Two New Resveratrol (=5-[(1E)-2-(4-Hydroxyphenyl)ethenyl]benzene-1,3-diol) Tetramers with a Tetrahydrofuran Ring fromDipterocarpus grandiflorus
| Autor: | Ryuichi Sawa, Jin Murata, Ken-ichi Nakaya, Munekazu Iinuma, Yoshikazu Takahashi, Toshiyuki Tanaka, Tetsuro Ito, Dedy Darnaedi |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
biology
Chemistry Stereochemistry Organic Chemistry Diol Dipterocarpus grandiflorus Bergenin Resveratrol Ring (chemistry) biology.organism_classification Biochemistry Catalysis Inorganic Chemistry chemistry.chemical_compound Drug Discovery Physical and Theoretical Chemistry Benzene Two-dimensional nuclear magnetic resonance spectroscopy Tetrahydrofuran |
| Zdroj: | Helvetica Chimica Acta. 87:479-495 |
| ISSN: | 1522-2675 0018-019X |
| DOI: | 10.1002/hlca.200490046 |
| Popis: | Two new stilbene tetramers, grandiphenols A (1) and B (2), along with ten known stilbene oligomers and bergenin were isolated from the stem of Dipterocarpus grandiflorus. The structures of 1 and 2 composed of four resveratrol (=5-[(1E)-2-(4-hydroxyphenyl)ethenyl]benzene-1,3-diol) units had eight asymmetric C-atoms in the partial structures of a tetrahydrofuran and two dihydrobenzofuran moieties. Detailed spectroscopic analyses, especially HMBC and NOESY experiments, allowed to differentiate the configurations of 1 and 2. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text