Studies on identification of Phragmitis Rhizoma and its counterfeits / 中国中药杂志

The study aims to explore the main differential characteristics of Phragmites Rhizoma and its counterfeits (rhizomes of Arundo donax, Triarrhena lutarioriparia and Miscanthus sinensis) and provide experimental basis for the reasonable applications of gramineous plants through system research and comparison of plant morphogenesis, character, transverse organization characteristics and powder microscopic characteristics.

Studies on constituents from rhizome of Arundo donax / 中草药

Objective: To study chemical components of rhizome of Arundo donax, a folk medicine. Methods: Using different methods such as chromatography and recrystallization purification to get chemical components, and the structures were identified by physical and chemical properties and spectral data. Results: Twenty-three compounds were isolated and identified as following: hexadecanoic acid (1), n-docosane (2), myristic acid glycerides (3), 5,6-epoxy-22,24-ergosta-8(14),22-diene-3,7-diol (4), 5,6-epoxy-22,24-ergosta-8(9),22-diene-3,7-diol (5), 5,8-epidioxy-22,24-ergosta-6,22-dien-3-ol (6), stigmast-4-ene-3,6-dione (7), 6,9-epoxy-ergosta-7,22-dien-3-ol (8), stigmast-22-en-3,6, 9-triol (9), 3,4,5-trimethoxyphenol (10), 2,6-dimethoxy-1,4-quinone (11), sinapaldehyde (12), hydroxycinnamic acid (13), β-sitostenone (14), α-asarone (15), 4-dodecylbenzaldehyde (16), β-sitosterol (17), α-spinasterol (18), p-hydroxybenzaldehyde (19), ursolic acid (20), N-acetyltryptamine (21), daucosterol (22), and (-)-syringaresinol (23). Conclusion: Compouds 1-16 and 18-23 are isolated from the plant in genus Arundo L. for the first time.