نتایج جستجو برای: terpenoids

تعداد نتایج: 2568  

2017
Justin T. Fischedick

Introduction: With laws changing around the world regarding the legal status of Cannabis sativa (cannabis) it is important to develop objective classification systems that help explain the chemical variation found among various cultivars. Currently cannabis cultivars are named using obscure and inconsistent nomenclature. Terpenoids, responsible for the aroma of cannabis, are a useful group of c...

2013

The present investigation of crude extracts from leaf, seed coat and stem of cardiospermum halicacabum L. in different solvent, were subjected to phytochemical and antibacterial screening against the selected Gram positive and Gram negative bacteria. The phytochemical solvent extracts were used for screening and antibacterial activity, were analysed. The Phytochemical studies indicate that the ...

2009
A. S. JAIN S. J. SURANA

Spathodea falcata is used in Indian folk medicine as an antiulcerogenic agent. This study was intended to evaluate the antiulcer property of various extracts of bark of Spathodea falcata at different dose levels in ethanol induced and indomethacin induced gastric ulcer models. It was observed that oral administration of all the extracts shows significant reduction in ulcer lesion index as well ...

Journal: :Journal of the Brazilian Chemical Society 2003

Journal: :Chemistry of Natural Compounds 1983

Journal: :Molecules 2012
Gloria Díaz-Ruiz Liliana Hernández-Vázquez Héctor Luna María del Carmen Wacher-Rodarte Arturo Navarro-Ocaña

Five terpenoids were tested by the macrodilution broth method to determine their inhibition activity on cariogenic bacterial growth. In general, α-, β-amyrin and α-amyrin phenylacetate proved to be active, reducing the bacterial viability to less than 20%.

Journal: :Chemical communications 2008
Jun-Feng Zhao Yu-Jun Zhao Teck-Peng Loh

An arene-terminated epoxy olefin cyclization was promoted by a water-tolerant Lewis acid to give tri- and tetracyclic 3beta-hydroxy terpenoids and steroid derivatives in 57 and 37% yields, respectively, per new formed ring up to 75%.

Journal: :Water research 2010
Cynthia A Joll Michael J Alessandrino Anna Heitz

We report the formation of trihalomethanes and other disinfection by-products from four polyfunctional terpenoids during simulated chlorination of natural waters. Complex suites of products were identified by closed loop stripping analysis (CLSA)/gas chromatography-mass spectrometry (GC-MS) from halogenation of beta-carotene and retinol. beta-Ionone appeared to be a key intermediate in the halo...

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