
TY  - JOUR
A1  - Tanaka, Nobutoshi 
A1  - Ushioda, Toshiyuki 
A1  - Fuchino, Hiroyuki 
A1  - Braggins, John E. 
T1  - Four New Flavan-4-ol Glycosides from <emph type="2">Pneumatopteris pennigera</emph>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1997
VL  - 50
IS  - 4
SP  - 329
EP  - 332
KW  - 
UR  - https://doi.org/10.1071/C96108 
N2  - 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. 
ER  -

