نتایج جستجو برای: trans α
تعداد نتایج: 229033 فیلتر نتایج به سال:
Cyclopenta-, benzo-, and cyclohepta[b]-annulated azepane scaffolds were prepared in two steps from optically active cyclic α-allyl-β-oxoesters. The first step was ruthenium-catalyzed olefin cross metathesis with acrylonitrile. second palladium-catalyzed dihydrogenation which consists of three consecutive processes: hydrogenation the C−C double C−N triple bonds followed by reductive amination vi...
background & aim: increasing of drug resistances and more attention to the hazards of side effects of synthetic drugs has caused extensive researches on medicinal plant resources. the aim of this study was to determination of the chemical composition of native silybum marianum and foeniculum vulgare extractions in ardabil, iran; and investigation of their anticancer effect on liver cancer cell ...
مقدمه: zingiber officinale، جزء گیاهان دارویی مهم می باشد که از دیرباز در زندگی انسان ها کاربردهای غذایی و دارویی مختلف داشته است. با توجه به اینکه از اسانس زنجبیل اثرات بیولوژیکی مختلفی گزارش شده است. هدف: ارزیابی ترکیبات شیمیایی موجود در اسانس دو گونه زنجبیل چینی و هندی به منظور شناسایی ترکیبات فعال بیولوژیکی آنها مورد مطالعه کیفی و کمی قرار گرفت. روش بررسی: فرآیند اسانس گیری از هر کدام از گی...
Background: Microtubules (MT) are important components of cell cytoskeleton and play key roles in cell motility mitosis and meiosis. They are also the targets of several anticancer agents which indicating their importance in maintaining cell viability. Microtubular reorganization contributing to apoptotic morphology occurs in normal and neoplastic cells undergoing apoptosis induced by cytotoxic...
Myoporum sandwicense A. Gray (naio) is one of the characteristic trees Hawaiian montane–subalpine mesic forests. In this study, lab-distilled oils M. leaves, wood, and twigs growing on island Hawaii, as well industrially produced wood oils, were characterized by gas chromatography–mass spectrometry (GC-MS). The screened for antimicrobial activity. leaf essential oil was rich in β-caryophyllene ...
Essential oil from aerial parts of Artemisia vulgaris L., was obtained by hydro-distillation to produce oil in the yield of 0.25% (w/w). The oil was analyzed by capillary gas chromatography, using mass spectrometric detection. The amount of the samples injected by nano scale included were 1.0 nL (diluted 1.0 μL of sample in 1000 ml of n-pentane, v/v). Twenty three bioactive and flavour molecule...
introduction & aim: plant growth regulators (pgr) have same effect as natural plant's hormones and can change the main components in plant samples. chaerophyllum aureum l. is related to apiaceae family. experimental: in this paper the qualitative and quantitative composition of the volatile oils of chaerophyllum aureum l. were reported after using different concentrations of iaa and naa ...
(1) Background: This study aimed to investigate the feasibility of using Maackia amurensis branch extract as a cosmetic ingredient with skin-whitening and antiwrinkle effects. (2) Methods: The effect M. was confirmed by investigating α-melanocyte-stimulating hormone (α-MSH)-induced melanin synthesis melanogenic protein expression in B16F1 cells. verified assessing matrix metalloproteinase (MMP)...
the genus tanacetum l. is one of the most important medicinal plant that contains 28 species in iran, 12 of them are endemics. this paper reports the essential oil composition of tanacetum hololeucum (bornm.) podlech; tanacetum kotschyi (boiss.) grierson, growing wild in iran. plant flowers were collected from different zones of dizin in north of iran. all samples were hydro-distilled (clevenge...
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