Rotational isomerism of a resveratrol tetramer, shoreaketone, in Shorea uliginosa

Autor:	Tetsuro Ito, Miyuki Furusawa, Munekazu Iinuma, Yoshikazu Takahashi, Toshiyuki Tanaka, Ibrahim Iliya, Soedarsono Riswan, Yumiko Kubota, Ken-ichi Nakaya, Ryuichi Sawa
Rok vydání:	2005
Předmět:	Dipterocarpaceae biology Stereochemistry Organic Chemistry Resveratrol biology.organism_classification Ring (chemistry) Biochemistry Carbonyl group NMR spectra database chemistry.chemical_compound chemistry Tetramer Drug Discovery Shorea uliginosa Conformational isomerism
Zdroj:	Tetrahedron Letters. 46:3111-3114
ISSN:	0040-4039
DOI:	10.1016/j.tetlet.2005.02.165
Popis:	A new resveratrol tetramer, shoreaketone, was isolated from the stem bark of Shorea uliginosa (Dipterocarpaceae). The structure and the relative configuration were confirmed on the basis of 1D- and 2D-NMR spectral data. The structure has a novel framework of fused heptacyclic ring system including an α,β-unsaturated carbonyl group. In NMR spectra, shoreaketone is observed as two different conformers due to rotational isomerism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::578b954df498311fc8a141269f5e239e https://doi.org/10.1016/j.tetlet.2005.02.165 Zobrazit plný text záznamu Full Text from ScienceDirect