BACKGROUND
Urtica dentata Hand (UDH), the root of Laportea bulbifera (Sieb. et. Zucc.) Wedd, has long been utilized in traditional Chinese medicine for the treatment of rheumatoid arthritis and some other autoimmune diseases. Coumarins are the main active principles contributing to UDH's efficacy,
A new triterpenoid 2alpha,3beta,21beta,23,28-penta hydroxyl 12-oleanene and two known compounds were isolated from the roots of Laportea crenulata Gaud. The structures of all compounds were elucidated on the basis of various spectroscopic data. The two known compounds beta-sitosterol and
Bio-active compounds present in West Indian Wood Nettle Laportea aestuans (L.) Chew (Urticaceae), used in ethno medicine as antioxidant and antimicrobial were studied. The aim of this research work was to isolate and characterize the bio-active compounds in the n-hexane fraction of L. aestuans,
Crude extracts and 2alpha,3beta,21beta,24beta,28-pentahydroxy-olean-12-ene (1) obtained from the root of Laportea crenulata exhibited remarkable antibacterial activities against both Gram (+) and Gram (-) bacteria. The antifungal activities of crude extracts and compound (1) were also determined.
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