Intramolecular [3+2] nitrile oxide cycloaddition: synthesis of tetrahydroisoxazoloindazoles
作者:Kyung-Ho Park、Will J Marshall
DOI:10.1016/j.tetlet.2004.04.153
日期:2004.6
Novel tetrahydroisoxazoloindazoles were synthesized from substituted 1,3-diketones by employing intramolecular [3+2] nitrileoxidecycloaddition [INOC] reaction to alkene as the key step.
Ru-Catalyzed Chemo- and Enantioselective Hydrogenation of β-Diketones Assisted by the Neighboring Heteroatoms
作者:Wanfang Li、Bin Lu、Xiaomin Xie、Zhaoguo Zhang
DOI:10.1021/acs.orglett.9b01829
日期:2019.7.19
A highly chemo- and enantioselectivehydrogenation of β-diketones was achieved by using [Ru(benzene)(S)-SunPhosCl]Cl for consistency in THF. The neighboring heteroatoms played important roles in guaranteeing the reactivity and controlling the chemoselectivity. These results suggested a potential approach for the clean and facile synthesis of functionalized chiral β-hydroxy ketones, which could otherwise
Acetylenic 1,5-diarylpyrazoles as antiinflammatory agents
申请人:Ortho Pharmaceutical, Corp.
公开号:US05925769A1
公开(公告)日:1999-07-20
Compounds of Formula I ##STR1## wherein, R.sub.1 through R.sub.7 are described herein. These compounds inhibit the production of arachidonic acid products associated with 5-lipoxygenase and cyclooxygenase and are useful in the treatment of inflammatory disorders.