EAT-KAURANE DITERPENOIDS FROM BACCHARIS LEPTOPHYLLA
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Rev. Bol. Quim
Abstract
Un diterpenoide conocido tipo ent-kaurano, ewf-19-al-17,16P-dihidroxikaurano (1), junto con un diterpenoide nuevo, ewf-3p,16p,19-trihidroxikaurano (2), llamado leptophyllin, fueron aislados de las partes aéreas de Baccharis leptophylla. Sus estructuras fueron establecidas en base a técnicas de análisis espectroscópico de RMN. En base a este estudio los datos de RMN X H y 13C del compuesto (1) fueron completados mediante técnicas de RMN 2D.
A known ent-kaurane diterpenoid, ewf-19-al-17,16P-dihydroxykaurane (1), together with the new one, ent-3<img width=9 height=14 src="../img/a07_figura01.gif">, 16<img width=9 height=14 src="../img/a07_figura01.gif">, 19-trihydroxykaurane (2), called leptophyllin, were isolated from aerial parts of Baccharis leptophylla. Their structures were established on the basis of NMR spectroscopic analysis. Based on this study the ¹H and 13C NMR spectral data of compound (1) were completed by means of 2D NMR techniques.
A known ent-kaurane diterpenoid, ewf-19-al-17,16P-dihydroxykaurane (1), together with the new one, ent-3<img width=9 height=14 src="../img/a07_figura01.gif">, 16<img width=9 height=14 src="../img/a07_figura01.gif">, 19-trihydroxykaurane (2), called leptophyllin, were isolated from aerial parts of Baccharis leptophylla. Their structures were established on the basis of NMR spectroscopic analysis. Based on this study the ¹H and 13C NMR spectral data of compound (1) were completed by means of 2D NMR techniques.
Description
Vol. 30, No. 1
Keywords
Baccharis leptophylla, Bolivian medicinal plañís, ent-kaurane diterpenoids, leptophyllin, ent-3<img width=10 height=13 src="../img/a07_figura02.gif">, 16<img width=10 height=13 src="../img/a07_figura02.gif">, 19-trihydroxykaurane, ent-19-al-17, 16<img width=10 height=13 src="../img/a07_figura02.gif">-dihydroxykaurane
