نتایج جستجو برای: nrbr compound

تعداد نتایج: 127863  

Journal: :Chemical communications 2013
Arvind K Yadav Vishnu P Srivastava Lal Dhar S Yadav

An efficient and operationally simple synthesis of fluoroalkanes by deoxygenative hydrofluorination of carbonyl compounds via their tosylhydrazone surrogates is reported. The reaction can be carried out in a one-pot procedure directly from carbonyl compounds.

Journal: :Journal of molecular graphics & modelling 2004
Carla J Churchwell Mark D Rintoul Shawn Martin Donald P Visco Archana Kotu Richard S Larson Laurel O Sillerud David C Brown Jean-Loup Faulon

We present a methodology for solving the inverse-quantitative structure-activity relationship (QSAR) problem using the molecular descriptor called signature. This methodology is detailed in four parts. First, we create a QSAR equation that correlates the occurrence of a signature to the activity values using a stepwise multilinear regression technique. Second, we construct constraint equations,...

Journal: :Organic & biomolecular chemistry 2014
Ivan Franzoni Clément Mazet

Recent advances in the palladium-catalyzed remote functionalization of carbonyl derivatives are highlighted in this review. The structure of the article is based on the three strategies that have emerged in recent years as the most viable tactics to construct C(sp(3))-C, C(sp(3))-N or C(sp(3))-O bonds at a distance of at least three carbon atoms from the carbonyl functionality. The specific asp...

Journal: :journal of agricultural science and technology 2013
f. rezaei arjomand a. a. enayati a. h. lohrasebi s. r. ghaffarian anbaran s. j. hashemi

in production of tissue paper, the adhesion of a liquid adhesive creping aid, compound polymer, as creping aids on the yankee dryer surface was investigated. a compound polymer was prepared based on mixing ratio of poly (amideamine)-epichlorohydrin resin (pae) as an adhesive agent, polyvinyl alcohol (pva) as a modifier agent, and cationic fatty acid (cfa) and ethylene glycol (eg) as release age...

Journal: :iranian journal of pharmaceutical research 0
vijay alakshmi department of pharmacognosy, school of pharmaceutical sciences, vels university, pallavaram, chennai-117, tamil nadu, india. ravi chandiran department of pharmacognosy, school of pharmaceutical sciences, vels university, pallavaram, chennai-117, tamil nadu, india. malarkodi velraj department of pharmacognosy, school of pharmaceutical sciences, vels university, pallavaram, chennai-117, tamil nadu, india. hemal atha department of pharmacognosy, school of pharmaceutical sciences, vels university, pallavaram, chennai-117, tamil nadu, india. jaya kumari department of pharmacognosy, school of pharmaceutical sciences, vels university, pallavaram, chennai-117, tamil nadu, india.

in the present study, anti-anaphylactic, anti-inflammatory and membrane stabilizing properties of a lupine alkaloid plumerianine (compound 1), isolated from the root bark of plumeria acutifolia poir were investigated in animal models. the anti-anaphylactic activity of compound 1 (10, 25 and 50 mg/kg) was studied by using models such as passive cutaneous anaphylaxis, passive paw anaphylaxis and ...

Journal: :مجله بین المللی زیست و زیست پزشکی 0
muhammad rowshanul habib department of biochemistry and molecular biology, university of rajshahi, rajshahi-6205, bangladesh muhammad anwar ul islam department of pharmacy, university of rajshahi, rajshahi-6205, bangladesh muhammad rezaul karim department of biochemistry and molecular biology, university of rajshahi, rajshahi-6205, bangladesh

calotropis gigantea (linn) and amoora rohituka (roxb.) have long been used in folkloric medicine for the treatment of various ailments in bangladesh. the present study was designed to investigate the cytotoxicity of isolated compounds from these two plants. two compounds, named β-boswellic acid (compound-1) and 2-methoxy-14-calamenenone (compound-2) were isolated from the flowers of calotropis ...

Journal: :research in pharmaceutical sciences 0
v hajhashemi l saghaei a fassihi h mojiri-froshani

derivatives of pyridine-4-one are iron chelators with various biological activities including antifungal, anti-malarial, antiviral, anti-inflammatory and analgesic activities. this study was aimed to evaluate the analgesic effect of four new derivatives of 3-hydroxy pyridine-4-one in animal models. acetic acid-induced writhing and formalin tests were used to assess the analgesic activity in mal...

Journal: :iranian biomedical journal 0
آزاده مشکینی azadeh meshkini راضیه یزدان پرست razieh yazdanparast مژگان حیدری mojgan haidari

background: regarding the strong differentiation and anti-leukemic activity of dendrostellera lessertii extract, an active agent with similar capabilities was isolated from the crude extract of the plant leaves. the aim of this study was to determine whether the anti-proliferative effect observed for this compound, is differentiation-dependent among the drug-treated cells, using u937 cells. met...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی کشتی سازی بندرعباس 1385

افزایش سرعت شناورها و تمایل به استفاده از مواد کامپوزیت در ساخت کشتی های تندرو باعث شده است که مکانیک برخورد این شناورها خصوصاً بررسی های آماری و ریسک آنها از اهمیت ویژه ای برخوردار شود، لذا لزوم وجود یک راه ساده برای پیش بینی سریع مقدار خرابی و پاسخ سازه ضروری است. این در حالیست که در این زمینه تاکنون مطالعه کافی انجام نشده است. در این پروژه به دلیل پیچیدگی مکانیک برخورد شناورهای فایبرگلاس، ا...

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