Results 191 to 200 of about 18,411 (287)

Diarylethene‐Containing Photoswitchable Analogues of Tubulysins—Design, Synthesis, Biological, and Structural Evaluation

European Journal of Organic Chemistry, EarlyView.
Diarylethene‐containing cyclic tubulysin analogues were designed, synthesized, and evaluated as light‐responsive cytotoxic agents. One analogue showed reversible photoswitching, photoregulated tubulin polymerization inhibition, and photoform‐dependent cytotoxicity.
Anna Iampolska, Sergii Afonin, Oleg Babii, Mahri Park, Juan Estévez‐Gallego, Michel O. Steinmetz, Andrea E. Prota, Anne S. Ulrich, David R. Spring, Igor V. Komarov   +9 more
wiley   +1 more source

Regioselective Oxidative Oligomerization of 2‐Tert‐Butylpyrene Toward Structurally Defined Oligomers and Their Application in Organic Light‐Emitting Diodes

European Journal of Organic Chemistry, EarlyView.
Treatment of 2‐tert‐butylpyrene with Cu2+ afforded structurally well‐defined pyrene oligomers, up to the 13‐mer. Single‐crystal X‐ray diffraction, spectroscopic analyses, and computational studies were conducted to evaluate the properties of the resulting oligopyrenes.
Md Jadu Mia, Daiki Tauchi, Miku Mizoe, Teru Hashimoto, Masashi Hasegawa, Hiroaki Chihara, Hiroto Iwano, Shigeyuki Yagi, Marco Fusè, Giuseppe Mazzeo, Giovanna Longhi, Sergio Abbate, Qingyu Wang, Tamaki Nakano, Ken‐ichi Sugiura   +14 more
wiley   +1 more source

NaHMDS/B(C₆F₅)₃-promoted diastereoselective Friedel-Crafts alkylation of indoles/pyrroles with <i>N-tert</i>-butanesulfinylimines: towards the asymmetric synthesis of bisindole alkaloid Calcicamide B. [PDF]

RSC Adv
Zhang G, Chen X, Liu Y, Peng R, Xu M, Yan S, Xiao J, Liu Z, Min Q, Liao G, Wang X, Qin S.   +11 more
europepmc   +1 more source

The Expanding Role of Diazirines in Synthetic Methodology

European Journal of Organic Chemistry, EarlyView.
Beyond their established role in photoaffinity labeling, diazirines have emerged as versatile reagents in synthetic chemistry. This review highlights their dual reactivity as carbene and nitrogen‐transfer precursors, showcasing mechanistic insights and diverse applications in cyclopropanations, cycloadditions, skeletal editing, amination, heterocycle ...
Viktor Savic, Dominik Schnalzer, Marko D. Mihovilovic, Michael Schnürch   +3 more
wiley   +1 more source

Asymmetric [3 + 2] Cycloaddition to Access 3-Pyrrolines and Their Switchable Transformations to Nine-Membered Cyclic Sulfamidates and 2H-Pyrroles. [PDF]

Adv Sci (Weinh)
Choi SM, Park JU, Kim JH.
europepmc   +1 more source

Selective N‐Functionalization of Pyrazoles

European Journal of Organic Chemistry, EarlyView.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek, Matthias Schrader, Christopher J. Teskey   +2 more
wiley   +1 more source

Recent progress in catalytic asymmetric synthesis of triarylmethanes. [PDF]

Chem Sci
Han Y, Li L, Loh TP.
europepmc   +1 more source

Counterion Effects in Decatungstate Photocatalysis

European Journal of Organic Chemistry, EarlyView.
Decatungstate photocatalysis is often discussed from an anion‐centered perspective, treating the counterion as a passive charge‐balancing species. This review highlights that counterion identity can instead profoundly influence catalyst solubility, ion pairing, aggregation, stability, substrate accessibility, and catalytic performance.
Florence Babawale, Burkhard König, Indrajit Ghosh   +2 more
wiley   +1 more source

Oxidative Porphyrinoid Metamorphosis of Fourfold N-Confused [32]Octaphyrin Bis-Metal Complex to Doubly Linked 10-Oxacorrole Metal Complex Dimer. [PDF]

Angew Chem Int Ed Engl
Liu Y, Xu L, Rao Y, Yin B, Zhou M, Osuka A, Song J.   +6 more
europepmc   +1 more source

Strategic construction of fluorinated surroundings in NIR‐II‐emissive organic semiconducting agents for amplifying cancer phototheranostics

FlexMat, EarlyView.
The development of conventional phototheranostic nanomedicines suffers from an intrinsic trade‐off between NIR‐II fluorescence emission and phototherapeutic effects, leading to poor overall efficacy. Herein, we propose an innovative fluorination strategy by constructing fluorinated surroundings in NIR‐II‐emissive organic semiconducting agents to ...
Xiaoming Hu, Achen Qin, Caijun Zhu, Jinshuo Mi, Zejing Chen, Jiaying Shao, Zhen Li, Zhen Yang   +7 more
wiley   +1 more source