88636-52-6Relevant academic research and scientific papers
Exploring Heteroaryl-pyrazole Carboxylic Acids as Human Carbonic Anhydrase XII Inhibitors
Cadoni, Roberta,Pala, Nicolino,Lomelino, Carrie,Mahon, Brian P.,McKenna, Robert,Dallocchio, Roberto,Dessì, Alessandro,Carcelli, Mauro,Rogolino, Dominga,Sanna, Vanna,Rassu, Mauro,Iaccarino, Ciro,Vullo, Daniela,Supuran, Claudiu T.,Sechi, Mario
, p. 941 - 946 (2017)
We report the synthesis, biological evaluation, and structural study of a series of substituted heteroaryl-pyrazole carboxylic acid derivatives. These compounds have been developed as inhibitors of specific isoforms of carbonic anhydrase (CA), with potential as prototypes of a new class of chemotherapeutics. Both X-ray crystallography and computational modeling provide insights into the CA inhibition mechanism. Results indicate that this chemotype produces an indirect interference with the zinc ion, thus behaving differently from other related nonclassical inhibitors. Among the tested compounds, 2c with Ki = 0.21 μM toward hCA XII demonstrated significant antiproliferative activity against hypoxic tumor cell lines. Taken together, the results thus provide the basis of structural determinants for the development of novel anticancer agents.
Structural modification from agonists to antagonists in the synthesis of new 5-hydroxytryptamine (5-HT3) receptor antagonists and preliminary in-vitro pharmacological evaluation on guinea-pig ileum
Srinivas,Subramanian,Raghavan,Babu, R. Jagadeesh,Gupta,Sridhar,Veeranjaneyulu,Parimoo
, p. 95 - 101 (1999)
Structural variations from agonists to their selective antagonists follow specific patterns. These patterns in reported molecules or drugs were analysed and common variation patterns, as possible principles to design new antagonistic drugs, were studied.
Exploiting single-molecule magnets of β-diketone dysprosium complexes with C3v symmetry: Suppression of quantum tunneling of magnetization
Dong, Yanping,Yan, Pengfei,Zou, Xiaoyan,Liu, Tianqi,Li, Guangming
, p. 4407 - 4415 (2015)
A series of four β-diketone mononuclear dysprosium complexes, namely, Dy(EIFD)3(H2O)·CH2Cl2 (1), Dy(EIFD)3(DMF)·CH2Cl2 (2), Dy(EIFD)3(DMSO) (3), and Dy(EIFD)3/su
Cascade Access to Carboline Carboxylates from Indolyl Ketoximes and Acrylates via Palladium-Catalyzed C-H Bond Alkenylation/Annulation
Fu, Xiao-Pan,Chen, Lu,Wu, Gao-Rong,Liu, Hong-Wei,Xia, Cheng-Cai,Ji, Ya-Fei
supporting information, p. 69 - 74 (2020/08/24)
An efficient palladium-catalyzed C-H bond alkenylation/annulation strategy to access carboline carboxylates from indolyl ketoximes and acrylates through C-C/C-N bond formation is reported. Indolyl ketoximes not only direct ortho -olefination with acrylate
Synthesis and bioactivity assessment of novel spiro pyrazole-oxindole congeners exhibiting potent and selective in vitro anticancer effects
Abdelhamid, Sayeda A.,Abo-Salem, Heba M.,Aboul-Soud, Mourad A. M.,Al-Sheikh, Yazeed A.,Ebied, Manal S.,El-Sawy, Eslam R.,Elawady, Mohamed E.,Nassrallah, Amr,Soliman, Ahmed A. F.
, (2020/03/17)
The present work aims to design and synthesize novel series of spiro pyrazole-3,3'-oxindoles analogues and investigate their bioactivity as antioxidant and antimicrobial agents, as well as antiproliferative potency against selected human cancerous cell li
Weak Coordination Enabled Switchable C4-Alkenylation and Alkylation of Indoles with Allyl Alcohols
Banerjee, Sonbidya,De, Pinaki Bhusan,Mishra, Manmath,Pradhan, Sourav,Punniyamurthy, Tharmalingam
, (2020/03/11)
A weak carbonyl coordination facilitated tunable reactivity between alkenylation and alkylation of indoles at the C4 C-H site is presented using readily accessible allylic alcohols in the presence of Rh catalysis by switching the additives or directing group. Exclusive site selectivity, functional group tolerance, and late-stage modifications are the important practical features.
Rhodium(III)-catalyzed C4-amidation of indole-oximes with dioxazolones: Via C-H activation
Deng, Ke-Zuan,Fu, Xiao-Pan,Ji, Ya-Fei,Tang, Shi-Biao,Wu, Gao-Rong,Xia, Cheng-Cai,Yang, Jin-Yue,Zhang, Li-Li
, p. 7922 - 7931 (2020/11/02)
A novel method for the Rh(III)-catalyzed oxime-directed C-H amidation of indoles with dioxazolones has been developed. This strategy provides an exclusive site selectivity and the directing group can be easily removed. This transformation features a wide substrate scope, good functional group tolerance and excellent yields, and may serve as a significant tool to construct structurally diverse indole derivatives for the screening of potential pharmaceuticals in the future. This journal is
γ-Carboline synthesis enabled by Rh(iii)-catalysed regioselective C-H annulation
Jiang, Bo,Jia, Jingwen,Sun, Yufei,Wang, Yichun,Zeng, Jing,Bu, Xiubin,Shi, Liangliang,Sun, Xiaoying,Yang, Xiaobo
supporting information, p. 13389 - 13392 (2020/11/10)
A redox-neutral Rh(iii)-catalyzed C-H annulation of indolyl oximes was developed. Relying on the use of various alkynyl silanes as the terminal alkyne surrogates, the reaction exhibited a reverse regioselectivity, thus giving an exclusive and easy way for the synthesis of a wide range of substituent free γ-carbolines at C3 position with high efficiency. Deuterium-labelling experiments and kinetic analysis have preliminarily shed light on the working mode of this catalytic system. This journal is
Cobalt-Catalyzed Regioselective Direct C-4 Alkenylation of 3-Acetylindole with Michael Acceptors Using a Weakly Coordinating Functional Group
Banjare, Shyam Kumar,Nanda, Tanmayee,Ravikumar
, p. 8138 - 8143 (2019/10/14)
Herein, we disclosed the first report on the selective C(4)-H functionalization of 3-acetylindole derivatives using first-row transition metal cobalt where an acetyl group is acting as a weakly coordinating directing group. Selective C(4)-H functionalization has been achieved using diverse Michael acceptors (acrylate and maleimide) simply by switching the additive from copper acetate to silver carbonate. Further the formation of a cobaltacycle intermediate was also detected through HRMS for mechanistic insight.
Synthesis and Inhibitory Effect of Some Indole-Pyrimidine Based Hybrid Heterocycles on α-Glucosidase and α-Amylase as Potential Hypoglycemic Agents
Badria, Farid A.,Atef, Saleh,Al-Majid, Abdullah Mohammed,Ali,Elshaier, Yaseen A. M. M.,Ghabbour, Hazem A.,Islam, Mohammad Shahidul,Barakat, Assem
, p. 1288 - 1297 (2019/11/11)
The Michael addition reaction of barbituric acid with chalcones incorporating the indole scaffold was achieved by using a highly efficient bimetallic Iron–palladium catalyst in the presence of acetylacetone (acac). This catalytic approach produced the desired products in a simple operation and low catalyst loading with acceptable yield of the new hybrids. All tested compounds were subjected for biological activity on α-glucosidase and α-amylase. The results revealed that all synthesized compounds exhibited very good activity against both enzymes when compared to positive control (acarbose). Moreover, compound 5o showed the best activity whereas its IC50 (μM) are 13.02+0.01 and 21.71+0.82 for α-glucosidase and α-amylase respectively. Both compounds 5o and 5l exhibited high similarity in binding mode and pose with amylase protein (4UAC). The obtained data may be used for developing potential hypoglycemic agents.
