Browsing Journal Articles by Author "Majinda, Runner R. T."

Browsing Journal Articles by Author "Majinda, Runner R. T."

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  • Antimicrobial Flavonoids from Bolusanthus speciosus 
    Wanjala, Cornelius C.; Bojase, Gomotsang; Majinda, Runner R. T.; Gashe, Berhanu A. (2002)
    A new isoflavanone namely 3,5,7,2′,4′-pentahydroxy-8,3′-di(γ,γ-dimethylallyl)isoflavanone (bolusanthin II) and four new pterocarpans identified as 3-hydroxy-6′,6′-dimethylpyrano[2′,3′:1,2] [6aR,11aR]-8,9-methylenedioxypterocarpan ...
  • Bioactive non-alkaloidal constituents from the genus Erythrina 
    Wanjala, Cornelius C.; Majinda, Runner R. T.; Juma, Benard F. (Elsevier, 2005)
    The genus Erythrina is very rich in secondary metabolites particularly of the flavonoids class. A literature survey of non-alkaloidal secondary metabolites from Erythrina showed the presence of flavanones, flavonols, ...
  • Erythrinaline alkaloids and antimicrobial flavonoids from Erythrina latissima. 
    Wanjala, Cornelius C.; Juma, Benard F.; Bojase, Gomotsang; Gashe, Berhanu A.; Majinda, Runner R. T. (2002)
    The seed pods of Erythrina latissima yielded erysotrine, erysodine, syringaresinol, vanillic acid, a new erythrina alkaloid, (+)-10,11-dioxoerysotrine, which was lethal to brine shrimp and 2-(5′-hydroxy-3′-methoxy ...
  • Flavonoid glycosides from Crotalaria podocarpa 
    Wanjala, Cornelius C.; Majinda, Runner R. T. (Elsevier, 1999-07)
    The structures of two flavonoid glycosides isolated from the aerial parts of Crotalaria podocarpa have been established as apigenin 7-O-β-d-apiofuranosyl (1→6)-β-glucopyranoside and a new compound, acacetin 7-O-β-d-apiofuranosyl ...
  • Flavonoids from the stem bark of Bolusanthus speciosus. 
    Wanjala, Cornelius C.; Bojase, Gomotsang; Majinda, Runner R. T. (Elsevier, 2001-04)
    Three flavonoids (bolusanthols A–C), viz an isoflavan and two prenylated isoflavanones, were isolated from the stem bark of Bolusanthus speciosus in addition to four known flavonoids, 5,7,3′-trihydroxy-4′-methoxy-5′-γ,γ- ...
  • Isoflavone glycosides from the root wood of Erythrina latissima. 
    Wanjala, Cornelius C.; Majinda, Runner R. T. (2001-03)
    The molecular structures of 3 isoflavone glycosides isolated from the root wood of Erythrina latissimawere established as 4′-hydroxyisoflavone-7-O-β-D-glucopyranoside (compound 1); 4′-hydroxyisoflavone-7-O-α-L-rhamnosyl ...
  • A new isoflavanone from the stem bark of Erythrina latissima 
    Wanjala, Cornelius C.; Majinda, Runner R. T. (Elsevier, 2000-08-01)
    Two isoflavonoids — including the new compound 5,7-dihydroxy-2′,4′,5′-trimethoxyisoflavanone (1) — six flavanones and a feruloyl ester were isolated from the stem bark of Erythrina latissima.
  • A new stilbene glycoside from Elephantorrhiza goetzei. 
    Wanjala, Cornelius C.; Majinda, Runner R. T. (Elsevier, 2001-08)
    A new stilbene glycoside, 5-methoxy-(E)-resveratrol 3-O-rutinoside (1) was isolated from the root bark of Elephantorrhiza goetzei, along with known compounds, namely gallic acid, (E)-resveratrol, (±)-catechin, (±)-gallocatechin ...
  • Recent results from natural product research at the University of Botswana 
    Wanjala, Cornelius C.; Majinda, Runner R. T.; Abegaz, Berhanu M.; Bezabih, Merhatibeb; Ngadjui, Bonaventure T.; Mdee, Ladislaus K.; Bojase, Gomotsang; Silayo, Alfonse; Masesane, Ishmael; Yeboah, Samuel O. (International Union of Pure and Applied Chemistry, 2001)
    Marketed plants are very important items of trade in many parts of the world. The community uses these for a variety of purposes such as foods, cosmetics, flavors, spices, and medicines. It seems that plants that are used ...
  • Two new isoflavanoids from Bolusanthus Speciosus 
    Wanjala, Cornelius C.; Bojase, Gomotsang; Majinda, Runner R. T. (2001)
    The structures of two new isoflavonoids from the combined ethyl acetate/methanolic extracts of the stem bark of Bolusanthus speciosus have been established as 4,7,2' -trihydroxy-4' -methoxyisoflavanol (1) and 5,7,3' ,4' ...

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