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13 резултати
Three new guaiane sesquiterpene lactones from rhizomes of Curcuma wenyujin.
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Three new guaiane sesquiterpene lactones (4S)-4-hydroxy-gweicurculactone (1), zedoalactone G (2), and (1R, 4R, 5S, 10S)-zedoalactone B (3), and three known guaiane sesquiterpene lactones, including zedoarolide B (4), zedoalactone B (5), and a new natural product (+)-zedoalactone A (6), were isolated
Two new guaiane-type sesquiterpenes from Curcuma kwangsiensis and their inhibitory activity of nitric oxide production in lipopolysaccharide-stimulated macrophages.
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Two new guaiane-type sesquiterpenes, kwangsiensis A and B (1-2) were isolated from the roots of Curcuma kwangsiensis. Their structures were elucidated by extensive spectroscopic methods, including NMR, circular dichroism (CD) and high-resolution mass-spectrometry. The anti-inflammatory activity of
Transannular cyclization of (4S,5S)-germacrone-4,5-epoxide into guaiane and secoguaiane-type sesquiterpenes.
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Germacrone (1) and (4S,5S)-germacrone-4,5-epoxide (2) were isolated, along with guaiane and secoguaiane-type sesquiterpenes, from Curcuma aromatica plants. Compound 2 was derived from 1 and cyclized through transannular (T-A) reactions into various guaiane and secoguaiane-type sesquiterpenes in C.
Guaiane-type sesquiterpenes from Curcuma wenyujin and their inhibitory effects on nitric oxide production.
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Four new guaiane-type sesquiterpenes (1S,4S,5S,10R)-zedoarondiol, zedoalactones D, E, and F (1-4), along with 10 known ones (5-14), were isolated from Curcuma wenyujin Y.H. Chen et C. Ling. The structures of these new compounds were elucidated by spectroscopic methods. The inhibitory effects of
Guaiane-type sesquiterpenes from Curcuma phaeocaulis and their inhibitory effects on nitric oxide production.
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Ten new guaiane-type sesquiterpenes (1-10), phaeocaulisins A-J, and 18 known guaiane derivatives were isolated from rhizomes of Curcuma phaeocaulis. Their structures were established on the basis of extensive spectroscopic analyses, X-ray crystallographic analysis, and comparison with literature
Curcumol induces cell cycle arrest in colon cancer cells via reactive oxygen species and Akt/ GSK3β/cyclin D1 pathway.
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BACKGROUND
Curcuma kwangsiensis S. G. Lee & C. F. Liang (Guangxi ezhu, in Chinese) belongs to the Zingiberaceae family, has been used as a traditionally Chinese medicine nearly 2000 year. Curcumol is one of the guaiane-type sesquiterpenoid hemiketal isolated from medicine plant Curcuma kwangsiensis
Sesquiterpenoid Compounds from Curcuma kwangsiensis.
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Two previously undescribed guaiane-type sesquiterpenes (1 and 2), a pair of new salvialane-type sesquiterpenes (3a and 3b), together with 11 known compounds were isolated and purified from the rhizomes of Curcuma kwangsiensis. Their structures were elucidated by the extensive spectroscopic data (1D-
Four new sesquiterpenes from the rhizomes of Curcuma phaeocaulis and their iNOS inhibitory activities.
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Three new guaiane-type sesquiterpenes named phaeocaulisins K-M (1-3), and one germacrane-type sesquiterpenoid with new ring system of 1,5- and 1,8-ether groups named phagermadiol (4), were isolated from rhizomes of Curcuma phaeocaulis. Their structures were established based on extensive
Sesquiterpenes from the rhizomes of Curcuma heyneana.
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Four new germacranes [heyneanones A-D (1-4)], three new guaianes [4,10-epizedoarondiol (5), 15-hydroxyprocurcumenol (6), 12-hydroxycurcumenol (7)], and two new spirolactones [curcumanolides C (8) and D (9)] were isolated from the rhizomes of Curcuma heyneana together with 13 known sesquiterpenes and
Isolation and identification of phase 1 metabolites of curcumol in rats.
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Curcumol is one of the major components of the essential oil of Curcuma wenyujin with the structure of a guaiane-type sesquiterpenoid hemiketal. It exhibits clear antitumor, antihepatic fibrosis, antioxidant, and antimicrobial activities. In this article, the metabolism of curcumol in rats was
Sesquiterpenoids from the Rhizomes of Curcuma phaeocaulis and Their Inhibitory Effects on LPS-Induced TLR4 Activation.
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Two new guaiane-type (2, 6) and one new furanogermacrane-type (11) sesquiterpenoids have been isolated along with twelve known compounds from an EtOAc-soluble extract of Curcuma phaeocaulis rhizomes. The structures of the isolated compounds were elucidated using a combination of NMR, MS, and
Sesqui- and Diterpenoids from the Radix of Curcuma aromatica.
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Eight new sesquiterpenoids (1-8), two new diterpenoids (9 and 10), and 17 known sesqui- and diterpenoids (11-27) were isolated from the radix of Curcuma aromatica. Among these compounds, 1 is an unprecedented guaiane with unique cyclopropane and furan functionalities, and 9 is the first atisane
Antiinflammation constituents from Curcuma zedoaroides.
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Curcuma zedoaroides, a Zingiberaceae species, has been used for snake bite antidote and wound care in Thailand. Seven compounds were isolated from the bioactive chloroform extract consisted of one new guaiane sesquiterpene lactone, 5-epiphaeocaulisin A (4) and one new diarylheptanoid,
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