Enantioselective spirocyclizations from tryptophanol-derived oxazolopiperidone lactams

Enantioselective spirocyclizations from tryptophanol-derived oxazolopiperidone lactams
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DOI:
10.1021/ol0712327
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发表时间:
2007-07-19
期刊:
影响因子:
5.2
通讯作者:
Bosch, Joan
Bosch, Joan
中科院分区:
化学1区
文献类型:
--
作者:
Amat, Mercedes;Santos, Maria M. M.;Bosch, Joan

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报道了一条合成对映体纯螺[吲哚-3,3 '-中氮茚]的简单路线。关键步骤是在Et 3SiH存在下,刘易斯酸促进的N-α-对甲苯磺酰基乙醇衍生的恶唑哌啶酮内酰胺的环化。
A straightforward synthetic route to enantiopure spiro[indole-3,3'-indolizidines] is reported. The key step is a Lewis acid promoted cyclization of a N-a-tosyltryptophanol-derived oxazolopiperidone lactam in the presence of Et3SiH.