Diastereoselective synthesis of functionalised carbazoles via a sequential Diels-Alder/ene reaction strategy

被引:26
|
作者
Cowell, Joseph [1 ]
Abualnaja, Matokah [1 ]
Morton, Stephanie [1 ]
Linder, Ruth [1 ]
Buckingham, Faye [1 ]
Waddell, Paul G. [1 ]
Probert, Michael R. [1 ]
Hall, Michael J. [1 ]
机构
[1] Newcastle Univ, Sch Chem, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
基金
英国工程与自然科学研究理事会;
关键词
VITRO ANTIPROLIFERATIVE ACTIVITIES; ENE REACTION; DOMINO REACTIONS; 3-VINYLINDOLES; CARBODIENOPHILES; 2-VINYLINDOLES; STAUROSPORINE; VINYLINDENES; ALKALOIDS; ANALOGS;
D O I
10.1039/c5ra00499c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
An operationally simple one-pot, three-component, diastereoselective synthesis of saturated carbazoles and related pyridazino[3,4-b] indoles, based on two sequential intermolecular pericyclic reactions, is described. The reaction sequence involves an intermolecular Diels-Alder (D-A) reaction of a 3-vinyl-1H-indole, containing an electron withdrawing N-protecting group, with a suitable dienophile. Due to the electron withdrawing nature of the N-protecting group the resultant D-A cycloadducts are sufficiently stabilised to allow for a subsequent in situ diastereospecific intermolecular ene reaction to take place with an added enophile, generating functionalised carbazoles with relative stereocontrol of up to four stereocentres.
引用
收藏
页码:16125 / 16152
页数:28
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