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
Tuning Cyclometalated Gold(III) for Cysteine Arylation and Ligand-Directed Bioconjugation
作者:Sailajah Gukathasan、Sean Parkin、Esther P. Black、Samuel G. Awuah
DOI:10.1021/acs.inorgchem.1c01517
日期:2021.10.4
challenges in chemical biology. Unique bioorthogonal chemistry can be achieved with preformed metal-based compounds; however, their utility in native protein sites within cells remain underdeveloped. Here, we tune the ancillary ligands of cyclometalated gold(III) as a reactive group, and the gold scaffold allows for rapid modification of a desired cysteine residue proximal to the ligand binding site of a target
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
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。
C,O-Chelated BINOL/Gold(III) Complexes: Synthesis and Catalysis with Tunable Product Profiles
作者:Jian-Fang Cui、Hok-Ming Ko、Ka-Pan Shing、Jie-Ren Deng、Nathanael Chun-Him Lai、Man-Kin Wong
DOI:10.1002/anie.201612243
日期:2017.3.6
Unprecedented stable BINOL/gold(III) complexes, adopting a novel C,O‐chelation mode, were synthesized by a modular approach through combination of 1,1′‐binaphthalene‐2,2′‐diols (BINOLs) and cyclometalated gold(III) dichloride complexes [(C^N)AuCl2]. X‐ray crystallographic analysis revealed that the bidentate BINOL ligands tautomerized and bonded to the AuIII atom through C,O‐chelation to form a five‐membered
Anticancer gold(<scp>iii</scp>)-bisphosphine complex alters the mitochondrial electron transport chain to induce <i>in vivo</i> tumor inhibition
作者:Jong Hyun Kim、Samuel Ofori、Sean Parkin、Hemendra Vekaria、Patrick G. Sullivan、Samuel G. Awuah
DOI:10.1039/d1sc01418h
日期:——
we capitalized on the rich chemistry of gold to create organometallic gold(III) compounds by ligand tuning. We obtained novel organogold(III) compounds bearing a 1,2-bis(diphenylphosphino)benzene ligand, providing structural diversity with optimal physiological stability. Biological evaluation of the lead compound AuPhos-89 demonstrates mitochondrial complex I-mediated alteration of the mitochondrial
扩大金属配合物的化学多样性为生成功能性生物活性试剂提供了一个强大的平台。为了获得用于探针/药物发现的优秀金属化合物库,我们利用金丰富的化学性质,通过配体调节来创建有机金属金 ( III ) 化合物。我们获得了带有 1,2-双(二苯基膦)苯配体的新型有机金 ( III ) 化合物,该化合物提供了结构多样性和最佳的生理稳定性。先导化合物AuPhos-89的生物学评估表明,线粒体复合物 I 介导的线粒体电子传递链 (ETC) 改变可驱动呼吸并减少三磷酸腺苷 (ATP) 形式的细胞能量。作用机制研究、RNA-Seq、定量蛋白质组学和 NCI-60 筛选揭示了一种调节线粒体 ETC 的高效抗癌剂。 AuPhos-89抑制转移性三阴性乳腺癌的肿瘤生长,代表了一种研究线粒体呼吸调节的新策略,用于治疗侵袭性癌症和线粒体在病理生物学中发挥关键作用的其他疾病状态。