Results 171 to 180 of about 13,213 (206)

Prenylated flavonoids of Erythrina lysistemon grown in Egypt

Phytochemistry, 2002
Three prenylated flavonoid derivatives; 5,7,4'-trihydroxy-8-(3"'-methylbut-2"'-enyl)-6-(2"-hydroxy-3"-methylbut-3"enyl) isoflavone (isoerysenegalensein E), 5,7,2'-trihydroxy-4'-methoxy-5'-(3"-methylbut-2"-enyl) isoflavanone (lysisteisoflavanone), 5, 4'-dihydroxy-6-(3"'-methylbut-2"'-enyl)-2"-hydroxyisopropyl dihydrofurano [4",5":8,7] isoflavone ...
Sawsan, el-Masry, Masouda E, Amer, Maged S, Abdel-Kader, Hala H, Zaatout   +3 more
openaire   +2 more sources

Cytotoxic prenylated bibenzyls and flavonoids from Macaranga kurzii

Fitoterapia, 2014
One unique prenylated bibenzyl, kurzphenol A (1), two new prenylated flavonoids, kurzphenols B and C (2 and 3), as well as fourteen known compounds (4-17) were isolated from the twigs of Macaranga kurzii. Compound 1 was the first example of prenylated bibenzyl which possesses a benzofuran ring. All the known compounds were isolated from M.
Da-Song, Yang, Jian-Guo, Wei, Wei-Bing, Peng, Shuang-Mei, Wang, Chen, Sun, Yong-Ping, Yang, Ke-Chun, Liu, Xiao-Li, Li   +7 more
openaire   +2 more sources

Anti-HIV Prenylated Flavonoids from Monotes africanus

Journal of Natural Products, 2001
Six flavonoids, among them a new dihydroflavonol, 6,8-diprenylaromadendrin (1), and the flavonol 6,8-diprenylkaempferol (3), have been isolated from the organic extract of Monotes africanus. The isolated compounds containing a 5,7-dihydroxy-6,8-diprenyl system in the A ring of the flavonoid (1, 3, and 6) exhibited HIV-inhibitory activity in the XTT ...
K M, Meragelman, T C, McKee, M R, Boyd
openaire   +2 more sources

Prenylated flavonoids in the roots of yellow lupin

Phytochemistry, 1994
A further investigation of the methanol-soluble compounds in yellow lupin roots has revealed a new diprenylchromone, a new coumaronochromone (lupinalbin H), a new isoflavone 5,7,4'-trihydroxy-8,3'-di-(3,3-dimethylally)isoflavone (isolupalbigenin), and some complex flavanones.
S, Tahara, Y, Katagiri, J L, Ingham, J, Mizutani   +3 more
openaire   +2 more sources

(-)-Sigmoidin E: A New Prenylated Flavonoid from Erythrina sigmoidea

Journal of Natural Products, 1988
Sigmoidin F, a new prenylated flavanone, as well as abyssinone IV and 5,7,4'-trihydroxy-3'-methoxy-5'-(1"-prenyl) flavonone have been isolated from the stem and bark of Erythrina sigmoidea. The structure of 1 has been confirmed by a combination of 1H-nmr and other spectroscopic techniques.
R, Promsattha, M S, Tempesta, Z T, Fomum, J T, Mbafor   +3 more
openaire   +3 more sources

Prenylated flavonoids from seeds of Calopogonium mucunoides

Phytochemistry, 1982
Abstract The seeds of Calopogonium mucunoides furnished 7- O -γ,γ-dimethylallyl-8-methoxy-3′,4′-dioxymethylene-isoflavone, 7- O -γ,γ-dimethylallyl-3′-hydroxy-4′-methoxyisoflavone, 7- O -γ,γ-dimethylallyl-3′,4′-dimethoxyisoflavone and 2 S -di[6′',6′'-dimethylpyrano (2′',3′':7,8;2′',3′':4′,3′)]-flavanone whose structures were established by ...
Marilia O.daS. Pereira, Edna C. Fantine, José R. de Sousa   +2 more
openaire   +1 more source

Diterpenylated and prenylated flavonoids from Macaranga denticulata

Tetrahedron, 2002
Abstract An O-methylated analogue of macarangin ( 1 ) and denticulaflavonol ( 2 ) which possesses a diterpene substituent have been isolated along with other compounds from the leaves of Macaranga denticulata. Their detailed 1D and 2D spectral analysis are reported. The radical scavenging properties of compounds 3–5 were evaluated.
Somyote Sutthivaiyakit, Sasinee Unganont, Pakawadee Sutthivaiyakit, Apichart Suksamrarn   +3 more
openaire   +1 more source

ChemInform Abstract: Mass Spectrometry of Prenylated Flavonoids

ChemInform, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
M. TAKAYAMA, T. FUKAI, Y. HANO, T. NOMURA   +3 more
openaire   +1 more source

Cytotoxic potential of C-prenylated flavonoids

Phytochemistry Reviews, 2013
Prenylated flavonoids are a large group of compounds that combine a flavonoid skeleton with a lipophilic prenyl side-chain. The-side chain may be modified, especially by oxidation, and this variation contributes many structural possibilities. Combining the flavonoid skeleton with a lipophilicity of the prenyl side-chain gives the resultant great ...
openaire   +1 more source

ChemInform Abstract: Prenylated Flavonoids from Tephrosia apollinea.

ChemInform, 2008
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Mohamed H. Abd El‐Razek, Abou El‐Hamd H. Mohamed, Ahmed A. Ahmed   +2 more
openaire   +1 more source