Studies on chemical constituents of Illicium simonsii / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents from the active fractions against HIV in vitro, a crude ethanolic extract of Illicium simonsii.</p><p><b>METHOD</b>The compounds were isolated with column chromatography methods. MS and NMR spectroscopic methods were used to determine the structures of the compounds.</p><p><b>RESULT</b>Seven compounds were isolated from the active fractions against HIV in vitro of the 90% ethanol extract and their structures were elucidated as (+)-catechin (1), (-)-epicatechin (2), (+)-catechin 3-O-alpha-L-rhamnopyranoside (3), kaempferol 3-O-alpha-L-rhamnopyranoside (4), quercetin 3-O-alpha-L-rhamnopyranoside (5), erigeside C (6) and daucosterol (7).</p><p><b>CONCLUSION</b>Seven compounds were isolated from this plant for the first time, but none of them exhibited active against HIV in vitro. Compounds 3 and 6 were isolated from this genus for the first time.</p>

Advances in research of chemical constituents and pharmacological activites of Bauhinia / 中国中药杂志

The research advances based on the related references were summarized in the last thirty years. Bauhinia contained many kinds of chemical constituents, primarily including flavanoids, steroids, terpenoid and so on, some of them were firstly obtained from the nature. Many plants of the Bauhinia are used in traditional medicine for their interesting biological activities such as antidiabetic, antiinflammatory, antimicrobial, analgesic, astringent and diuretic effects. This paper gives an overview of phytochemical and pharmacological research in Bauhinia, and it has been classified accordding to the chemical structure characteristics. To provide more material to draw on for further development and utilization resources of Bauhinia.