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13 papers found.
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Expression of E-prostanoid receptors in nasal polyp tissues of smoking and nonsmoking patients with chronic rhinosinusitis

-Yan Peng, Su-Jie Wang, Yin-Ping Zhang. Project administration: Li Xie, Ai-Guo Liu, Xian-Song Wang. Resources: Ai-Guo Liu. Software: Li Xie, Li-Yan Peng. Supervision: Ai-Guo Liu, Li-Yan Peng ... , Xian-Song Wang. Data curation: Xian-Song Wang. Formal analysis: Xian-Song Wang. Funding acquisition: Ai-Guo Liu, Xian-Song Wang. Investigation: Ai-Guo Liu, Xian-Song Wang. Methodology: Li Xie, Li

Lyconadins G and H, Two Rare Lyconadin-Type Lycopodium Alkaloids from Lycopodium complanatum

Two rare lyconadin-type Lycopodium alkaloids, lyconadins G (1) and H (2), together with four known ones (3–6), were isolated from Lycopodium complanatum. The structures were determined on the basis of their spectroscopic analyses, and the absolute configuration of 1 was established by an X-ray crystallographic analysis. It is the first time to establish the absolute configuration...

The Relationships between Chemical and Genetic Differentiation and Environmental Factors across the Distribution of Erigeron breviscapus (Asteraceae)

Aims Erigeron breviscapus (Vant.) Hand.-Mazz. is an important, widely used Chinese herb with scutellarin, 1,5-dicaffeoylquinic acid, 3,5-dicaffeoylquinic acid and erigoster B being its major active compounds. We aimed to resolve the influence of biotic and abiotic factors on the concentrations of these compounds and to determine appropriate cultivation methods to improve the...

Carinatines A and B, Lycopodium Alkaloids from Phlegmariurus carinatus

Carinatine A (1), a C16N2-type Lycopodium alkaloid possessing a 5/6/6/6 ring system formed by a new C-4/C-12 bond, and carinatine B (2), the first derivative of lycojaponicumin C, along 16 known compounds, were isolated from the whole plant of Phlegmariurus carinatus. Their structures were elucidated based on the spectroscopic data. The two new isolates were no inhibitory...

Lycopodine-Type Alkaloids from Lycopodium japonicum

Three new lycopodine-type alkaloids, 4α-hydroxyanhydrolycodoline (1), 4α,6α-dihydroxyanhydrolycodoline (2), and 6-epi-8β-acetoxylycoclavine (3), and an artifact, lycoposerramine G nitrate (4), along with seventeen related known compounds, were isolated from the club moss Lycopodiumjaponicum Thunb. ex Murray (Lycopodiaceae). Their structures were elucidated by extensive...

Four new labdane-type diterpenoid glycosides from Diplopterygium laevissimum

Four new labdane-type diterpenoid glycosides, laevissiosides A-D (1–4) were isolated from the 95% ethanol extract of Diplopterygium laevissimum (Christ) Nakai, along with two known analogues, 18- β-D-glucopyranosyl ester-sclareol (5) and 18-hydroxy-sclareol (6). The structures of compounds 1–4 were elucidated by extensive 1D and 2D NMR spectroscopy as well as high-resolution MS...

Synthesis of l-Ascorbic Acid Lactone Derivatives

A small focused library which comprised of l-AA lactone derivatives was built with a facile method. This reported method was optimized by modifying the acidity of the solvent. As a result, 12 l-AA lactones were synthesized. Among these lactones, lactones 8–12 were new compounds. The cytotoxicity of these synthetic compounds were investigated.

Exploring of drug leads from diversity-oriented Michael-acceptor library derived from natural products

available in the online version of this article at http://dx.doi.org/ 10.1007/s13659-012-0071-7 and is accessible for authorized users. We thanked Mrs. Li-Yan Peng, Dr. Juan He, Dr. ZhengHong Pan, Dr. Xing

New Lycopodium alkaloids from Lycopodium obscurum

Three new Lycopodium alkaloids, obscurumines C-E (1–3), along with nine known compounds, were isolated from the club moss Lycopodium obscurum L. Structures of the new compounds were determined on the basis of their spectroscopic analysis and the relative configurations of 1 were established by X-ray crystallographic analysis. All the new isolates were tested for the...

Euglobal-IIIa, a novel acylphloroglucinol-sesquiterpene derivative from Eucalyptus robusta: absolute structure and cytotoxicity

Euglobal-IIIa (1), a novel acylphloroglucinol-sesquiterpene derivative, and a known analogue, have been isolated from leaves of Eucalyptus robusta. The structures was elucidated by extensive spectroscopic data and by comparison with data reported in literature, while the absolute configuration of 1 was determined by the X-ray diffraction analysis. Compound 1 exhibited comparable...

Chemical constituents from the aerial parts of Musella lasiocarpa

Phytochemical investigation of the aerial parts of the monotypic plant, Musella lasiocarpa, led to the isolation of four rare bicyclic diarylheptanoids, musellarins B-E (2–5), two new phenylphenalenones, 2-methoxy-9-(3′,4′-dihydroxyphenyl)-1Hphenalen-1-one (9), 2-methoxy-9-(3′-methoxy-4′-hydroxyphenyl)-1H-phenalen-1-one (10), a new acenaphtylene derivative, trans-(1S,2S)-3-(4...