N-Fused Indolines through Non-Carbonyl-Stabilized Rhodium Carbenoid CH Insertion of N-Aziridinyl Imines
作者:Stuart J. Mahoney、Eric Fillion
DOI:10.1002/chem.201103155
日期:2012.1.2
Under rhodium catalysis, N‐aziridinyl imines provided access to N‐fused indolines through non‐carbonyl‐stabilized rhodium carbenoid CHinsertion. The utility of this methodology for the synthesis of architecturally complex heterocycles was further demonstrated by an expedient total synthesis of (±)‐cryptaustoline (see scheme).
Dihydroisoquinoline derivatives and their analogues, prepared by the Bischler-Napieralsky reaction, were converted to their indole-fused derivatives. Scope and limitations of the palladium-catalyzed reaction, proceeding through the tautomeric enamine forms of these compounds, were studied and the process was extended to the preparation of racemic mangochinine.
Synthesis and Antitumor Activity of Methoxy-indolo[2,1-a]isoquinolines
作者:Reinhard Ambros、Silvia Von Angerer、Wolfgang Wiegrebe
DOI:10.1002/ardp.19883210811
日期:——
Methoxy‐indolo[2,1‐a]isoquinolines 8a‐f and their dihydroderivatives 7a‐f were synthesized by Bischler‐Napieralski reaction of the (bromomethoxyphenyl)‐[2‐(methoxyphenyl)‐ethyl]acetamides 4a‐f, reduction, subsequent cyclization and dehydrogenation. They were tested for cytostatic activity in vitro using P388 D1, leukemia and MDA MB 231 mammary tumor cells. The trimethoxy‐5,6‐dihydroindoloisoquinoline
New Synthetic Applications of Phenylacetylphenylacetic Acids: A Divergent Synthesis of Benzo[a]carbazoles and Indolo[2,1-a]isoquinolines
作者:Ramón J. Estévez、Jacobo Cruces、Juan C. Estévez、Luis Castedo
DOI:10.3987/com-99-8838
日期:——
A direct synthesis of 5,6-dihydroindolo[2,1-a]isoquinolines that exhibit immunosuppressive activity
作者:George A. Kraus、Vinayak Gupta、Marian Kohut、Navrozedeep Singh
DOI:10.1016/j.bmcl.2009.08.057
日期:2009.10
Dihydroindolo[2,1-a]isoquinolines were synthesized from tetrahydroisoquinolines and alpha-fluoroaldehydes by a novel two-step procedure. These compounds exhibited significant immunosuppressive activity against IL-2, IL-10 and IFN-gamma. (C) 2009 Elsevier Ltd. All rights reserved.