نتایج جستجو برای: β amyrin

تعداد نتایج: 177596  

Journal: :Molecules 2013
Catharina E Fingolo Thabata de S Santos Marcelo D M Vianna Filho Maria Auxiliadora C Kaplan

The phytochemical study of Dorstenia arifolia Lam. (Moraceae) has led to the identification of 18 triterpenes esterified by fatty acids, five triterpenes without esterification, 12 triterpenes esterified by acetic acid, together with a known furanocoumarin: α-amyrin (1), β-amyrin (2) α-amyrin acetate (3) β-amyrin acetate (4), α-amyrin octanoate (5), β-amyrin octanoate (6), α-amyrin decanoate (7...

ژورنال: :iran agricultural research 0
hamid kheyrodin department of desert science, semnan university, iran, i.r. iran khosro ghazvinian department of veterinary and animal science, semnan university, iran, i.r. iran

فرفیون از گیاهان گلدار متعلق به خانواده شیرسگ یا شیرشیرکان (euphorbiaceae) است. جنس فوق دارای 2008 گونه متعدد است.  فرفیون یکی از بزرگترین و پیچیده­ترین جنس از گیاهان گل دار بوده و گیاه شناسان چندین تلاش ناموفق برای کوچکتر نمودن جنس ها انجام داده­اند. تعدادی از جنس­ها برای مصارف دارویی و  تعدادی برای مقاصد دیگر بکار برده می­شوند.  اما جالب است که یک گیاه می تواند هم مفید و هم اثرات سمی داشته با...

Journal: :Biological & pharmaceutical bulletin 2012
Mieko Kunii Yutaka Kitahama Ery Odette Fukushima Hikaru Seki Toshiya Muranaka Yuzo Yoshida Yuri Aoyama

CYP51 has been recognized as a unique CYP family that consists of one isolated molecular species, a sterol 14-demethylase essential for sterol biosynthesis. However, another CYP51 gene classified as the CYP51H subfamily has been identified in higher plants, in addition to a sterol 14-demethylase gene, CYP51G1. To shed light on the function of this "second CYP51", oat CYP51H10 was introduced int...

Journal: :iran agricultural research 2013
hamid kheyrodin khosro ghazvinian

euphorbia is a genus of flowering plants belonging to the family euphorbiaceae. consisting of 2008 species. the genus euphorbia produces an irritant, which constitute a health hazard to humans and livestock. the genus euphorbia is one of the largest and most complex genera of flowering plants, however, several botanists have made unsuccessful attempts to subdivide it to smaller genera.  many eu...

2017
Rong Sun Shan Liu Zi‐Zhong Tang Tian‐Run Zheng Tao Wang Hui Chen Cheng‐Lei Li Qi Wu

Conyza blinii H.Lév. is a widely used medicinal herb in southwestern China. The main pharmacological components of C. blinii are a class of oleanane-type pentacyclic triterpene glycosides known as conyzasaponins, which are thought to be synthesized from β-amyrin. However, no genes involved in the conyzasaponin pathway have previously been identified. Here, we identify an oxidosqualene cyclase (...

Journal: :Bulletin of the Chemical Society of Nigeria 2022

Chemical composition of propolis has been reported to be phyto-geographical in nature. The aim this study was isolate and characterize chemical compounds from hexane ethyl acetate extract obtained Gboko. To compounds, subjected column chromatography by gradient elution using two solvent mixtures - hexane: acetate: methanol. structure the isolated compound established 1H-NMR further verification...

2017
Francisco Alcione Nobre da Silva Sônia Maria de Farias Freire Marilene Oliveira da Rocha Borges Francisco Erivaldo Vidal Barros Maria da de Sousa Maria Nilce de Sousa Ribeiro Giselle Maria Skelding Pinheiro Guilhon Adolfo Henrique Müller Antonio Carlos Romão Borges

Background Pluchea quitoc DC. (Asteraceae), a medicinal plant known as "quitoco," "caculucage," "tabacarana" and "madre-cravo," is indicated for inflammatory conditions such as bronchitis, arthritis, and inflammation in the uterus and digestive system. Objective This study evaluated the analgesic and anti-inflammatory activities of the triterpenes compounds obtained from P. quitoc aerial part...

Journal: :The Plant cell 2011
Hikaru Seki Satoru Sawai Kiyoshi Ohyama Masaharu Mizutani Toshiyuki Ohnishi Hiroshi Sudo Ery Odette Fukushima Tomoyoshi Akashi Toshio Aoki Kazuki Saito Toshiya Muranaka

Glycyrrhizin, a triterpenoid saponin derived from the underground parts of Glycyrrhiza plants (licorice), has several pharmacological activities and is also used worldwide as a natural sweetener. The biosynthesis of glycyrrhizin involves the initial cyclization of 2,3-oxidosqualene to the triterpene skeleton β-amyrin, followed by a series of oxidative reactions at positions C-11 and C-30, and g...

2016
Yanling Liu Zhongjuan Zhao Zheyong Xue Long Wang Yunfei Cai Peng Wang Tiandi Wei Jing Gong Zhenhua Liu Juan Li Shuo Li Fengning Xiang

Paralogous members of the oxidosqualene cyclase (OSC) family encode a diversity of enzymes that are important in triterpenoid biosynthesis. This report describes the isolation of the Gentiana straminea gene GsAS2 that encodes a β-amyrin synthase (βAS) enzyme. Unlike its previously isolated paralog GsAS1, GsAS2 lacks introns. Its predicted protein product was is a 759 residue polypeptide that sh...

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