Okanin Explained

Okanin is a chalconoid. It can be found in the plant Bidens pilosa (Picao preto).^[1]

Glycosides / Acetylations

Marein is the 4'-O-glucoside of okanin.

Methylated okanin derivatives can be isolated from Bidens torta. Those include okanin 3,4,3′,4′-tetramethyl ether, okanin 3,4,3′-trimethyl ether 4′-glucoside, okanin 4-methyl ether 4′-glucoside and okanin 4-methyl ether 4′-glucoside monoacetate. Okanin 3,4-dimethyl ether 4′-glucoside can also be isolated.^[2]

Notes and References

1. http://www.rain-tree.com/picao-preto-chemicals.pdf Presence of Compounds in Picao preto (Bidens pilosa)
2. https://archive.today/20120913100924/http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TH7-42G1789-58&_user=4296857&_coverDate=12/31/1984&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000012518&_version=1&_urlVersion=0&_userid=4296857&md5=c8b9ec7f9c54cf5cdcc232105bee601f Methylated Chalcones from Bidens torta. Susan P. McCormick, Bruce A. Bohm and Fred R. Ganders, Phytochemistry, Volume 23, Issue 10, 1984, Pages 2400-2401