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Bioassay-guided fractionation of the aerial parts of Pilea mongolica (Urticaceae) afforded two cytotoxic triterpenoids, epi-oleanolic acid ( I ) and oxo-oleanolic acid ( II ). The structures of the compounds were confirmed by spectral and synthetic evidences. Compound I and compound II exhibited...
5-Aryl-2,3-dihydroimidazo(2,1- a )isoquinolines were reported to have strong antitumor activity and one of the derivatives such as 5-(4′-(piperidinomethyl)phenyl)-2,3-dihydroimidazo(2,1- a ) isoquinoline (1, SDZ 62–434) was found to be more effective than the clinical cytostatic agent...
A novel synthetic method was developed for 3-hydroxyhomoisoflavanone. Treatment of aryllithium 14 to aldehyde 13 which was obtained from dihydroxylation of 10 , followed by cycloetherification to give 3-hydroxyhomoisoflavanones.
Purine nucleosides were chlorinated by the reaction of acyl chloride in DMF with MCPBA under mild conditions with moderate yields. And, satisfactory method for the synthesis of ribonucleoside-3′,5′-cyclic phosphates and its characterization by 1 H and 13 C nmr spectroscopy is described.
A C-glycosyl chromone, named as 7-O-methylaloesinol, was newly isolated from the leaf exudate of Aloe capensis and identified as 8-C-β-D-glucopyranosyl β-2-(2-(R)-hydroxypropyl)-7-methoxy-5-methyl-4H-1-benzopyran-4-one by chemical and spectral evidence.
The aqueous extract of Siegesbeckia pubescens (SPAE) inhibited compound 48/80-induced systemic anaphylaxis 100% with the dose of 1.0, 0.5 mg/g body weight (BW) at 1 h before or 5 min, 10 min after intraperitoneal injection of compound 48/80. The passive cutaneous anaphylaxis (PCA) reaction also...
A new method based on the chemical reaction has been devised for the sequential analysis of reducing oligosaccharides using 8-amino-2-naphthalenesulfonic acid (ANS), a fluorescent precolumn derivatization reagent for reducing saccharides. The procedure established includes 1) the derivatization...
This research was performed to screen the cytotoxic activities of some pharmaceutical insect relatives. Cytotoxic activities of total extract and fractions of hexane, ethyl acetate, methanol, water and boiling water were extracted from four pharmaceutical insect relatives: the Chinese gall, the...
An attempt to estabilish the relationship between anti-cell adhesive action of phenylacetylshikonin anallogues and their cytotoxicity against A549 cells was done. In the one hour incubation with A549 cells, α-methoxyphenylacetyl-( 9 ), α-acetoxyphenylacetyl-( 13 ),...
The stability of ondansetron and fluconazole in 5% dextrose injection and normal saline during simulated Y-site injection at room temperature was studied. Ondansetron 0.03, 0.1 and 0.3 mg/ml were admixed 1∶1 with fluconazole 2 mg/ml. The solutions were stored at room temperature and samples...
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