Identification and further development of thiazolidinones spiro-fused to indolin-2-ones as potent and selective inhibitors of Mycobacterium tuberculosis protein tyrosine phosphatase B
作者:Viktor V. Vintonyak、Karin Warburg、Björn Over、Katja Hübel、Daniel Rauh、Herbert Waldmann
DOI:10.1016/j.tet.2011.04.026
日期:2011.9
biologically active component. The reported MptpB inhibitors show excellent selectivity against a selected panel of protein tyrosinephosphatases, including MptpA (M. tuberculosis protein tyrosinephosphatase A), PTP1B (protein tyrosinephosphatase 1B), SHP-2 (Src homology 2 domain-containing protein tyrosinephosphatase), PTPN2, h-PTPβ (human protein tyrosinephosphatase β), and VHR (Vaccinia virus VH1-related
Palladium catalyzed divergent cycloadditions of vinylidenecyclopropane-diesters with methyleneindolinones enabled by zwitterionic π-propargyl palladium species
作者:Ben Niu、Yin Wei、Min Shi
DOI:10.1039/d1cc01453f
日期:——
spirooxindoles fused with a five- or a six-membered ring by a cycloaddition reaction of vinylidenecyclopropane-diesters with methyleneindolinones was disclosed. This protocol features an in situ generated unprecedented zwitterionic π-propargyl palladium species in cycloaddition reactions and a switchable process between (3+2) and (4+2) cycloadditions by changing the phosphine ligand.
NHC-Catalyzed Aldol-Like Reactions of Allenoates with Isatins: Regiospecific Syntheses of γ-Functionalized Allenoates
作者:Sha Li、Ziwei Tang、Yang Wang、Dan Wang、Zhanlin Wang、Chenxia Yu、Tuanjie Li、Donghui Wei、Changsheng Yao
DOI:10.1021/acs.orglett.8b04082
日期:2019.3.1
carbene (NHC) catalyzed γ-specific aldol-like reaction between allenoates and isatins has been achieved under mild conditions, giving trisubstituted allene derivatives bearing isatin moiety in moderate to good yields with high diastereoselectivity and excellent atom efficiency. The DFT computations indicated that the formation of the γ-adduct was more energetically favorable than that of the α-adduct. The
We demonstrate that using palladium acetate as a catalyst for reduction of DMF and isatin derivatives by hydrosilanes, a cascade hydrosilylation and amino‐methylation reaction can be realized. With DMF as a reactant and a solvent, the in‐situ generated siloxymethylamine intermediate, an adduct of DMF and hydrosilanes, smoothly participates in the successive stages, providing a serials of Si, N‐functionalized
作者:Mahmoud F. Abo-Ashour、Wagdy M. Eldehna、Alessio Nocentini、Hany S. Ibrahim、Silvia Bua、Sahar M. Abou-Seri、Claudiu T. Supuran
DOI:10.1016/j.ejmech.2018.07.054
日期:2018.9
efforts towards developing novel carbonicanhydraseinhibitorsbased on the isatin moiety, herein we report the synthesis and biologicalevaluation of novel sulfonamides (5a-h, 10a-g and 11a-c) incorporating substituted 2-indolinone moiety (as tail) linked to benzenesulfonamide (as zinc anchoring moiety) through a hydrazide linker. The synthesized sulfonamides were evaluated in vitro for their inhibitory