Synthesis, structure and reactivity of a new six-membered cycloaurated complex of 2-benzoylpyridine [AuCl2(pcp-C 1,N )] [pcp = 2-(2-pyridylcarbonyl)phenyl]. Comparison with the cycloaurated complex derived from 2-benzylpyridine
Synthesis, structure and reactivity of a new six-membered cycloaurated complex of 2-benzoylpyridine [AuCl2(pcp-C 1,N )] [pcp = 2-(2-pyridylcarbonyl)phenyl]. Comparison with the cycloaurated complex derived from 2-benzylpyridine
Direct intramolecular carbon(sp<sup>2</sup>)–nitrogen(sp<sup>2</sup>) reductive elimination from gold(<scp>iii</scp>)
作者:Jong Hyun Kim、R. Tyler Mertens、Amal Agarwal、Sean Parkin、Gilles Berger、Samuel G. Awuah
DOI:10.1039/c8dt05155k
日期:——
carbon donor ligands results in reductiveelimination. Combined experimental and computational investigations lead to the first evidence of a direct intramolecular C(sp2)–N(sp2) bond formation from a monomeric [(C^N)AuCl2] gold(III) complex. We show that bidentate ligated Au(III) systems bypass transmetallation to form C(sp2)–N(sp2) species and NHC–Au–Cl. Mechanistic investigations of the reported transformation
reported work, AuIII complexes coordinated with 2‐benzoylpyridine ligand, BPy‐Au, were prebound to a protein and used to discover a novel protein‐directed labeling approach with propargyl ester functional groups. In this work, further examination discovered that gold catalysts devoid of the 2‐benzoylpyridine ligand (e.g., NaAuCl4) had significantly reduced levels of proteinlabeling. Mechanistic investigations
Interfering with Metabolic Profile of Triple‐Negative Breast Cancers Using Rationally Designed Metformin Prodrugs
作者:Maria V. Babak、Kai Ren Chong、Peter Rapta、Markella Zannikou、Hui Min Tang、Lisa Reichert、Meng Rui Chang、Vladimir Kushnarev、Petra Heffeter、Samuel M. Meier‐Menches、Zhi Chiaw Lim、Jian Yu Yap、Angela Casini、Irina V. Balyasnikova、Wee Han Ang
DOI:10.1002/anie.202102266
日期:2021.6.7
Triple-negative breastcancer (TNBC) is the most aggressive subtype of breastcancer, characterized by an aberrant metabolic phenotype with high metastatic capacity, resulting in poor patient prognoses and low survival rates. We designed a series of novel AuIII cyclometalated prodrugs of energy-disrupting Type II antidiabetic drugs namely, metformin and phenformin. Prodrug activation and release of
三阴性乳腺癌(TNBC)是最具侵袭性的乳腺癌亚型,其特点是代谢表型异常,转移能力强,导致患者预后差和存活率低。我们设计了一系列新型 Au III环金属化能量干扰 II 型抗糖尿病药物的前药,即二甲双胍和苯乙双胍。二甲双胍配体的前药激活和释放是通过调整环金属化 Au III片段来实现的。与不协调的二甲双胍相比,铅复合物3met 的细胞毒性高 6000 倍,并且显着降低了患有侵袭性乳腺癌并淋巴细胞浸润到肿瘤组织的小鼠的肿瘤负荷。这些影响归因于3met 干扰 TNBC 中的能量产生并抑制相关的促生存反应以诱导致命的代谢灾难。
Cyclometallated Gold(III) Complexes as Effective Catalysts for Synthesis of Propargylic Amines, Chiral Allenes and Isoxazoles
were achieved in chiralallenesynthesis. Chiralallene racemization could be minimized by using 1f as catalyst. The PEG‐linked catalyst 1m is the most catalytically active towards synthesis of propargylic amines, in which case a product turnover of 900 was achieved. Moreover, 1m could be repeatedly used for 12 reaction cycles, leading to an overall turnover number of 872.
been designed and synthesized. Extensive photophysical and chemical characterization by various nuclear magnetic resonance spectroscopy techniques, elemental analysis and single crystal X-ray diffraction studies of selected compounds was carried out to confirm the structural and the chemical identity of the complexes. The emission wavelength maxima of the complexes appear in the blue/sky blue region of