Synthesis of the bicyclic welwitindolinone core via an alkylation/cyclization cascade reaction.
Synthesis of the bicyclic welwitindolinone core via an alkylation/cyclization cascade reaction.
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DOI:
10.1021/ol902173g
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发表时间:
2009-11-19
期刊:
影响因子:
5.2
通讯作者:
Shea KJ
中科院分区:
文献类型:
--
作者:
Brailsford JA;Lauchli R;Shea KJ
Synthesis of an advanced welwitindolinone intermediate via an alkylation/cyclization reaction is reported. The key step involves a one pot Lewis acid mediated alkylation of a silylketene aminal with a furan alcohol followed by an intramolecular cyclization. The reaction is stereoselective and takes place at low temperature. The cycloadduct is highly functionalized and contains the welwitindolinone core structure.
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