
%0 Journal Article
%A Tanaka, Nobutoshi 
%A Ushioda, Toshiyuki 
%A Fuchino, Hiroyuki 
%A Braggins, John E. 
%T Four New Flavan-4-ol Glycosides from <emph type="2">Pneumatopteris pennigera</emph>
%J Australian Journal of Chemistry
%D 1997/06/30
%V 50
%N 4
%P 329-332
%K 
%R https://doi.org/10.1071/C96108
%U https://www.publish.csiro.au/paper/C96108 
%X From the fronds of Pneumatopteris pennigera, four new flavan-4-ol glycosides, named pneu- matopterins A, B, C and D, were isolated. Their structures were determined as (2S,4R)-5,7-di-&#946;-D-glucopyranosyloxy-6-hydroxymethyl-8-methylflavan-4-ol, (2S,4R)-5,7-di-&#946;-D-glucopyranosyloxy-6,8-dimethylflavan-4-ol, (2S,4R)-5-&#946;-D-glucopyranosyloxy-7-hydroxy-6-hydroxymethyl-8-methyl-4,2&#8242;&#8242;-oxo-flavan, and (2S,4R)-5-&#946;-D-glucopyranosyloxy-7-hydroxy-6,8-dimethyl-4,2&#8242;&#8242;-oxo-flavan, respectively, on the basis of spectroscopic data and chemical correlations. 
