1.
Phytochemistry
; 54(8): 975-8, 2000 Aug.
Article
in English
| MEDLINE
| ID: mdl-11014300
ABSTRACT
Investigations of the stem and root bark of Myrica arborea (Myricaceae) have yielded two novel diarylheptanoids, myricarborin and 11-O-beta-D-xylopyranosylmyricanol along with the known myricanol and 5-O-beta-D-glucopyranosylmyricanol. The structures of the novel compounds were determined by spectroscopic methods.
Subject(s)
Heptanes/isolation & purification , Rosales/chemistry , Heptanes/chemistry , Molecular Structure , Spectrum Analysis
2.
J Nat Prod
; 62(10): 1432-4, 1999 Oct.
Article
in English
| MEDLINE
| ID: mdl-10543910
ABSTRACT
A new Diels-Alder-type adduct, dorstenone (1), was isolated from Dorstenia barteri together with three known flavonoids, 4,2', 4'-trihydoxy-3'-prenylchalcone; 4,2',4'-trihydoxy-3, 3'-diprenylchalcone; and 5,7,4'-trihydoxy-8-prenylflavone. The structure of 1 was elucidated using a combination of highfield NMR techniques, particularly, gradient-enhanced HMQC and HMBC.