نتایج جستجو برای: α amyrin

تعداد نتایج: 165153  

Journal: :Applied sciences 2023

Despite the medicinal uses of Phragmanthera capitata, Globimetula dinklagei and Tapinanthus bangwensis against memory loss, convulsions pain, their efficacy brain-dysfunction diseases inflammation models has not yet been studied. Therefore, this study aims to investigate anti-inflammatory acetylcholinesterase (AChE) inhibitory potentials crude extracts isolated natural compounds by combining in...

Journal: :Bulletin of the National Research Centre 2022

Abstract Background Medicinal plants have been the mainstay for treatment of various diseases since antiquity. The importance ethnomedicinal in drug discovery and development can never be overemphasized. Breonadia salicina (Vahl) Hepper J.R.I.Wood (Rubiaceae) is a medium to large plant that widely distributed tropical subtropical regions; leaf, stem bark, root used folk medicine cancer, arthrit...

2013
Wim J. Baas Gerard J. Niemann

In Hoya bella latex a number of triterpenols were found, both in the free form and as esters. The main triterpenols were /?-amyrin, cycloartenol, lupeol and the rarely occurring isobauerenol; esters of these alcohols which included cinnamic acid, propionic acid and isovaleric acid were identified. A homologous series of alkanes with carbon chain length ranging from C-20 to C-31 was found. In le...

Journal: :Chemical & pharmaceutical bulletin 2004
Viqar Uddin Ahmad Umar Farooq Javid Hussain Farman Ullah Sarfraz Ahmad Nawaz Muhammad Iqbal Choudhary

Two new clerodane-type diterpenoids trivially named as ballotenic acid (1) and ballodiolic acid (2) have been isolated from Ballota limbata along with three the known compounds; beta-amyrin, oleanolic acid, and beta-sitosterol. The structure elucidation of the new compounds was based primarily on two-dimensional (2D)-NMR techniques including correlation spectroscopy (COSY), heteronuclear multip...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2014
Louis P Sandjo Chi G Fru Victor Kuete Frederic Nana Samuel O Yeboah Renameditswe Mapitse Berhanu M Abegaz Thomas Efferth Till Opatz Bonaventure T Ngadjui

A new triterpene diastereomer, 1, of the previously reported 3beta,6beta,19alpha-trihydroxy-urs-12-en-28-oic acid-24-carboxylic acid methyl ester was obtained from the stem bark of Omphalocarpum elatum Miers (Sapotaceae) along with a-amyrin acetate (2), spinasterol (3), spinasterol 3-O-beta-D-glucopyranoside (4), and tormentic acid (5). The structures of the isolates were established on the bas...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده شیمی 1393

در این تحقیق سنتز و شناسایی پیرازولو پیریدین¬ها و آرن های چند عاملی، از یک واکنش چند جزیی میان دی سیانو آلکن¬ها، هیدرازین و سیانو کیتین دی تیو استال¬ها در دمای 25 درجه سانتیگراد و حلال اتانول انجام شده است. سپس جهت گسترش دامنه تحقیقات، سنتز و شناسایی برخی هتروسیکل¬ها با استفاده از α،α- دی سیانو الفین¬ها (آریل اتیلیدن مالونونیتریل¬ها) مورد بررسی قرار گرفت. در این تحقیق، واکنش سه جزئی شا...

2003
Alberto dos Santos Francisco Radler de Aquino Neto

Tipuana tipu (Benth.) Kuntze is a tree from the leguminosae family (Papilionoideae) indigenous in Argentina and extensively used in urbanism, mainly in Southern Brazil. The epicuticular waxes of leaves and branch, and flower surface were studied by high temperature high resolution gas chromatography. Several compounds were characterized, among which the aliphatic alcohols were predominant in br...

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