نتایج جستجو برای: dracocephalum kotschy boiss

تعداد نتایج: 2833  

Journal: :Oesterreichische Botanische Zeitschrift 1883

2016
Viktor Ilkei András Spaits Anita Prechl Áron Szigetvári Zoltán Béni Miklós Dékány Csaba Szántay Judit Müller Árpád Könczöl Ádám Szappanos Attila Mándi Sándor Antus Ana Martins Attila Hunyadi György Tibor Balogh György Kalaus (†) Hedvig Bölcskei László Hazai Tibor Kurtán

Starting from racemic naringenin ((±)-1), a mixture of dracocephin A stereoisomers 6-(2"-pyrrolidinone-5"-yl)naringenin (±)-2a-d and its regioisomer, dracocephin B 8-(2"-pyrrolidinone-5"-yl)naringenin (±)-3a-d originally isolated from Dracocephalum rupestre, have been synthesized in a one-pot reaction. The separation of 2a-d and 3a-d was achieved by preparative HPLC. The four stereoisomers of e...

2017
Asma Akter Paolo Biella Jan Klecka

Plants often grow in clusters of various sizes and have a variable number of flowers per inflorescence. This small-scale spatial clustering affects insect foraging strategies and plant reproductive success. In our study, we aimed to determine how visitation rate and foraging behaviour of pollinators depend on the number of flowers per plant and on the size of clusters of multiple plants using D...

Journal: :International journal of chemistry and technology 2022

From ancient times to the present, plants have been used in many different areas. One of most striking these areas use is alternative medicine. Turkey a country rich both terms location and other favorable conditions. This wealth reveals importance In this context, it very important determine pharmacological properties plants. our study, total antioxidant status (TAS), oxidant (TOS), oxidative ...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2007
I Irem Tatli Satoshi Takamatsu Ikhlas Khan Zeliha S Akdemir

Free radical scavenging and cell aggregation inhibitory activities of 36 secondary metabolites isolated from the methanolic extracts of Verbascum cilicicum Boiss., V. lasianthum Boiss. ex Bentham, V pterocalycinum var. mutense Hub.-Mor., and V. salviifolium Boiss. (Scrophulariaceae) were investigated. The isolated compounds, 6-O-vaniloyl ajugol (1), ilwensisaponin A (2), ilwensisaponin C (3), v...

2014
Shahin Gavanji Elmira Mohammadi Behrouz Larki Azizollah Bakhtari

BACKGROUND Since ancient times, various infectious diseases have been treated using herbal drugs. Today, efforts regarding the discovery of the effectual components of plants possessing antimicrobial properties are advanced. Herbal essential oils are widely used for treatment of various diseases, and they play an important role in health care considerations. METHODS The antibacterial activity...

2015
Shahin Gavanji Sayed R. Zaker Zahra G. Nejad Azizollah Bakhtari Elham S. Bidabadi Behrouz Larki

BACKGROUND The Candida species are the most important factors of fungal infections in humans and animals. It is necessary to prepare antifungal or antimicrobial drugs because of increasing drug resistance. The natural treatment of diseases of bacterial origin using medicinal plants is important. In this study the effect of antimicrobial medicinal herbal essential oils and conventional antifunga...

Journal: :Österreichische Botanische Zeitschrift 1889

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