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dc.contributor.author Ngadjui, B.T.
dc.contributor.author Abegaz, B.M.
dc.contributor.author Keumedjio, F.
dc.contributor.author Folefoc, G.N.
dc.contributor.author Kapchec, G.W.F.
dc.date.accessioned 2008-10-27T07:36:21Z
dc.date.available 2008-10-27T07:36:21Z
dc.date.issued 2002
dc.identifier.citation Ngadjui, B.T. et al (2002) Diterpenoids from the stem bark of Croton zambesicus, Phytochemistry, vol. 60, pp. 345–349 en
dc.identifier.issn 0031-9422
dc.identifier.uri http://hdl.handle.net/10311/251
dc.description.abstract Three clerodane diterpenoids, crotozambefurans A, B and C were isolated from the stem bark of Croton zambesicus together with the known clerodane crotocorylifuran and two trachylobanes: 7b-acetoxytrachyloban-18-oic acid and trachyloban-7b, 18-diol. Betulinol, lupeol, sitosterol and its 3b-glucopyranosyl derivative were also obtained. The structures of crotozambefurans A, B and C were determined, respectively, as: 15,16-epoxy-1,3,13(16),14-clerodatetraen-20,12-olide-18,19-dioic acid dimethylester, 15,16-epoxy- 1,3,13(16),14-clerodatetraen-18,19,20-trioic acid trimethylester and 15,16-epoxy-3,13(16),14-clerodatrien-19,1a:20,12-diolide-18-oic acid methylester, using spectroscopic analysis, especially, NMR spectra in conjunction with 2D experiments, COSY, HSQC, HMBC and TOCSY. en
dc.language.iso en en
dc.publisher Elsevier Science Ltd. www.elsevier.com/locate/phytochem en
dc.subject Croton zambesicus en
dc.subject Euphorbiaceae en
dc.subject Stem bark en
dc.subject Isolation; Clerodane en
dc.subject Crotozambefurans A, B and C en
dc.title Diterpenoids from the stem bark of Croton zambesicus en
dc.type Article en


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