Construction of C(sp<sup>2</sup>)–Si Bonds via Ligand-Promoted C–C Bonds Cleavage of Unstrained Ketones
作者:Xing Wang、Zhen-Yu Wang、Xu Zhang、Hui Xu、Hui-Xiong Dai
DOI:10.1021/acs.orglett.2c02841
日期:2022.10.14
Herein, we report an efficient palladium-catalyzed silylation of aryl and alkenyl ketonesviaC–Cbondcleavage and C–Si bond formation. This protocol features high efficiency and broad substrate scope. Further applications in the late-stage diversification of biologically important molecules demonstrate the synthetic utility of this method.
Exploring naphthyl-carbohydrazides as inhibitors of influenza A viruses
作者:Sanmitra Barman、Lei You、Ran Chen、Vlad Codrea、Grace Kago、Ramakrishna Edupuganti、Jon Robertus、Robert M. Krug、Eric V. Anslyn
DOI:10.1016/j.ejmech.2013.10.063
日期:2014.1
A library of hydrazide derivatives was synthesized to target non-structural protein 1 of influenza A virus (NS1) as a means to develop anti-influenza drug leads. The lead compound 3-hydroxy-N-[(Z)-1-(5,6,7,8-tetrahydronaphthalen-2-yl)ethylideneamino]naphthalene-2-carboxamide, which we denoted as "HENC", was identified by its ability to increase the melting temperature of the effector domain (ED) of the NS1 protein, as assayed using differential scanning fluorimetry. A library of HENC analogs was tested for inhibitory effect against influenza A virus replication in MDCK cells. A systematic diversification of HENC revealed the identity of the R group attached to the imine carbon atom significantly influenced the antiviral activity. A phenyl or cyclohexyl at this position yielded the most potent antiviral activity. The phenyl containing compound had antiviral activity similar to that of the active form of oseltamivir (Tamiflu), and had no detectable effect on cell viability. (C) 2013 Elsevier Masson SAS. All rights reserved.
Bailey; Staveley, Journal of the Institute of Petroleum, 1956, vol. 42, p. 97,99