Design of Potent Poxvirus Inhibitors of the Heterodimeric Processivity Factor Required for Viral Replication
摘要:
Smallpox constitutes a major bioterrorism threat, which underscores the need to develop antiviral drugs for rapid response in the event of an attack. Viral processivity factors are attractive drug targets in being both specific and essential for their cognate DNA polymerases to synthesize extended strands of DNA. An in silico model of the vacinnia virus processivity factor, comprised of the A20 and D4 heterocomplex, was constructed and used for lead optimization of an indole-based scaffold identified earlier from a high-throughput screening. On the basis of this model, a new class of potent antivirals against vaccinia virus was designed and synthesized, of which two (24a and 24b) exhibited superior improvement over the parent scaffold (IC50 = 42 and 46 vs 82000 nM, respectively). The ability of 24a to suppress vaccinia DNA synthesis is supported by the inhibition of late viral gene expression, as well as by the diminished incorporation of bromodeoxyuridine into viral replication factories.
Design of Potent Poxvirus Inhibitors of the Heterodimeric Processivity Factor Required for Viral Replication
摘要:
Smallpox constitutes a major bioterrorism threat, which underscores the need to develop antiviral drugs for rapid response in the event of an attack. Viral processivity factors are attractive drug targets in being both specific and essential for their cognate DNA polymerases to synthesize extended strands of DNA. An in silico model of the vacinnia virus processivity factor, comprised of the A20 and D4 heterocomplex, was constructed and used for lead optimization of an indole-based scaffold identified earlier from a high-throughput screening. On the basis of this model, a new class of potent antivirals against vaccinia virus was designed and synthesized, of which two (24a and 24b) exhibited superior improvement over the parent scaffold (IC50 = 42 and 46 vs 82000 nM, respectively). The ability of 24a to suppress vaccinia DNA synthesis is supported by the inhibition of late viral gene expression, as well as by the diminished incorporation of bromodeoxyuridine into viral replication factories.
申请人:The Trustees of the University of Pennsylvania
公开号:US09233921B2
公开(公告)日:2016-01-12
This invention provides compounds of formulas (I), (II), (III), and (IV) as defined in the specification, and pharmaceutical compositions comprising the same, and methods of inhibiting, treating, or abrogating a poxvirus infection in a subject using the compounds or compositions.
Palladium-Catalyzed Intermolecular Dehydrogenative C-2 Pentenylation of Indoles with 2-Methyl-2-butene
作者:Guo-Qiang Zhang、Xiao-Xuan Wu、Bao-Yin Zhao、Meng-Yue Wang、Hong-Xia Zhang、Yong-Qiang Wang
DOI:10.1021/acs.orglett.4c00803
日期:——
natural products. Herein we report an unprecedented unusual C5 functionalization of indole regioselectively at the C-2-position enabled by a (2-pyridyl)sulfonyl-directing palladium-catalyzed dehydrogenative strategy with a bulk chemical 2-methyl-2-butene as a C5 source. Compared to typical C5 functionalization using pentenyl alcohols, carbonates, borates, or halides as the C5 source, the protocol not
五碳 (C 5 ) 单元是构成多种天然产品的基本构件。在此,我们报道了一种前所未有的不寻常的吲哚在 C-2 位的区域选择性 C 5官能化,这是通过 (2-吡啶基)磺酰基导向的钯催化脱氢策略以大宗化学品 2-甲基-2-丁烯作为 C 5实现的。来源。与典型的使用戊烯醇、碳酸酯、硼酸酯或卤化物作为C 5源的C 5官能化相比,该方案不仅具有低成本优势,而且具有原子和步骤经济性。