Chem. Pharm. Bull., 54(12),1728-1729, December 2006

Notes

Two Diterpene Rhamnosides, Mimosasides B and C, from Mimosa hostilis

Ayumi OHSAKI,^*,a Ritsuko YOKOYAMA,^b Haruka MIYATAKE,^b and Yoshiyasu FUKUYAMA^*,b

^a Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University; Chiyoda-ku, Tokyo 101-0062, Japan: and ^b Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University; Yamashiro-cho, Tokushima 770-8514, Japan. * To whom correspondence should be addressed. e-mail: fukuyama@ph.bunri-u.ac.jp; a-ohsaki.fm@tmd.ac.jp

Two new diterpene rhamnosides, mimosasides B and C (1, 2) were isolated together with mimosaside A (3), a known diterpene rhamnoside (4), four known flavones (5-8), five known flavanones (9-13), and four known chalcones (14-17) from the leaves and twigs of a Brazilian medicinal plant, Mimosa hostilis.

Key words diterpene rhamnoside; mimosaside A; mimosaside B; mimosaside C; Mimosa hostilis