A method by combination of centrifugal ultrafiltration (CUF) sampling with liquid chromatography-mass spectrometry (LC-MS) analysis was established to evaluate the DNA structure and sequence selectivity of the multiple compounds in a small molecule library. The developed method was applied to analyze the extracts of natural products Coptis chinensis Franch and Rheum palmatum (L.). From the obta...

Two new stilbenoids, 9-(4'-hydroxy-3'-methoxyphenyl)-10-(hydroxymethyl)-11-methoxy-5,6,9,10-tetrahydrophenanthro[2,3-b]furan-3-ol and 2-(4''-hydroxybenzyl)-3-(3'-hydroxyphenethyl)-5-methoxy-cyclohexa-2,5-diene-1,4-dione, together with the three known stilbenoids were isolated from the tubers of Pleione bulbocodioides (Franch.) Rolfe. Their structures were elucidated by spectroscopic methods.

In this paper, three new Phyllocoptini eriophyoid mite species from Yunnan Province, China are described and illustrated: Proiectus rodgeseta sp. nov. on Pinus armandii Franch. (Pinaceae), Proiectus granularpro sp. nov. on Pinus tabuliformis Carr. (Pinaceae) and Phyllocoptrutajuniperiana sp. nov. on Juniperus chinensis Linn. (Cupressaceae). All are vagrants causing no apparent damage to their h...

Although the word “love” appears less frequently in the Qur‟an than in the Bible, Love is a cornerstone of both Islam and Christianity. As the Bible and the Qur‟an agree on many things, why then do Muslims and Christians perceive each other so differently and so often misunderstand each other? Such a question, of course, deserves an in-depth, multi-faceted answer; however, we...

Two new a,b-unsaturated butyrolactone derivatives, 4-(400-hydroxybenzyl)-3-(30-hydroxy-phenethyl)furan-2(5H)-one (1) and 3-(30-hydroxyphenethyl)furan-2(5H)-one (2), together with one known phenolic compound (3), were isolated from the tubers of Pleione bulbocodioides (Franch.) Rolfe. Their structures were elucidated by analysis of spectroscopic data. # 2007 Wen Yuan Gao. Published by Elsevier B...