98%
921
2 minutes
20
-Methyliminodiacetic acid (MIDA) boronates are boronic acid derivatives which are stable to reduction, oxidation and transmetalation. This has led to their widespread use as boronic acid protecting groups (PGs) and in iterative cross-couplings. We describe herein the development of a novel MIDA derivative that acts in a dual manner, as a protecting group and a directing group (DG) for C(sp)-H functionalisation of arylboronic acids. Palladium catalysed C-H alkenylations, acetoxylations and arylations are possible, at room temperature and under aerobic conditions. Deprotection to reveal the functionalised boronic acids is rapid and allows for full recovery of the DG. The technique allows the facile diversification of aryl boronic acids and their subsequent use in a range of reactions or in iterative processes.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8152520 | PMC |
http://dx.doi.org/10.1039/d0sc00230e | DOI Listing |
Background: Angioimmunoblastic T-cell lymphoma (AITL) is a rare and aggressive form of peripheral T-cell lymphoma, accounting for 1 - 2% of non-Hodgkin lymphomas. Diagnosis is challenging, and there is no established standard first-line treatment. This case report highlights a rare progression from AITL to therapy-related acute myeloid leukemia (AML-pCT) following cytotoxic chemotherapy.
View Article and Find Full Text PDFCell Mol Biol (Noisy-le-grand)
September 2025
Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Despite significant advancements in the treatment of non-small cell lung cancer (NSCLC) using conventional therapeutic methods, drug resistance remains a major factor contributing to disease recurrence. In this study, we aimed to explore the potential benefits of combining PI3K inhibition with Cisplatin in the context of NSCLC-derived A549 cells. Human non-small cell lung cancer A549 cells were cultured and treated with BKM120, cisplatin, or their combination.
View Article and Find Full Text PDFAnal Chim Acta
November 2025
State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China. Electronic address:
Background: During intense exercise, anaerobic metabolism predominantly produces energy in the body, resulting in lactic acid (LA) accumulation, which contributes to muscle fatigue and soreness and may also impair neurological and cardiovascular functions. In endurance sports, the lactate threshold (LT) is a key indicator of an athlete's capacity to clear and utilize LA, directly influencing athletic performance and endurance. Therefore, LA detection is crucial for assessing the physical condition of both athletes and the general population, as well as for optimizing training programs.
View Article and Find Full Text PDFChemistry
September 2025
Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar, 801106, India.
In this work, we report the design, synthesis, and application of a hyper-crosslinked heterogeneous organometallic porous organic polymer (Pd@TP-DPPF) catalyst for the efficient and sustainable dicarbofunctionalization of internal alkynes via a facile three-component reaction. This strategy enables the highly trans-selective syntheses of tetrasubstituted olefins in excellent yields. The catalyst is constructed by integrating triptycene (TP) and 1,1'-bis(diphenylphosphino)ferrocene (DPPF) into a robust palladium-based porous framework, resulting in a unique heterogeneous system that efficiently mediates the coupling of internal alkynes with readily available iodoarenes and aryl/methyl boronic acids.
View Article and Find Full Text PDFMikrochim Acta
September 2025
State Key Laboratory of Discovery and Utilization of Functional Components in Traditional Chinese Medicine, The MOE Key Laboratory of Standardization of Chinese Medicines, The SATCM Key Laboratory of New Resources and Quality Evaluation of Chinese Medicines, The Shanghai Key Laboratory for Compound
The precise and selective determination of ginsenosides, pharmacologically diverse saponins abundant in Panax species, is crucial for their therapeutic development and stringent quality control. However, inherent challenges, including their weak ultraviolet absorption and the high polarity imparted by sugar moieties, complicate their determination. Addressing these limitations, this study introduces the first-time construction and application of a boronate affinity dendritic mesoporous silica nanomaterial (BA-DMSN) as a highly efficient adsorbent for ginsenoside pretreatment.
View Article and Find Full Text PDF