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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Cycloartane glycosides from Sutherlandia frutescens
Journal of Natural Products, Volume 71, No. 10, Year 2008
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Description
Four new cycloartane glycosides, sutherlandiosides A-D (1-4), were isolated from the South African folk medicine Sutherlandia frutescens and their structures established by spectroscopic methods and X-ray crystallography as 1S,3R,24S,25-tetrahydroxy-7S,10S-epoxy-9,10-seco-9,19-cyclolanost-9(11)-ene 25-O-β-D-glucopyranoside (1), 3R,7S,24S,25-tetrahydroxycycloartan-1-one 25-O-β-D-glucopyranoside (2), 3R,24S,25-trihydroxycycloartane-1,11-dione 25-O-β-D- glucopyranoside (3), and 7S,24S,25-trihydroxycycloart-2-en-1-one 25-O-β-D-glucoyranoside (4). Compound 1 represents the first secocycloartane skeleton possessing a 7,10-oxygen bridge. Compounds 2-4 are also the first examples of naturally occurring cycloartanes with a C-1 ketone functionality. Biosynthetic considerations and chemical evidence suggest that the presence of the C-1 ketone in 2 may facilitate the ring opening of the strained cyclopropane system. © 2008 American Chemical Society and American Society of Pharmacognosy.
Authors & Co-Authors
Fu, Xiang
United States, University
University of Mississippi
Li, Xingcong
United States, University
University of Mississippi School of Pharmacy
Smillie, Troy J.
United States, University
University of Mississippi School of Pharmacy
Carvalho, Paulo Batista De
United States, University
University of Mississippi
Mabusela, Wilfred T.
South Africa, Bellville
University of the Western Cape
Syce, James A.
South Africa, Bellville
University of the Western Cape
Johnson, Quinton
South Africa, Bellville
University of the Western Cape
Folk, William R.
United States, Columbia
University of Missouri
Avery, Mitchell A.
United States, University
University of Mississippi School of Pharmacy
United States, University
University of Mississippi
Khan, Ikhlas A.
United States, University
University of Mississippi
United States, University
University of Mississippi School of Pharmacy
Statistics
Citations: 65
Authors: 10
Affiliations: 4
Identifiers
Doi:
10.1021/np800328r
ISSN:
01633864
Research Areas
Health System And Policy