Studies from University of Yaounde provide new data on natural products.

Science Letter | February 3, 2009 | Copyright

"Six new unusual C-4'-prenylated flavonols, dorsilurins F-K (1-6), together with six known compounds were isolated from the roots of Dorstenia psilurus, and their structures were elucidated on the basis of spectroscopic evidence," researchers in Yaounde, Cameroon report (see also Natural Products).

"The isolated compounds exhibited moderate to low alpha-glucosidase inhibitory activity. Dorsilurin F (1), with three unmodified prenyl groups, was the most active, while dorsilurin K (6), with only one unmodified prenyl group, was the least active compound," wrote T.K. ...

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Alkaloids: Nature's Curse or Blessing?
Magazine article from: American Journal of Pharmaceutical Education ; ...naturally occurring Opium alkaloids and their mirror images...Chapter 6 focuses on alkaloid synthesis, providing...the largest group of alkaloids, the indole alkaloids. Chapter 8 presents...benzylisoquinoline alkaloid classes, as well...
Alkaloids and saponins in dietary supplements of blue cohosh (Caulophyllum thalictroides).(DIETARY SUPPLEMENTS)(Report)
Magazine article from: Journal of AOAC International ; ...contains a number of alkaloids, including a variety of quinolizidine alkaloids such as baptifoline...contains the aporphine alkaloid magnoflorine (Figure...characterized the alkaloid thalictroidine, as well as the alkaloids taspine, magnoflorine...
Alkaloid answers.(Modern Alkaloids)(Book review)
Magazine article from: Chemistry and Industry ; ...However, most studies on alkaloids cover mainly their effects...the book: bioactive alkaloids--structure and biology, new trends in alkaloid isolation and structure...finally, new trends in alkaloid synthesis and biosynthesis...the biosynthesis of alkaloids, and therein lies its...
Determination of ergot alkaloids: purity and stability assessment of standards and optimization of extraction conditions for cereal samples.(FOOD CHEMICAL CONTAMINANTS)(Report)
Magazine article from: Journal of AOAC International ; ...important producer of toxic alkaloid metabolites (ergot alkaloids) in the overwintering...OMITTED] The major ergot alkaloids ergometrine, ergotamine...the determined ergot alkaloids then is often referred to as the total alkaloid content (12). LC...
Biosynthesis and Accumulation of Ergoline Alkaloids in a Mutualistic Association between Ipomoea asarifolia (Convolvulaceae) and a Clavicipitalean Fungus1
Magazine article from: Plant Physiology ; ...synthesize ergoline alkaloids depends on the presence...responsible for ergoline alkaloid biosynthesis. The gene...occurrence of ergoline alkaloids in taxonomically unrelated...encoding the ergoline alkaloid biosynthetic pathway...the case of ergoline alkaloids, but also with other...
ENHANCED PRODUCTION OF TROPANE ALKALOIDS IN SCOPOLIA PARVIFLORA BY INTRODUCING THE PMT (PUTRESCINE N-METHYLTRANSFERASE) GENE
Magazine article from: In Vitro Cellular & Developmental Biology ; ...the tropane alkaloids. Moreover, the tropane alkaloid levels were...pathway of tropane alkaloids (Sato et al...roots are the alkaloid synthetic organ...biosynthesis of these alkaloids (Fig. 1...that tropane alkaloid production by...
Exploiting the borono-Mannich reaction in bioactive alkaloid synthesis *.(Report)
Magazine article from: Pure and Applied Chemistry ; ...polyhydroxylated indolizidine alkaloids, for example, castanospermine...structurally related alkaloid, uniflorine A 8 [10]. These alkaloids are powerful inhibitors...azepine Stemona alkaloid, stemocurtisinol 13 [14]. These alkaloids comprise a new and...
Induction of apoptosis by carbazole alkaloids isolated from Murraya koenigii.
Magazine article from: Phytomedicine: International Journal of Phytotherapy & Phytopharmacology ; ...HL-60. Three carbazole alkaloids, mahanine (6), pyrayafoline...after treatment with each alkaloid. Interestingly, each carbazole alkaloid induced the loss of mitochondrial...activated upon treatment with the alkaloids. Caspase-9 and caspase...
Liquid chromatographic analysis of Cinchona alkaloids in beverages.(FOOD COMPOSITION AND ADDITIVES)(Report)
Magazine article from: Journal of AOAC International ; ...curves for Cinchona alkaloids with the UV detector...limit of each Cinchona alkaloid, taken to be the concentration...recovery of Cinchona alkaloids added at a level of...of a single Cinchona alkaloid salt to food is prohibited...quantification of 4 Cinchona alkaloids that are main ...
Characterization of Vacuolar Transport of the Endogenous Alkaloid Berberine in Coptis japonica1
Magazine article from: Plant Physiology ; ...mechanisms of these alkaloids in plant cells...other hand, alkaloid-producing...simple model for alkaloid accumulation...this model, alkaloids, which are...of endogenous alkaloids. To study the mechanism of alkaloid transport in...

Find more facts and information related to the article "Studies from University of Yaounde provide new ..."