| Literature DB >> 11678671 |
A A Ahmed1, A A Mahmoud, U M Ahmed, A A El-Bassuony, M H Abd El-Razk, P W Pare, J Karchesy.
Abstract
Two new manoyl oxide-alpha-arabinopyranoside diterpenoids, 15-hydroxy-13-epi-manoyl oxide-14-O-alpha-L-arabinopyranoside (tarapacol-14-O-alpha-L-arabinopyranoside) (1) and 15-acetoxy-13-epi-manoyl oxide-14-O-alpha-L-arabinopyranoside (tarapacol-15-acetate-14-O-alpha-L-arabinopyranoside) (2), as well as a new grindelic acid derivative, 19-hydroxygrindelic acid (3), together with five known diterpenoids (tarapacol, tarapacanol A, grindelic acid, methyl grindeloate, 3beta-hydroxygrindelic acid, 4) were isolated from the aerial parts of Grindelia integrifolia. The structures of 1-3 were elucidated by spectral data analysis.Entities:
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Year: 2001 PMID： 11678671 DOI： 10.1021/np010273n
Source DB: PubMed Journal: J Nat Prod ISSN： 0163-3864 Impact factor: 4.050