Total synthesis of the pyranocoumaronochromone lupinalbin H
摘要:
The pyranocoumaronochromone lupinalbin H was synthesized in three major steps, which involved preparation of 2'-hydroxygenistein by the Suzuki-Miyaura reaction, followed by oxidative cyclodehydrogenation into lupinalbin A. The final step was the regiospecific introduction of the dimethylpyran moiety to ring A of lupinalbin A via an aldol-type condensation with 3-methyl-2-butenal and 6 pi-electrocyclization. (C) 2011 Elsevier Ltd. All rights reserved.
Total synthesis of the pyranocoumaronochromone lupinalbin H
摘要:
The pyranocoumaronochromone lupinalbin H was synthesized in three major steps, which involved preparation of 2'-hydroxygenistein by the Suzuki-Miyaura reaction, followed by oxidative cyclodehydrogenation into lupinalbin A. The final step was the regiospecific introduction of the dimethylpyran moiety to ring A of lupinalbin A via an aldol-type condensation with 3-methyl-2-butenal and 6 pi-electrocyclization. (C) 2011 Elsevier Ltd. All rights reserved.
Enantioselective Total Synthesis of Natural Isoflavans: Asymmetric Transfer Hydrogenation/Deoxygenation of Isoflavanones with Dynamic Kinetic Resolution
作者:Anton Keßberg、Tilo Lübken、Peter Metz
DOI:10.1021/acs.orglett.8b01034
日期:2018.5.18
A concise and highly enantioselectivesynthesis of structurally diverse isoflavans from a single chromone is described. The key transformation is a single-step conversion of racemic isoflavanones into virtually enantiopure isoflavans by domino asymmetrictransferhydrogenation/deoxygenation with dynamic kinetic resolution.
We report a new series of hepatitis C virus NS5B RNA polymerase inhibitors containing a conformationallyconstrained tetracyclic scaffold. SAR studies led to the identification of 6,7-dihydro-5H-benzo[5,6][1,4]diazepino[7,1-a]indoles (19 and 20) bearing a basic pendent group with high biochemical and cellular potencies. These compounds displayed a very small shift in cellular potency when the replicon
Tetracyclic fused heterocyclic compound and use thereof as HCV polymerase inhibitor
申请人:Oka Takahiro
公开号:US20070049593A1
公开(公告)日:2007-03-01
The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I]
wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.
TETRACYCLIC FUSED HETEROCYCLIC COMPOUND AND USE THEREOF AS HCV POLYMERASE INHIBITOR
申请人:Oka Takahiro
公开号:US20120070409A1
公开(公告)日:2012-03-22
The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I]
wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.