cis,cis-Germacranolides and melampolides from Mikania thapsoides
The aerial parts of Mikania thapsoides afforded six new cis,cis-germacranolide-type sesquitepene lactones (1-6), of which three (1-3) have an unusual 3,4-epoxy function, and also afforded two new melampolides (7 and 8). All compounds have a trans C-8 lactone ring closure. Their structures were eluci...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2003 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/114636 |
| Acesso em linha: | http://hdl.handle.net/11336/114636 |
| Access Level: | Acceso aberto |
| Palavra-chave: | CIS-GERMACRANOLIDES MELAMPOLIDES MIKANIA THAPSOIDES https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Resumo: | The aerial parts of Mikania thapsoides afforded six new cis,cis-germacranolide-type sesquitepene lactones (1-6), of which three (1-3) have an unusual 3,4-epoxy function, and also afforded two new melampolides (7 and 8). All compounds have a trans C-8 lactone ring closure. Their structures were elucidated using 1D and 2D NMR measurements, and the absolute configuration of 1 was determined using the Mosher ester method. |
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