Results 41 to 50 of about 4,473 (184)

Effects of Biotin on a Fluorescein‐Based Photosensitizer Revealed by Multiscale Computational Modeling

Chemistry – A European Journal, EarlyView.
Biotinylation of a fluorescein‐based photosensitizer enhances its performance in PDT through a synergistic dual action. In addition to Type II singlet oxygen generation common to both dyes, the biotinylated system induces stronger membrane perturbation and higher local accumulation in lipid membranes, associated with increased water permeability and ...
Valeria Butera, Alessandra Gilda Ritacca, Giampaolo Barone, Nino Russo, Marta Erminia Alberto   +4 more
wiley   +1 more source

Four New Insecticidal Xanthene Derivatives from the Mangrove-Derived Fungus Penicillium sp. JY246

Marine Drugs, 2019
Four new xanthene derivatives, penicixanthenes A−D (1−4), and one known compound 5 were isolated from a marine mangrove endophytic fungus Penicillium sp. JY246 that was obtained from the stem of Ceriops tagal. Their structures were determined
Meng Bai, Cai-Juan Zheng, Xu-Hua Nong, Xue-Ming Zhou, You-Ping Luo, Guang-Ying Chen   +5 more
doaj   +1 more source

Synthesis of Cyano-Benzylidene Xanthene Synthons Using a Diprotic Brønsted Acid Catalyst, and Their Application as Efficient Inhibitors of Aluminum Corrosion in Alkaline Solutions

Molecules, 2022
Novel cyano-benzylidene xanthene derivatives were synthesized using one-pot and condensation reactions. A diprotic Brønsted acid (i.e., oxalic acid) was used as an effective catalyst for the promotion of the synthesis process of the new starting xanthene–
Mohammed A. Amin, Gaber A. M. Mersal, Morad M. El-Hendawy, Abdallah A. Shaltout, Ali Badawi, Johan Boman, Adil A. Gobouri, Murat Saracoglu, Fatma Kandemirli, Rabah Boukherroub, Jacek Ryl, Mohamed E. Khalifa   +11 more
doaj   +1 more source

Control of Gemcitabine Activity With Blue and Red Light

Chemistry – A European Journal, EarlyView.
Treating cancer with chemotherapy is generally associated with many side effects, which can be addressed by selectively releasing the desired drugs with visible light. Sixteen new blue light‐activatable cytostatics were introduced, with the gemcitabine derivative exhibiting ideal properties.
Nils F. Kersten, Konstantin L. Stock, Marius Hyprath, Hannah Weisser, Timo Weinrich, Dieter Steinhilber, Alexander Heckel   +6 more
wiley   +1 more source

12-(3,4,5-Trimethoxyphenyl)-2,3,4,12-tetrahydro-1H-5-oxatetraphen-1-one: crystal structure and Hirshfeld surface analysis

Acta Crystallographica Section E: Crystallographic Communications, 2016
In the title compound, C26H24O5, the pyran ring has a flattened-boat conformation, with the 1,4-related ether O and methine C atoms lying 0.1205 (18) and 0.271 (2) Å, respectively, above the least-squares plane involving the doubly bonded C atoms (r.m.s ...
Mukesh M. Jotani, P. Iniyavan, V. Vijayakumar, S. Sarveswari, Yee Seng Tan, Edward R. T. Tiekink   +5 more
doaj   +1 more source

Fe3o4 nanoparticles: A highly efficient and easily reusable catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions [PDF]

Journal of the Serbian Chemical Society, 2013
Magnetically separable Fe3O4 nanoparticles supply environmentally friendly procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene and 1,8-dioxo-octahydro-xanthene derivatives.
Ghasemzadeh Ali Mohammad, Safaei-Ghomi Javad, Zahedi Safura   +2 more
doaj   +1 more source

RhodaMal Dyes: Novel Red Emissive Fluorophores as Probes for High Contrast Live‐Cell Imaging

Chemistry – A European Journal, EarlyView.
Incorporation of malononitrile into the traditional rhodol framework furnishes RhodaMal (Rhoda = Rhodamine, Mal = Malononitrile;) dyes, a new class of red emissive push–pull chromophores. Conjugating them to triphenylphosphonium cation enables live cell super‐resolution STED microscopy with a 775 nm depletion laser.
A. Mavroskoufis, P. Aßmann, L. M. Filla, I. Bilici, E. Quaas, M. Maglione, S. Sigrist, R. Haag, K. Licha   +8 more
wiley   +1 more source

1,4-diazanium-bicyclo[2.2.2]octane diacetate: As an effective, new and reusable media for the synthesis of 14-aryl-14H-dibenzo [a,j]xanthenes

Acta Chimica Slovenica, 2016
A general synthetic route to dibenzoxanthenes has been developed using 1,4-diazanium-bicyclo[2.2.2]octane diacetate as a new bis ionic liquid under thermal and solvent free condition.
Leila Zare Fekri, Hajar Saeedi Fard
doaj   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Reactivity of Oxidized Porous Silicon with Calcium Ion in Aqueous Media: Stability, pH Behavior, and Host‐Guest Strategies

Small, EarlyView.
Oxidized porous silicon, composed of an elemental silicon porous skeleton coated with a silica shell, reacts with aqueous Ca2+ to generate a mixed silica–calcium silicate matrix that is remarkably efficient at trapping small molecules. With an emphasis on the engineering of controlled‐release drug delivery systems, this study identifies the factors ...
Ruhan Fan, Qinglin Yang, Michael J. Sailor   +2 more
wiley   +1 more source