ABSTRACT. This study was designed to investigate the chemical constituents from Actinodaphne pruinosa growing in Malaysia. A phytochemical investigation of leaves part resulted isolation boldine (1), norboldine (2), laurotetanine (3), reticuline (4), syringaresinol (5), lupeol (6), and taraxerol (7). The structures isolated phytochemicals were established by analysis their spectroscopic data, a...

The ethyl acetate extract of leaves of Moldenhawera nutans Queiroz & Alkin (Leguminosae) furnished, besides methyl gallate and gallic acid, the flavonols named laricetrin, laricetrin 3-glucoside and laricetrin 3-galactoside as well as the new one named laricetrin 5-galloyl-3-beta-D-xylopyranoside. It also was isolated from the hexane extract: beta-sitosterol, lupenone, beta-amyrinone, alpha-amy...

Phytochemical investigation on the ethanol extracts of Meliosma oldhamii Miquel branches led to the isolation of seven triterpene constituents: betulin (1), lupeol (2), oleanolic acid (3), 3-acetoxyolean-12-en-28acid (4), 3-acetoxyolean-12-en-28-aldehyde (5), 3-acetoxy-28-hydroxyolean-12-ene (6) and maslinic acid (7). Their chemical structures were determined based on the spectroscopic studi...

The Argentinean legume Caesalpinia paraguariensis Burk. (Fabaceae) was selected for further fractionation work based on the strong antimicrobial activity of its CH2Cl2-MeOH (1:1 v/v) extract against a host of clinically significant microorganisms, including antibiotic resistant strains. 1D and 2D NMR enabled the identification of the novel benzoxecin derivative caesalpinol along with the known ...

It has been reported that the shrubby perennial herb, Plumbago zeylanica (family Plumbaginaceae), possesses antimicrobial activities5. It grows in shady places of wastelands and graveyards all over Bangladesh. Roots and aerial parts principally contain an orange yellow pigment, plumbagin, a naphthoquinone and a fatty alcohol5. Its other constituents in roots are chitranone, zeylanone, dihydrost...

The rare lupene derivative named resinone has only been isolated before from Fluorensia resinosa. We now report the isolation of this compound from the bark of the new recently described Acacia cedilloi (Fabaceae), and the revision of its structure to 16beta-hydroxylup-20(29)-en-3-one, based on NMR and MS spectral data. The detailed 1H and 13C NMR assignments of resinone and its acetate achieve...

Justicia gendarussa Burm f. (family Acanthaceae) known as Willow-leaved justicia in English, it is native to china. It is commonly found throughout the greater part of India and Andaman islands. Justicia gendarussa Burm f. is one of the important herbal being used in Ayurvedic system of medicine. Mostly the leaves are used for the medical purposes. A wide variety of biologically active constitu...

The simple terpenes, carotenoids, phytosterols, and flavonoids compositions of the leaves of Acalypha wilkesiana were determined by high performance liquid chromatography (HPLC). The leaves were rich in flavonoids (about 251.3mg/kg dry weight), carotenoids (76.3mg/kg dry weight), and phytosterols (16.6mg/kg dry weight), but very low in simple terpenes (0.0084mg/kg dry weight). Three flavonoids ...

Caralluma tuberculata N. E. Brown is herb distributed in dry regions of the world. The succulent stem of the plant is widely used to treat several ailments including diabetes, rheumatism, leprosy, peptic ulcer, inflammation, jaundice, dysentery, constipation, stomach pain, hepatitis B and C. Phytochemical investigation of plant discovered the presence of flavone glycosides, pregnane glycosides ...

The chromatography fractionation of the hexane, chloroform and ethyl acetate extracts from the leaves and stems of Rourea doniana Baker, Connaraceae, resulted in the isolation of five triterpenes (lupeol, lupenone, α-amyrenone, β-amyrenone, and taraxerol), a flavonol (7,4’-dimethylkaempferol), a coumarin (scopoletin) and four phytosteroids (β-sitosterol, stigmasterol, β-sitosteryl-3-Oβ-D-glucop...