Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae)
The roots of Croton hirtus (Euphorbiaceae) collected in Paraiso, Cartago (Costa Rica) afforded, in addition to the few known metabolites, 20 new compounds: the bis-nor dolabradane 1, the dolabradanes 2 and 3, the kauranes 4-7, the cyclopropakauranes 8 and 9, the hirtusanes 10-15, the germacradiene e...
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Universidad de Costa Rica
2004
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/14943 |
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RBT149432022-05-30T17:28:15Z Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) Fuentes, J C Jakupovic, J. Murillo, R. croton hirtus euphorbiaceae diterpenes kauranes 3 18-cyclopropakaurane hirtusane sesquiterpenes The roots of Croton hirtus (Euphorbiaceae) collected in Paraiso, Cartago (Costa Rica) afforded, in addition to the few known metabolites, 20 new compounds: the bis-nor dolabradane 1, the dolabradanes 2 and 3, the kauranes 4-7, the cyclopropakauranes 8 and 9, the hirtusanes 10-15, the germacradiene esters 16-18 and the C-25 compound 21, presumably formed by a Diels-Alder reaction between compound 18 and a monoterpene. All structures were elucidated using high field 1D and 2D NMR techniques. MS fragmentation patterns are here reported. The absolute configurations of 4 and 9 were elucidated by using circular dichroism. The separation was performed with modern chromatographic technics. The roots of Croton hirtus (Euphorbiaceae) collected in Paraiso, Cartago (Costa Rica) afforded, in addition to the few known metabolites, 20 new compounds: the bis-nor dolabradane 1, the dolabradanes 2 and 3, the kauranes 4-7, the cyclopropakauranes 8 and 9, the hirtusanes 10-15, the germacradiene esters 16-18 and the C-25 compound 21, presumably formed by a Diels-Alder reaction between compound 18 and a monoterpene. All structures were elucidated using high field 1D and 2D NMR techniques. MS fragmentation patterns are here reported. The absolute configurations of 4 and 9 were elucidated by using circular dichroism. The separation was performed with modern chromatographic technics. Universidad de Costa Rica 2004-03-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/14943 Revista de Biología Tropical; Vol. 52 No. 1 (2004): Volume 52 – Regular number 1 – March 2004; 269–285 Revista de Biología Tropical; Vol. 52 Núm. 1 (2004): Volumen 52 – Número regular 1 – Marzo 2004; 269–285 Revista Biología Tropical; Vol. 52 N.º 1 (2004): Volume 52 – Regular number 1 – March 2004; 269–285 2215-2075 0034-7744 10.15517/rbt.v52i1 spa https://revistas.ucr.ac.cr/index.php/rbt/article/view/14943/14209 Copyright (c) 2004 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
spa |
| format |
Online |
| author |
Fuentes, J C Jakupovic, J. Murillo, R. |
| spellingShingle |
Fuentes, J C Jakupovic, J. Murillo, R. Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| author_facet |
Fuentes, J C Jakupovic, J. Murillo, R. |
| author_sort |
Fuentes, J C |
| description |
The roots of Croton hirtus (Euphorbiaceae) collected in Paraiso, Cartago (Costa Rica) afforded, in addition to the few known metabolites, 20 new compounds: the bis-nor dolabradane 1, the dolabradanes 2 and 3, the kauranes 4-7, the cyclopropakauranes 8 and 9, the hirtusanes 10-15, the germacradiene esters 16-18 and the C-25 compound 21, presumably formed by a Diels-Alder reaction between compound 18 and a monoterpene. All structures were elucidated using high field 1D and 2D NMR techniques. MS fragmentation patterns are here reported. The absolute configurations of 4 and 9 were elucidated by using circular dichroism. The separation was performed with modern chromatographic technics. |
| title |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| title_short |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| title_full |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| title_fullStr |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| title_full_unstemmed |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| title_sort |
diterpenos y otros constituyentes de croton hirtus (euphorbiaceae) |
| title_alt |
Diterpenos y otros constituyentes de Croton hirtus (Euphorbiaceae) |
| publisher |
Universidad de Costa Rica |
| publishDate |
2004 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/14943 |
| work_keys_str_mv |
AT fuentesjc diterpenosyotrosconstituyentesdecrotonhirtuseuphorbiaceae AT jakupovicj diterpenosyotrosconstituyentesdecrotonhirtuseuphorbiaceae AT murillor diterpenosyotrosconstituyentesdecrotonhirtuseuphorbiaceae |
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1810114671021129728 |