premna crassa/抗菌的

BACKGROUND Three antibacterial diterpenes: (5R,8R,9S,10R)-12-oxo-ent-3,13(16)-clerodien-15-oic acid (1), 16-hydroxy-clerod-3,13(14)-diene-15,16-olide (2) and ent-12-oxolabda-8,13(16)-dien-15-oic acid (3) were previously isolated form Premna schimperi and P. oligotricha. Since andrographolide and

A novel diterpene, (5R, 8R, 9S, 10R)-12-oxo-ent-3,13(16)-clerodien-15-oic acid, has been obtained from the leaves of Premna schimperi (Verbenaceae) using an anti-microbial bioassay-guided isolation procedure. The diterpene was identified on the basis of spectroscopic data and is active against the

A novel sesquiterpene, 7 alpha-hydroxy-6, 11-cyclofarnes-3(15)-en-2-one [1], has been isolated from the aerial parts of Premna oligotricha (Verbenaceae) using an antimicrobial bioassay-guided isolation procedure. The sesquiterpene was identified on the basis of spectroscopic data and showed weak

Premna microphylla Turczaninow, an erect shrub, was widely used in Chinese traditional medicine to treat dysentery, appendicitis, and infections. In this study, the essential oil from P. microphylla Turcz. was obtained by hydrodistillation and analyzed by GC (Gas Chromatography) and GC-MS (Gas

BACKGROUND Premna resinosa (Hochst.) Schauer also called "mukarakara" in Mbeere community of Kenya is used in the management of respiratory illness. In this study we investigated antituberculous, antifungal, antibacterial activities including cytotoxicity and phytochemical constituents of this

The root nodules of Premna herbaceae, which are being used in ayurvedic system of medicine as gantubharangi for curing several ailments, have been studied for antimicrobial activities. The major compound responsible for the biological activity is bharangin, a yellow colored compound extractable with

BACKGROUND To overcome the escalating problems associated with infectious diseases and drug resistance, discovery of new antimicrobials is crucial. The present study aimed to carry out in vitro antimicrobial analysis of 15 medicinal plant species selected according to their traditional medicinal