A highly enantioselectiveaza-Friedel–Craftsreaction of structurally new ketimines with indoles and pyrrole is developed by using a chiral phosphoric acid as the catalyst. This protocol enables the first enantioselective synthesis of isoquinoline-1,3(2H,4H)-dione derivatives in good to excellent yields (up to 99% yield) and excellent enantioselectivities (up to >99% ee).
Rh<sup>II</sup>
-Catalyzed Cycloaddition of α-Diazo Homophthalimides and Nitriles Delivers Oxazolo[5,4-<i>c</i>
]isoquinolin-5(4<i>H</i>
)-one Scaffold
作者:Grigory Kantin、Dmitry Dar'in、Mikhail Krasavin
DOI:10.1002/ejoc.201800955
日期:2018.9.23
The firstexample of 1,3‐oxazole synthesis involving nitrile cycloaddition to an α‐diazocarbonyl moiety incorporated in a heterocyclic system was shown. The resulting oxazolo[5,4‐c]isoquinolin‐5(4H)‐one scaffold represents a hitherto not described structural analog of an important cluster of tricyclic ringsystems for drug design.
显示了第一个1,3-恶唑合成的例子,涉及将腈环加成到杂环系统中的α-重氮羰基部分上。所得的恶唑并[5,4 – c ]异喹啉-5(4 H)-1支架代表了迄今为止尚未描述的用于药物设计的重要三环系统簇的结构类似物。
Buu-Hoi, Bulletin de la Societe Chimique de France, 1945, vol. <5>12, p. 313,317
作者:Buu-Hoi
DOI:——
日期:——
1,3,4(2<i>H</i>)-isoquinolinetrione herbicides: Novel redox mediators of photosystem I
作者:Glynn Mitchell、Eric D. Clarke、Stuart M. Ridley、Daren T. Greenhow、Kevin J. Gillen、Shaheen K. Vohra、Peter Wardman
DOI:10.1002/ps.2780440108
日期:1995.5
AbstractA series of 1,3,4(2H)‐isoquinolinetriones have been found to be fast‐acting post‐emergence herbicides, producing symptoms of desiccation. These redox‐active compounds are very potent stimulators of the light‐dependent consumption of oxygen at photosystem I in isolated chloroplasts. Pulse radiolysis studies on 2‐ethyl‐1,3,4(2H)‐isoquinolinetrione have shown it to have free‐radical properties which could enhance the generation of superoxide radicals in plants. Electrochemical studies further support a redox mediator mode of action for the series. The compounds were found to be unstable towards hydrolysis, and this was considered to be a major factor limiting the overall herbicidal effects. Other parameters, related to uptake and/or translocation, which may limit the full expression of the herbicidal activity of certain compounds, are discussed.
MURTHY A. R. K.; CHAPMAN J. M., JR.; WYRICK S. D.; HALL I. H., PHARM. RES., 3,(1986) N 5, 286-289
作者:MURTHY A. R. K.、 CHAPMAN J. M., JR.、 WYRICK S. D.、 HALL I. H.