Isolation and characterization of phenolic compounds from Coptidis Rhizoma.

[Toxicoderma due to Rhizoma coptidis].

Rhizoma Coptidis: A Potential Cardiovascular Protective Agent

Cardiovascular diseases (CVDs) are among the leading causes of morbidity and mortality in both the developed and developing world. Rhizoma coptidis (RC), known as Huang Lian in China, is the dried rhizome of medicinal plants from the family Ranunculaceae, such as Coptis chinensis Franch, C. deltoidea C.Y. Cheng et Hsiao, and C. teeta Wall which has been used by Chinese medicinal physicians for ...

Isolation and characterization of phenolic compounds from the leaves of Salix matsudana.

A bioassay-guided in vitro screen has revealed that a 70% methanol extract of the leaves of Salix matsudana shows considerable inhibitory activity against cyclooxygenases (COX-1 and COX-2). A subsequent phytochemical study led to the isolation of a new flavonoid, matsudone A (1), together with five known flavonoids--luteolin (2), isoquercitrin (3), 7-methoxyflavone (4), luteolin 7-O-glucoside (...

Isolation and Characterization of Two Phenolic Compounds from the Stem Bark of Musanga

M. cecropioides is a tree that grows with great rapidity in high forests of the tropical African zone stretching from Guinea to Zaire and Angola. The tree has smooth bark, grey to brownish-green in color with prominent brown lenticels (1). Ethnomedical uses of the plant leaves as oxytocic (2) antihypertensive (3-5) and antiglycaemic (6) agents have been scientifically validated, while hypotensi...

Anti-Alzheimer and antioxidant activities of Coptidis Rhizoma alkaloids.

Coptidis Rhizoma and its isolated alkaloids are reported to possess a variety of activities, including neuroprotective and antioxidant effects. Thus, the anti-Alzheimer and antioxidant effects of six protoberberine alkaloids (berberine, palmatine, jateorrhizine, epiberberine, coptisine, and groenlandicine) and one aporphine alkaloid (magnoflorine) from Coptidis Rhizoma were evaluated via beta-s...