1.
Phytochemistry
; 63(8): 913-7, 2003 Aug.
Article
in English
| MEDLINE
| ID: mdl-12895539
ABSTRACT
Two oligostilbenes, cis- and trans-diptoindonesin B, have been isolated from the tree bark of Dryobalanops oblongifolia (Dipterocarpaceae). The structures and relative configurations of both compounds were determined on the basis of spectroscopic evidence, including 2D-NMR spectroscopic analysis.
Subject(s)
Ericales/chemistry , Stilbenes/chemistry , Isomerism , Magnetic Resonance Spectroscopy , Molecular Structure , Plant Bark/chemistry , Stilbenes/isolation & purification
2.
Fitoterapia
; 73(6): 501-7, 2002 Oct.
Article
in English
| MEDLINE
| ID: mdl-12385874
ABSTRACT
A new C-glucoside of epsilon-viniferin, named diptoindonesin A (1), was isolated from the ethyl acetate extract of the tree bark of Shorea seminis, together with the known stilbene oligomers (-)-ampelopsin A (2), (-)-alpha-viniferin (3), and (-)-hopeaphenol (4). The structure of 1 was determined from spectroscopic evidence.
