Results 111 to 120 of about 161,675 (297)

Synthesis of аlkenyloxy(аміnо)pyrazolo[3,4-D]pyrimidine-4-ones

open access: yes, 2014
Alkenyl ethers regioselectively synthesized pyrazolo [3,4-d] pyrimidine-4-one, did not make a direct alkylation of pyrazolo [3,4-d] pyrimidine-4,6-dione.
Свалявин, Н. І.   +4 more
core  

Accelerating green heterocyclic synthesis: Convergence of AI, automation, and sustainable chemistry

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Green heterocyclic synthesis and data‐driven tools such as AI, high‐throughput experimentation, continuous flow, and self‐driving laboratories have developed largely in parallel. This review connects them and asks how green metrics such as E‐factor and PMI might serve as explicit optimization targets rather than post‐hoc measures, toward sustainable ...
Noor Aisyah Ahmad Shah   +8 more
wiley   +1 more source

The Hydrophilic Metabolite UMP Alleviates Obesity Traits through a HIF2α‐ACER2‐Ceramide Signaling Axis

open access: yesAdvanced Science
Metabolic abnormalities contribute to the pathogenesis of obesity and its complications. Yet, the understanding of the interactions between critical metabolic pathways that underlie obesity remains to be improved, in part owing to the lack of ...
Huiying Liu   +9 more
doaj   +1 more source

Multicomponent reactions for DNA‐encoded library construction: Scaffold diversity and reaction engineering strategies

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Abstract DNA‐encoded libraries (DELs) enable large‐scale screening for hit identification, but accessing sp3‐rich, three‐dimensional chemotypes beyond flat, aromatic scaffolds remains challenging. Multicomponent reactions (MCRs) assemble such complexity from simple building blocks in a single step, and reaction‐engineering strategies have extended on ...
Jimin Moon   +3 more
wiley   +1 more source

Photodimerization in pyrimidine-substituted dipeptides

open access: yes, 2005
Ten N-epsilon-glycylornithineamide derivatives have been synthesized containing various N-alpha-linked pyrimidine-1-ylacetyl groups which can undergo (2 pi + 2 pi) photodimerization on irradiation with UV light at 254 rim.
Ramanujam, P.S.   +3 more
core   +1 more source

Biomimetic N‐cyano sulfoximine–thiazole ligation for antibody–drug conjugate assembly

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Biomimetic N‐cyano sulfoximine–thiazole ligation is applied for the first time to antibody–drug conjugate assembly. Installation of a sulfoximine handle on trastuzumab followed by ligation with a cysteine‐functionalized payload affords model ADCs with tunable drug‐to‐antibody ratios of 2–8 under mild aqueous conditions.
Eunsil Kim   +7 more
wiley   +1 more source

Harnessing ferroptosis from multilayer defense networks to nanoplatforms for specific cancer therapy

open access: yesBMEMat, EarlyView.
Nanomaterials target metabolically‐regulated ferroptosis for cancer therapy. Iron‐based or alternative nanoplatforms integrate ferroptosis with chemotherapy, immunotherapy, or radiotherapy. They enable stimulus‐responsive therapies (photothermal, photodynamic, sonodynamic) activated by near‐infrared, light, or ultrasound, achieving potent synergistic ...
Xinyue Xu   +5 more
wiley   +1 more source

Purification and properties of bacterial pyrimidine nucleosidase

open access: yes, 1951
The metabolism of pyrimidine nucleosides was found to be similar to the dissimilation of purine nucleosides. Thus pyrimidine base is cleaved from the nucleoside and is accumulated.
Paege, Lynn
core   +1 more source

RNA‐centric world of retroviruses: unravelling the molecular strategies of genomic RNA packaging

open access: yesBiological Reviews, EarlyView.
ABSTRACT Retroviruses constitute a unique group of RNA viruses that have profoundly influenced both evolutionary trajectories and biomedical research. Their ability to reverse transcribe and integrate into host genomes has shaped genomic architecture across species and contributed to our understanding of oncogenes, gene regulation, and RNA biology ...
Mohammad Abdullah Jehad   +5 more
wiley   +1 more source

Elevated Expression of Pyrimidine Nucleoside Phosphorylase (PyNPase) in Renal Cell Carcinoma Tissue [PDF]

open access: yes, 2001
Background: Pyrimidine nucleoside phosphorylase (PyNPase) is an enzyme that converts 5'-deoxy-5-fluorouridine to 5- fluorouracil. PyNPase is identical to platelet-derived endothelial cell growth factor (PD-ECGF), and has angiogenic activity.
Maeda, Kanenori   +4 more
core  

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