Results 151 to 160 of about 48,499 (273)

Advances in the Different Synthetic Routes of Fluorinated Hydrazines

The Chemical Record, EarlyView.
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Dimitra Kyrko, Benoît Crousse
wiley   +1 more source

Clock-Turning Control of P450 TxtE Regioselectivity Enables Precise Site Functionalization of Aromatic Compounds. [PDF]

JACS Au
Yang X, Pan Y, Miao T, Yuan Z, Cong Y, Fang B, Yan X, Zhang J, Chen R, Feng Y, Zhang Z, Gao B, Zhang L.   +12 more
europepmc   +1 more source

Metal‐Free Electrophilic Borylative Cyclizations of Alkynes

The Chemical Record, EarlyView.
Metal‐free borylative cyclizations based on electrophilic alkyne activation by boron Lewis acids provide efficient access to borylated hetero‐ and carbocycles. Early studies using B(C6F5)3 displayed limited scope and application, whereas recent ClBcat‐ and BCl3‐based methods enable mild CB and CC/CX bond formation for the synthesis of cycles ...
Jaime Mateos‐Gil, Marcos Humanes, Manuel A. Fernández‐Rodríguez, Patricia García‐García   +3 more
wiley   +1 more source

Photochemical Cyclization of Tertiary Buta‐2,3‐dienamides to β‐Lactams Upon Triplet Energy Transfer

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Energy transfer is the key to the successful photocyclization of the title compounds to 3,4‐disubstituted 2‐azetidinones. If the substituent at the nitrogen atom is primary (R2 = H), trans products are formed exclusively. The triplet state of xanthen‐9‐one (XT) was found to be quenched by an allene amide (R, R2 = H, R1 = Bn, and R3 = Ph) with a ...
Johannes Hofer, Maria‐Sophie Bertrams, Christoph Kerzig, Thorsten Bach   +3 more
wiley   +2 more sources

Optimization of the External Directing Group Depending on the Substrates for the Regioselective C-H Alkenylation of Phenyl Ethers. [PDF]

Org Lett
Yano K, Sawada D.
europepmc   +1 more source

Engineering of the Flavone Rutinoside Biosynthetic Pathway Enables Production of Diosmin, a Venoactive Compound in Solanum lycopersicum and Nicotiana tabacum

Plant Biotechnology Journal, EarlyView.
ABSTRACT Diosmin is often used as a dietary supplement, and it is sometimes used to make phlebotropic drugs for venous diseases. Traditionally, diosmin is obtained by the dehydrogenation of the flavanone glycoside hesperidin through chemical semisynthesis.
Qianle Zhang, Qingwen Wu, Wenjing Shi, Yinai Deng, Ruoting Zhan, Dongming Ma   +5 more
wiley   +1 more source

Semi‐Reduction of Allenes to Access Deuterated Allylic Isotopomers, Isotopologs and Enantioisotopomers

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Modular and Precise Deuteration: The synthesis of molecules precisely deuterated at allylic, vinylic or both positions remains a challenging task. This work discloses a modular semi‐reductive deuteration that enables the synthesis of various isotopologs including precisely labeled d1‐, d2‐, d3‐, d5‐, and d7‐products.
Lihan Qi, Raviraj Ananda Thorat, Brad D. Maxwell, Jeffery A. Gladding, Aniel J. Rivera Arzola, Shashank P. Sancheti, Reilly E. Sonstrom, Xulin Tang, Isaac J. Anderson, Brooks H. Pate, Joseph R. Clark   +10 more
wiley   +2 more sources

Resurrected Ancestral Cannabis Enzymes Unveil the Origin and Functional Evolution of Cannabinoid Synthases

Plant Biotechnology Journal, EarlyView.
ABSTRACT Cannabinoids, such as tetrahydrocannabinolic acid (THCA), cannabidiolic acid (CBDA) and cannabichromenic acid (CBCA), are bioactive and medicinally relevant compounds found in the cannabis plant (Cannabis sativa L.). These three compounds are synthesised from a single precursor, cannabigerolic acid (CBGA), through regioselective reactions ...
Cloé Villard, Idil Baser, Arjen C. van de Peppel, Katarina Cankar, M. Eric Schranz, Robin van Velzen   +5 more
wiley   +1 more source

HMPA-Enabled Direct γ'-Arylation of Cyclic Vinylogous Esters. [PDF]

Org Lett
Li YX, Zhao WT, Wu YK.
europepmc   +1 more source

Structural Elucidation and Engineering of the (S)‐scoulerine 2‐O‐Methyltransferase Enabling Regioselective Epiberberine Biosynthesis in Coptis chinensis

Plant Biotechnology Journal, EarlyView.
ABSTRACT Protoberberine alkaloids are a characteristic group of natural products in Coptis plants known for their notable pharmacological activities. However, the structural similarity and the substrate promiscuity of their biosynthetic enzymes have left the precise synthetic pathways remain unclarified, posing challenges to regulate product formation.
Jun Song, Di Liu, Shi Chen, Yufeng Tan, Siyu Wang, Shihan Li, Yutong Qin, Guofeng Li, Xufang Tian, Lan Yang, Chong Yuan, Junbo Gou, Wei Huang, Shilin Chen, Yifei Liu   +14 more
wiley   +1 more source