نتایج جستجو برای: 2’-hydroxy chalcone
تعداد نتایج: 2541048 فیلتر نتایج به سال:
Two new prenylchalcones, xanthohumol C and D, together with two known prenylchalcone derivatives, xanthohumol (1) and 5''-(2''-hydroxyisopropyl)-dihydrofurano-[2'',3''-b]-4,4'-dihydroxy-6'-methoxy-chalcone (4) were isolated and identified from the hops of Humulus lupulus L. The structures of xanhohumol C and D were elucidated as 5''-hydroxy-6'',6''-dimethyl-dihydropyrano-[2'',3''-b]-4,4'-dihydr...
Antifungal activity of 2-hydroxy 4,4'6'trimethoxy chalcone individually was tested against spore germination of ten fungi of different genera. Efficacy of the chemical was also tested against conidial germination and other growth parameters of Erysiphe pisi on excised pea leaves. 2-Hydroxy 4,4'6'trimethoxy chalcone inhibited spore germination at all the concentrations. Maximum inhibition was ob...
A series of four random copolyesters were synthesized by the polycondensation of a chalcone diol by making use of two diacid chlorides namely terephthaloyl chloride and succinyl chloride. The four chalcone diols involved are (2E)-1,3-bis(4-hydroxyphenyl)prop-2-en-1-one, (2E)-1-(4-hydroxyphenyl)-3-(4-hydroxy-3-methoxyphenyl)-prop-2-en1-one, (2E)-1-(4-hydroxy-3-methoxyphenyl)-3-(4-hydroxyphenyl)-...
Objective(s): Chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. Therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues. Materials and Methods: The reaction of resorcinol with 3-chloropropionic acid in the presence of CF3SO3H was a...
Flavonoids tricin, iso-orientin, vanillin, iso-vitexin, apigenin, 8-hydroxy flavones, 4’-hydroxy chalcone have been isolated from leaves of early stage triticum aestivum. Their quantitative analysis has been done through elemental and spectral analysis.
Silybum marianum is a medicinal plant used widely for treating liver diseases. The silymarin, a mixture of three flavolignan isomers namely silybin (1), silydianin (2), and silychristin (3) is an active constituent of the plant. However, silybin containing 1, 4-dioxane ring is the most potent antihepatotoxic agent. In contrast, other isomers do not possess 1, 4-dioxane ring, and thus do not exh...
Pongamia pinnata (Leguminosae) is widely distributed along southeastern Asia to the west Pacific and north Australia. All parts of the plant have been used as crude drug for the treatment of tumors, piles, skin diseases, wounds, ulcers, etc. [1]. Extracts of the plant possess significant anti-diarrhoeal, anti-fungal, anti-plasmodial, anti-ulcerogenic, anti-inflammatory, analgesic activities [2 ...
objective(s): chalcones and their rigid analogues represent an important class of small molecules having anticancer activities. therefore, in this study the synthesis and cytotoxic activity of new 3-benzylidenchroman-4-ones were described as rigid chalcone analogues. materials and methods: the reaction of resorcinol with 3-chloropropionic acid in the presence of cf3so3h was afforded correspon...
در این کار پژوهش بیشتر سنتز ترکیبهای مختلف سه حلقه ای فنل با یک نوع هالوژن و هالوژنهای مختلف و کندن برم از آنها موردنظر است و مشتقهای مختلف از این نوع ترکیبات که در زیر شرح داده شده است سنتز گردیده است . علاوه براین از روشهای سنتزی برای تائید ساختمان ترکیبهای سه حلقه ای استفاده شده است . همچنین سنتز این ترکیبها امکان میدهد که خواص بیولوژیکی و شیمیائی آنها با ترکیبات مشابه دوحلقه ای و چهارحلقه ا...
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