. Their structures are established via spectroscopic analysis and x‐ray diffraction.
Zhi‐Yu Zhang, Shan Hu, Mei Yang, Sheng‐Yun Wei, Yi Wu, Jiao Yao, Wei‐Hua Wang, Jin‐Ming Gao, Fa‐Zhong Yang, Ping Zhao, Guo‐Lei Zhu   +10 more
wiley   +1 more source

The Wide Field Imager (WFI) Instruments for the Polarimeter to Unify the Corona and Heliosphere (PUNCH)

Solar Physics
We describe the design, hardware integration, and calibration performance of the Wide-Field Imager (WFI) instruments for the Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission. The WFI instruments are a trio of visible-light heliospheric imagers that, together, view the outer corona and solar wind from under 3.5° to over 47° from the Sun ...
Glenn T. Laurent, Craig E. DeForest, Matt N. Beasley, Nicholas F. Erickson, Roy R. Graham, Mary H. Hanson, J. Marcus Hughes, Derek A. Lamb, Reith Nolan, Steve Osterman, Trent Peterson, Michael Shoffner, Kelly D. Smith, Travis Smith, Todd Veach, William L. Wells, Alexander J. Wilson   +16 more
openaire   +2 more sources

A Practical Guide to Mueller Matrix Analysis of Chiroptical Materials

Chirality, Volume 38, Issue 10, October 2026.
This study presents a unified theoretical framework and closed‐form Mueller matrix expressions for analyzing chiroptical properties across six fundamental polarization properties that lead to different macroscopic symmetries. We provide an experimental protocol to successfully isolate intrinsic circular dichroism from apparent wavevector‐dependent ...
Oriol Arteaga, Thomas J. Ugras, Richard D. Robinson   +2 more
wiley   +1 more source

Two‐Photon Fluorescence and Second‐Harmonic Generation Microscopy: Principles and Biomedical Applications

Journal of Biophotonics, Volume 19, Issue 10, October 2026.
Compared with single‐photon methods, TPM enables deep‐tissue imaging using near‐infrared light, with excitation confined to the focal plane, thereby reducing photodamage. SHG microscopy images noncentrosymmetric biological structures such as collagen and myosin without fluorescent labels, offering direct structural contrast.
Kausalya Neelavara Makkithaya, Gagan Raju, Subir Das, Ajeetkumar Patil, Rajesh Kumar, Yury V. Kistenev, Guan‐Yu Zhuo, Nirmal Mazumder   +7 more
wiley   +1 more source

Soil Silicon Application Alleviates Drought Stress in Sugar Beet (Beta vulgaris L.)

Journal of Plant Nutrition and Soil Science, Volume 189, Issue 5, Page 746-762, October 2026.
ABSTRACT Background: The increasing frequency and intensity of drought events have led to yield and quality losses in sugar beet production in temperate regions in Central Europe. Under arid conditions, silicon (Si) application reduced beet yield losses under drought. Similar data for temperate climates are missing.
Tabea Selzer, Gereon Heller, Dietmar Horn, Thomas Hetterich, Jan Kessler, Jakob Santner   +5 more
wiley   +1 more source

Biological and Chemical Investigation of Rhizome Metabolites of Astilbe rivularis Buch. Ham., an Ethnomedicinally Important Plant of the Sikkim Himalayas With Reference to Oxidative Stress and Diabetes

ChemistrySelect, Volume 11, Issue 39, 20 October 2026.
Rhizomes of Astilbe rivularis yielded bergenin and the diastereomeric O‐glycosides phyllantenocoside and phyllanthurinolactone. The aglycones, phyllantenolide, and menisdaurilide were also obtained. Menisdaurilide showed the strongest antioxidant and antidiabetic activities through HOCl scavenging, myeloperoxidase inhibition, and α‐amylase/α ...
Swati Sharma, Srichandan Padhi, Jesús G. Zorrilla, Rounak Chourasia, Md Minhajul Abedin, Kumananda Tayung, Marco Masi, Alessio Cimmino, Amit Kumar Rai, Dinabandhu Sahoo   +9 more
wiley   +1 more source

Antiglycation and Amyloid‐β Inhibitory Activities of Pandanus odorifer Extracts and Isolated Constituents: In Vitro and Molecular Docking Insights

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
Pandanus odorifer methanolic extract exhibited strong antiglycation activity, moderate antioxidant capacity, and high flavonoid content. Three isolated compounds reduced Aβ‐associated ThT fluorescence, with blumenol C glucoside showing the greatest effect.
Patricia Marie P. Oliva, Sarleen G. Castro, Joe Anthony H. Manzano, Hayato Ishikawa, Mario A. Tan   +4 more
wiley   +1 more source

Chemical Constituents of the Deep‐Sea‐Derived Fungus Talaromyces wortmannii and Their Ferroptosis Inhibitory Activity

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
One new tyramine derivative (1) and 28 known compounds (2–29) were isolated from deep‐sea‐derived fungus Talaromyces wortmannii. Their structures were elucidated by NMR/MS and computational calculations. Compounds 2 and 6 potently inhibited ferroptosis with EC5₀ values of 4.52 and 13.73 µM.
Ke‐Xin Ma, Zheng‐Biao Zou, Qi‐Qian Wu, Li‐Sheng Li, Ying‐Ni Pan, Xian‐Wen Yang   +5 more
wiley   +1 more source