Studies on the Regioselectivity of the Cyclization of Tryptophanol-Derived Oxazolopiperidone Lactams
Cyclization of the lactam carbonyl on the indole ring in tryptophanol-derived oxazolopiperidone lactams 2 and 6, under the classical POCl3-promoted Bischler-Napieralski conditions and under neutral conditions via the corresponding thiolactam, has been studied. Whereas tricyclic lactam 2 only leads t...
| Autores: | , , , , , |
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| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2013 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/171749 |
| Acesso em linha: | https://hdl.handle.net/2445/171749 |
| Access Level: | acceso abierto |
| Palavra-chave: | Lactames Triptòfan Compostos heterocíclics Síntesi orgànica Lactams Tryptophan Heterocyclic compounds Organic synthesis |
| Resumo: | Cyclization of the lactam carbonyl on the indole ring in tryptophanol-derived oxazolopiperidone lactams 2 and 6, under the classical POCl3-promoted Bischler-Napieralski conditions and under neutral conditions via the corresponding thiolactam, has been studied. Whereas tricyclic lactam 2 only leads to products coming from an α-amidoalkylation process, bicyclic lactam 6 undergoes cyclization on the lactam carbonyl, leading to the expected indolo[2,3-a]quinolizidine derivatives. |
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