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[Monomeric Indole Alkaloids from Kopsia officinalis.].
Ten monomeric indole alkaloids have been identified from the roots of KOPSIA OFFICINALIS. Four of them are known: (-)-kopsinine 1, (+)-5,22-dioxokopsane 2, (-)-tetrahydroalstonine 4, and… Expand
New 1-O-acyl alpha-L-rhamnopyranosides and rhamnosylated lactones from Streptomyces sp., inhibitors of 3 alpha-hydroxysteroid-dehydrogenase (3alpha-HSD).
Chemical screening with extracts of Streptomyces sp. (strain GT 61150) resulted in the detection, isolation, and structure elucidation of two new acyl alpha-L-rhamnopyranosides (1 and 2) and three… Expand
[Chemical investigation of genus Hedyotis. II. Isolation and identification of iridoids from Hedyotis chrysotricha].
- J. Peng, X. Z. Feng, G. Li, X. Liang
- Biology, Medicine
- Yao xue xue bao = Acta pharmaceutica Sinica
- 1 December 1997
Many species of genus Hedyotis (Rubiaceae) were used as folk medicine for treatment of cold, inflammation, cancer and etc. in China. The alcoholic extract of the whole plant of H. chrysotricha showed… Expand
Chemical constituents of Armillaria mellea mycelium. I. Isolation and characterization of armillarin and armillaridin.
Two new sesquiterpenoid aromatic esters, armillarin and armillaridin, have been isolated from the artificially cultured mycelium of ARMILLARIA MELLEA (Vahl. ex Fr.) Quel. (Tricholometaceae). On the… Expand
Isolation and structure elucidation of armillaricin1.
From the petroleum ether extracts of the artificially cultured mycelium of ARMILLARIA MELLEA, a novel sesquiterpenoid aromatic ester named armillaricin has been isolated by silica gel column… Expand
Isolation and structures of two new sesquiterpenoid aromatic esters: armillarigin and armillarikin1.
The continued investigation of the mycelial extract of ARMILLARIA MELLEA (Vahl.ex Fr.) Quel. (Tricholomelaceae) led to the isolation of two new sesquiterpenoid aromatic esters, named armillarigin (… Expand
Monomeric Indole Alkaloids from Ervatamia hainanensis.
Eleven monomeric indole alkaloids have been isolated from the roots of Ervatamia hainanensis. Nine of them are known: coronaridine 1, coronaridine hydroxyindolenine 2, heyneanine 3, vobasine 4,… Expand
Two Novel Protoilludane Norsesquiterpenoid Esters, Armillasin and Armillatin, from Armillaria mellea.
Two novel protoilludane norsesquiterpenoid esters, named armillasin and armillatin, have been isolated from the artificially cultured mycelium of ARMILLARIA MELLEA (Tricholomataceae). Their… Expand
Feigrisolides A, B, C and D, new lactones with antibacterial activities from Streptomyces griseus.
- Y. Q. Tang, I. Sattler, R. Thiericke, S. Grabley, X. Z. Feng
- Biology, Medicine
- The Journal of antibiotics
- 25 September 2000
Four new lactone compounds, named feigrisolides A to D (1 to 4), have been isolated from Streptomyces griseus. The chemical structures were determined by detail analysis of their spectroscopic data… Expand
[New oxindole alkaloid glycosides from Uncaria sinensis].
Two 16-carboxy derivatives of pentacyclic oxindole alkaloids and its glucopyranosyl esters have been isolated from the ethanolic extract of the leaves of Uncaria sinensis (Olive.) Havil. These… Expand