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Four Yucaipa-like viruses of avian paramyxovirus serotype 2 (APMV-2) were isolated in China from the imported Gouldian Finch (Chloebia gouldiae) and broilers in 1998-2002, and were named F4, F6, F8, and NK, respectively. Examined under electron microscope, the isolates were found to be round in shape and varying in size. The results of the hemagglutination(More)
OBJECTIVE To isolate and identify the chemical constituents from the whole plant of Pyrethrum tatsienense, which has been used as traditonal herb medicine in the treatment of some diseases. METHODS The compounds were isolated by column chromatography and their structures were elucidated through spectroscopic analysis (NMR). RESULTS Six compounds were(More)
Two novel and eight known triterpenoids were isolated from alcoholic extract of the whole plant of Pyrethrum tatsienense. The structures of new compounds were elucidated as olean-12-en-3beta,11alpha,16beta-triol-3-O-palmitate (1), ursa-12-en-3beta,11beta,16beta-triol-3-O-palmitate (2) by spectroscopic methods including intensive 2D NMR techniques (H1-H1(More)
OBJECTIVE To study the chemical constituents from Clematis brevicaudata. METHODS The compounds were isolated by column chromatography and their structures were elucidated through spectroscopic analysis (NMR). RESULTS Eight compounds were isolated and identified as: palmitic acid (1), 1-docosanol (2), pentacosanoic acid-2', 3'-dihydroxypropyl ester (3),(More)
OBJECTIVE To study the alkaloid constituents of Corydalis adunca. METHOD The constituents were isolated on silica gel column and their structures were elucidated by IR, NMR, MS data. RESULT Eight alkaloid compounds were isolated from alcohol extracts of the herb of C. adunca, and identified as dihydrosanguinarine (I), tetrahydrocolumbamine (II),(More)
This study began with the goal of identifying constituents from Zyzzya fuliginosa extracts that showed selectivity in our primary cytotoxicity screen against the PANC-1 tumor cell line. During the course of this project, which focused on six Z. fuliginosa samples collected from various regions of the Indo-Pacific, known compounds were obtained consisting of(More)
OBJECTIVE To optimize the conditions of extraction and purification of isocorydine from Dicranostigma leptopodum. METHODS Extraction conditions of isocorydine were selected on the basis of orthogonal experimental design, the static adsorption/desorption experiments were used to evaluate the optimum resin. RESULTS The optimum extraction parameters were(More)
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