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DOI: 10.1055/s-2006-957395
© Georg Thieme Verlag Stuttgart · New York
New Saponins from the Seeds of Agrostemma githago var. githago #
# Dedicated to Prof. Dr. G. Franz, Regensburg on the occasion of the 60th anniversary of his birthday.Publication History
Publication Date:
04 January 2007 (online)
Abstract
Two new saponins were isolated from the seeds of Agrostemma githago L. var. githago. On the basis of chemical and spectral evidence their structures were determined to be 3-O-β-D-xylopyranosyl-{1→3}-[β-D-galactopyranosyl-(1→2)]-β-D-glucuronopyranosylgypsogenin-28-O-β-D-xylopyranosyl-(1→4)-[β-D-glucopyranosyl-(1→3)]-α-L-rhamnopyranosyl-(1→2)-β-D-4-O-acetylfucopyranoside and 3-O-β-D-xylopyranosyl-(1→3)-[β-D-galactopyranosyl-(1→2)]-β-D-glucuronopyranosyl-gypso-genin-28-O-β-D-xylopyranosyl-(1→3)-β-D-xylopyranosyl-(1→4)-[β-D-glucopyranosyl-(1→3)]-α-L-rhamnopyranosyl-(1→2)-β-D-4-O-acetylfucopyranoside.
Key words
Agrostemma githago L. var. githago - Caryophyllaceae - seeds - triterpenoid saponins - gypsogenin - 3,28-O-bisdesmosides