Seven new phenol derivatives, subversins A-E (-), subversic acid A () and -wortmannine G (); one new natural product, 4-hydroxy-7-methoxyphthalide (); and five known compounds (-) were isolated from the fungus CYH-17 collected from the Haima cold seep. The structures and absolute configurations of these compounds were determined via NMR, MS, optical rotation, electronic circular dichroism (ECD) calculation, X-ray diffraction analysis and comparison with the literature. Compounds and were two pairs of enantiomers.
View Article and Find Full Text PDFOne novel diketopiperazine derivative 8-methoxy-9-hydroxyl-fumitremorgin C (), together with twelve known compounds, was separated from the fungus CYH-5 collected from Haima cold seep. The structures of the compounds were identified by NMR, MS, optical rotation, hydrolysis reaction and comparing with literatures. Among them, compounds and exhibited inhibitory effect against bacteria.
View Article and Find Full Text PDFEthnopharmacological Relevance: Rheumatoid arthritis (RA) is a chronic inflammatory disease that is related to the aberrant proliferation of fibroblast-like synoviocytes (FLS). Wasp venom (WV, Vespa magnifica, Smith), an insect secretion, has been used to treat RA in Chinese Jingpo national minority's ancient prescription. However, the potential mechanisms haven't been clarified.
View Article and Find Full Text PDFEthnopharmacological Relevance: Cybister chinensis Motschulsky belongs to the family Dytiscidae. As a traditional Chinese medicine, the insect is called Longshi in the folk and is commonly used to treat enuresis in children and frequent urination in the elderly.
Aim Of The Study: Inflammation is involved in chronic kidney disease.
As a folk medicine of the Jingpo minority in Yunnan province, the venom of has been commonly used for the treatment of rheumatoid arthritis. Quality standardization of the wasp venom is a necessary step for its pharmaceutical research and development. To control the quality of the wasp venom, a method based on high-performance liquid chromatography (HPLC) was developed for chemical fingerprint analysis.
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