J Ethnopharmacol
February 2014
Ethnopharmacological Relevance: Danggui (Chinese Angelica root; Dong quai; Angelica sinensis (Oliv.) Diels.) is a traditional Chinese herbal remedy with a long history of use in China, Korea and Japan.
View Article and Find Full Text PDFTwo new furanonaphthoquinones, (3R)-7-methoxy-α-dunnione (5) and (3R)-6-hydroxy-7-methoxy-α-dunnione (6), along with the known (3R)-dunnione (1), (3R)-α-dunnione (2), (3R)-7-hydroxy-α-dunnione (3), and 1-hydroxy-2-methylanthraquinone (4), were isolated from in vitro cultures of Streptocarpus dunnii. The structures of compounds 5 and 6 were established by spectroscopic means. This is the first report of hydroxylated furanonaphthoquinones in a Streptocarpus species.
View Article and Find Full Text PDFAn in vitro T-cell migration assay has been established that can be used to study the effects of compounds on the development of T-cell polarisation with HuT-78 T lymphocytes. This assay indicates the ability of compounds tested to inhibit the inflammatory response by decreasing LFA-1-mediated T-cell motility. The effect of a series of naturally occurring quinone isolates on motility has been evaluated in this assay.
View Article and Find Full Text PDFBackground And Aims: Representatives from Papaver, Roemeria, Stylomecon and Meconopsis were studied to elucidate phylogenetic relationships between Papaver and these closely allied genera.
Methods: Two molecular data sets were used individually and combined and included sequences from the internally transcribed spacer region (ITS) of 18S-26S nuclear ribosomal DNA and the trnL intron and the trnL-trnF intergenic spacer region of plastid DNA.
Key Results: Parsimony analysis demonstrated that the genus is not monophyletic unless the closely related Roemeria, Stylomecon and Meconopsis cambrica are included in a revised circumscription of Papaver.
The biotransformation of a series of aliphatic and aromatic ketones by five cultures of photosynthetic microalgae is reported. The test substrates include the monoterpenoid ketones carvone and menthone and a series of aromatic ketones related to and including acetophenone. All of the test organisms show some degree of specificity and stereoselectivity in the biotransformation of substrates.
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