Yan-xia Gao

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Systematic phytochemical investigations on Abies fabri resulted in the isolation of 94 compounds, consisting of 68 terpenoids, six lignans, seven flavonoids, and 13 other miscellaneous chemical constituents. Their structures were elucidated on the basis of spectroscopic methods, and the absolute configurations of three of these previously unknown compounds(More)
Nine triterpenoids (neoabiestrines A-I, 1-9) including six rearranged lanostanes (1-6) and a rare cycloart-7-ene (7) were isolated from Abies recurvata together with ten known compounds. Their structures were determined by detailed analysis of NMR and MS spectroscopic data. The absolute configurations of 1 and 8 were determined by Cu-Ka X-ray(More)
Members of the genus Actinomyces are strongly associated with human diseases. We present here the complete genome sequence of Actinomyces hongkongensis HKU8T, which consists of one circular chromosome. The strain characteristically contains various genes encoding for enzymes involved in arylamidase utilization.
This paper studied the change of soil physical and chemical properties under eleven vegetation restoration patterns (1 kind of secondary forest, 2 kinds of pure coniferous plantations, 5 kinds of evergreen broad-leaved plantations, 2 kinds of conifer and broad-leaved mixed plantations, and 1 kind of shrub) typical in Daqingshan of Guangxi. Obvious(More)
Dendrobium monilforme is an endangered Orchidaceae species distributed in Southwest China. Here we report the complete chloroplast (cp) genome sequence and the cp genomic features of D. monilforme. The genome is 152,136 bp long with 129 genes comprising 83 protein-coding genes, 40 tRNA genes and six rRNA genes. Most of the genes occurred in a single copy,(More)
During a survey on chemical constituents of Abies nukiangensis, seven previously unreported compounds, including six triterpenes (1-6) and one phenol (7) were isolated and characterized, together with 37 known miscellaneous chemical constituents. The structures of compounds 1-7 were established mainly by extensive analysis of the 1D and 2D NMR, as well as(More)
Dendrobium hancockii Rolfe is an endangered Orchidaceae species distributed in Southwest China. Here, we reported the complete chloroplast (cp) genome sequence and the cp genomic features of D. hancockii. The genome was 152,159 bp long with 129 genes comprising 83 protein-coding genes, 40 tRNA genes, and 6 rRNA genes. Most of the genes occurred as a(More)
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