This article discusses on the natural compounds from the ant plant (Myrmecodia species, family: Rubiaceae). The ethyl acetate (EtOAc) extract from the tuber of M. platytyrea was fractionated by using medium pressure liquid chromatography, giving eight fractions (F1-F8). Those fractions were evaluated using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay. Fraction F5 was recorded as potent (EC50 = 21.57 ± 1.40 µg/mL). Then, it was purified by using column chromatography (CC) (mobile phase = chloroform: EtOAc). From the CC, ten fractions (F5F1-F5F10) were obtained and compound (1) was isolated from F5F3 via preparative thin layer chromatography (TLC). After spraying with anisaldehyde-sulphuric reagent, compound (1) gave a green TLC spot (Rf = 0.65, 100% CHCl3 , multiple development). The 1 H-Nuclear Magnetic Resonance (NMR) spectroscopy (500 MHz, CDCl3 ) was performed to determine the chemical framework of (1). This compound was identified as morindolide, having an iridoid structure. Meanwhile, the mass spectra for compounds (2) and (3) were analysed. The data presented the molecular ion at m/z 375 [M-H]- and 255, suggesting the formulation of 2-(2-methylbutyryl)phloroglucinol glucoside and a flavanone, respectively. From the literature, compound (1) was firstly isolated from a Chinese natural medicine, the dried root of Morinda officinalis (family: Rubiaceae). The flavonoids are also included as the biologically active compounds from Myrmecodia. In short, this is the first occurrence of morindolide from the ant plant.
Flavonoids

Flavonoid is one of interested compounds in treatment for cancers. The authors extracts flavonoid from the leaves Houttuynia cordata and tested on S-180 cancer cells that they cultured vitro in mice. This product has effects by inhibited the growth of ascite cancer. However, the studies on large mice models are needed to survey their survival, mortality as well as clinical course, biochemical, pathology, and side effects. Flavonoid has cytotoxic activity on S-180, and maintain excessive cytotoxic on that cells
Neoplasms ; Flavonoids ; Houttuynia ; Flavonoids

Studying the influence of temperature to the content of flavonoids in Flos Sophorae showed that the dried temperature make the significant changes the content of rutin and quercetin in Flos Sophorae. The rutin content increased when drying over a fire at 80oC-120oC, quercetin did not be changed much; at 140oC-180oC, the contents of rutin decreased slightly, quercetin increased slightly. At 200oC-220oC, the contents of rutin decreased clearly, quercetin increased clearly. These results can be applied for the standardization of Flos Sophorae using roasting methods for traditional medicines
Flavonoids ; Temperature

A flavonoid preparation was extracted from TanCuong tea leaves and was studied on the cultured cancer cells and on the thigh tumor in mice. Flavonoids from T©n C­¬ng tea leaves (FTC) exhibited anticarcinogenic activity in vitro. FTC inhibited the reproduction of Hep-2 (human' carcinoma cell); Sp-2/O (cancer cells from mouse bone marrow) and S180 (Sarcoma cell). The most activity is on S180. In vivo, the experiments have been done in white mice BA/bc showed that FTC inhibited tumor promotion in mice. In addition, FTC decreased the metastasis of S180 into liver and lung of mice.
neoplasms ; Flavonoids

The quantification and qualification of polyphenols from the buds of Mac Rat (Delavaya toxocarpa Franch) collected in Son La and Cao Bang in the years 2002, 2003 using colum silicagel and sephadex LH20 chromatography gave 2 pure components. Basing on the data of the spectrium of UV, IR1H-NMR and 13C-NMR, DEPT, 2 compounds-acid pcumaric and kaemferol were identified
Flavonoids ; Plants, medicinal ; Pharmacology

One bioactive flavonoid on brine shrimp test was isolated from leaves of Macaranga triloba (Blume) Muell-aRG...Its structure was elucidated based on spectral analysis, including UV, FT-IR, 1H-NMR, 13C-NMR, 13C-DEPT, and was determined as vitexin
Flavonoids ; Plant Leaves

The contents of polyphenol and flavonoid from leaves and fruits of tree Momordica charantia are higher than other medicinal plants. These components are very soluble in low acid medium and ethanol. In growth processing of tree Monordica charantia, the content of polyphenol and flavonoid increase in fruits and leaves, and after then it decrease little
Flavonoids ; polyphenols ; Momordica charantia

This study demonstrated that in vitro, flavonoids from Oroxylum indicum stimulated the hydrolyzing reaction of alpha-chymotrypsin on casein. The stimulative level was dependent on time exposure and concentration of the flavonoids. In vivo, Oroxylum indicum's flavonoids had anti-inflammatory effects in dextran-induced oedema of mouse paw. When Oroxylum indicum's flavonoids were combined with alpha-chymotrypsin, their anti-inflammatory activity was increased. The successful combination between flavonoids from Oroxylum indicum and alpha - CT contributed to study anti-inflammatory effect of flavonoid and alpha - CT. It may be necessary to further study on traditional and modern anti-inflammatory medication in combination with anti-inflammatory enzyme
Flavonoids ; Inflammation ; Pharmaceutical Preparations

Studying effect of total flavonoid extracts from Lonicera japonica Thunb on some index of lipidemia. Rats were drunk cholesterol at a dose of 0.5g/kg/24hours for 6 consecutive weeks in order to cause hyperlipidemia. The result showed that: flavonoid extracted from Lonicera japonica Thunb at a dose of 0.45g/kg and 0.9g/kg decreased plasma triglyceride, total cholesterol, LDL-C and increased HDL-C in white rats drunk cholesterol in vitro. The effects of flavonoid at the dose of 0.45g/kg and 0.90g/kg on some index of lipidemia were the same. There was no differences in increasing body weight of rats in all studied rat groups
Flavonoids ; Flowers ; Lonicera ; Hyperlipidemias

Sen gai plant (Zanthoxylum alatum Roxb) belongs to Rutaceae family, was used commonly in India, China, Vietnam as restorative, increasing blood flow, sweat, treating rheumatisms and liver diseases. β-sitosterol, stigmasterol, β-sitosterol-3-O-β-glucopyranosid, vitexin and isovitexin were isolated from leaves of Zanthoxylum alatum Roxb in Vietnam by column chromatography. Chemical structures of these compounds were identified by spectroscopic methods (MS, 1H, 13C NMR and DEPT)
Steroids ; Flavonoids ; Zanthoxylum