نتایج جستجو برای: keywords unimolecuar reaction of ethyl acetate
تعداد نتایج: 21534406 فیلتر نتایج به سال:
Background and objectives: Cuminum cyminum from Apiaceae family is a common medicinal plant. The fruits of this plant are the second most popular spice after Piper nigrum in the world. It is used in cooking as flavoring and also it has been used for treatment of toothache, epilepsy, diarrhea,emphysema and gastrointestinal problems in Iranian traditional medici...
Astragalus is a well-known genus in Leguminosae family that represented more than 800 species growing in Iran. Nevertheless, there are a few reports on Astragalus plants endemic to Iran. The roots of Astragalus plants are rich in saponins, flavonoids and polysaccharides that possess various pharmacological activities. In present study, Chemical components, antioxidant and antibacterial activity...
Astragalus is a well-known genus in Leguminosae family that represented more than 800 species growing in Iran. Nevertheless, there are a few reports on Astragalus plants endemic to Iran. The roots of Astragalus plants are rich in saponins, flavonoids and polysaccharides that possess various pharmacological activities. In present study, Chemical components, antioxidant and antibacterial activity...
Indian jujube leaves (Ziziphus mauritiana Lamk) have various potential biological activity. Previous studies proven that ethanol extracted from (Z. had analgesic This study aimed to determine the total flavonoid content and activity of ethyl acetate fraction extract. Tested was prepared by maceration using as solvent followed fractionation acetate. Identification active compounds performed colo...
The tripeptide Z-GlyPheLeuNH2 was continuously synthesized in a high yield from three amino acid derivatives, Z-Gly, PheOMe, and LeuNH2, by immobilized thermolysin (IMT) and immobilized alpha-chymotrypsin (IMC) in an organic solvent, ethyl acetate. The optimal conditions for the synthesis of Z-GlyPheOMe were established theoretically. The yield of Z-GlyPheOMe with IMT in ethyl acetate saturated...
the present study was carried on to investigate the use of face-keeping strategies in reaction to complaints by male and female in two different cultures, persian and american english. to see if apology strategies are affected by cultural, contextual preferences and gender of interlocutors in two distinct languages of persian and american english. the hypotheses to be tested were 1) ifids, acce...
Single crystals of the title compound, C(10)H(13)OS(+)·Br(-), were obtained from ethyl acetate/ethyl ether after reaction of acetophenone with hydro-bromic acid and dimethyl-sulfoxide. The carbonyl group is almost coplanar with the neighbouring phenyl ring [O-C-C-C = 178.9 (2)°]. The sulfanium group shows a trigonal-pyramidal geometry at the S atom. The crystal structure is stabil-ized by C-H⋯B...
The aim of this study was to assay the antibacterial activity of Scenedesmus obtusus on some pathogenic bacteria. Microalgae S. obtusus were obtained from Algae Bank of Iran, and the methanol, ethyl acetate, chloroform and n-hexane extract of the microalgae were prepared using the maceration method. Bacterial strains were cultured in a solid culture medium, and antibacterial activity of the the...
in this project, some new polyaspartimides, (pas)s, have been synthesized form michael addition reaction between new synthetic bismaleimide (bmi) and some aromatic diamines. a characteristic property of this polyaspartimides is a pendent carboxylic group, which introduced to these polymers from new bismaleimide. bismaleimides (bmi) is one of the interesting compounds, which can be self-polymeri...
Objective: Mentha longifolia L. Hudson has been used in folk medicine for various purposes especially for its anti-inflammatory effects. Lymphocytes play a central role in development of inflammation. In the present study, we investigated the immunomodulatory effects of different extracts of M. longifolia on human peripheral blood lymphocytes (PBLs), as main players in development of inflammati...
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