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15 risultati
Optimizing ultraperformance liquid chromatographic analysis of 10 diterpenoid compounds in Salvia miltiorrhiza using central composite design.
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A rapid, sensitive, reproducible, and accurate ultraperformance liquid chromatographic (UPLC) method was developed for the simultaneous determination of 10 diterpenoid compounds (tanshinone I, tanshinone IIA, cryptotanshinone, dihydrotanshinone I, 1,2-dihydrotanshinquinone, methylenetanshinquinone,
Antibacterial diterpenes from the roots of Salvia viridis.
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Three new diterpenes, salviviridinol, viridinol, viridone, five known diterpenes, sugiol, 1-oxoferruginol, ferruginol, aethiopinone and microstegiol, abietane and rearranged abietane diterpenes were isolated from the roots of Salvia viridis. These compounds were assayed against S. aureus ATCC 6538
[Chemical constituents in the roots of Salvia przewalskii Maxim].
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OBJECTIVE
To investigate the chemical composition of the root of Salvia przewalskii Maxim.
METHODS
Compounds were isolated by silica gel column chromatography. Structures of these compounds were elucidated by spectral analysis (EI-MS, FAB-MS, 1HNMR, 13CNMR, 1H-1H COSY, 1H-13C COSY, HMBC, NOESY) and
[Chemical constituents from Salvia przewalskii Maxim].
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The investigation on Salvia przewalskii Maxim was carried out to find the relationship of the constituents and their pharmacological activities. The isolation and purification were performed by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography, etc. Further
[The structure of trijuganone C from Salvia trijuga].
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From Salvia trijuga Diels 9 compounds were isolated and eight of them identified as ferruginol, sugiol, triacontanoic acid, tetratriacontanoic acid, octacosanoic acid, hexactecanoic acid, dl-homoserine and parahydroxybenzoic acid. Compound I a red needle crystal C20H20O5, mp 113-114 degrees C is a
Diterpenoids from Salvia prionitis.
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Seven diterpenoids, 3-ketosapriparaquinone ( 1), salvilenone, 3-hydroxysalvilenone ( 2), arucadiol, royleanone, sugiol, and ferruginol were isolated from the root of SALVIA PRIONITIS Hance (Labiatae); Compounds 1 and 2 are new natural products. The structure of 1 was established through the
Comparative phytochemical investigation of Salvia miltiorrhiza and Salvia triloba.
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From the aerial parts of Chinese Salvia miltiorrhiza Bunge a novel sesquiterpene (1), which possesses a rare substitution pattern, together with seven known abietane type diterpenes has been isolated. Structure 1 was elucidated on the basis of spectral analysis, including 2D-NMR spectroscopy,
Functional Integration of Two CYP450 Genes Involved in Biosynthesis of Tanshinones for Improved Diterpenoid Production by Synthetic Biology
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Cytochrome P450s (CYPs) are important enzymes in the secondary metabolism of plants and have been recognized as key players in bioengineering and synthetic biology. Previously reported CYP76AH1 and CYP76AH3, having greater than 80% sequence homology, played a continuous catalytic role in the
Cytochrome P450 promiscuity leads to a bifurcating biosynthetic pathway for tanshinones.
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Cytochromes P450 (CYPs) play a key role in generating the structural diversity of terpenoids, the largest group of plant natural products. However, functional characterization of CYPs has been challenging because of the expansive families found in plant genomes, diverse reactivity and
[Chemical constituents contained in Salvia castanea].
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OBJECTIVE
To investigate chemical constituents contained in Salvia castanea.
METHODS
The compounds were separated and purified by silica gel, macroporous resin, RP-C18 and Sephadex LH-20 column chromatography. The structures were identified on the basis of physicochemical property and spectral
A GC-MS method validation for quantitative investigation of some chemical markers in Salvia hypargeia Fisch. & C.A. Mey. of Turkey: Enzyme inhibitory potential of ferruginol
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In the present study, a GC-MS method used for quantitative screening of 26 compounds (sclareolide, sclareol, ferruginol, cryptanol, 6,7-dehydroroyleanone, suginal, 9,10-dihydro-7,8-dimethyl-2-(1-methylethyl) phenanthren-3-ol, sugiol, inuroyleanone, 12-demethylmulticauline, 7α-hydroxy-β-sitosterol,
Diterpenes from Salvia broussonetii transformed roots and their insecticidal activity.
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The new diterpenes brussonol (1) and iguestol (6alpha,11-dihydroxy-12-methoxy-abieta-8,11,13-triene) (2) with an icetexane and a dehydroabietane skeleton, respectively, have been isolated from hairy root cultures of Salvia broussonetii. Other previously known diterpenes, 7-oxodehydroabietane,
Salvisertin A, a New Hexacyclic Triterpenoid, and Other Bioactive Terpenes from Salvia deserta Root.
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Using various chromatographic methods, a new hexacyclic triterpenoid, 2β,3β,24β-trihydroxy-12,13-cyclotaraxer-l4-en-28oic acid (1), together with ten known compounds, 2α,3α,23-trihydroxyurs-12,20(30)-dien-28oic acid (2), 6,7-dehydroroyleanone (3), horminone (4), 7-O-methylhorminone (5), sugiol (6),
Diterpenoids including a novel dimeric conjugate from Salvia leriaefolia.
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Salvialeriafone (1), a novel diterpene-norditerpene conjugate, was isolated from Salvia leriaefolia. Additionally, two new abietane-type diterpenoids, salvialerial (2) and salvialerione (3), as well as four known compounds, sugiol (4), salvicanaric acid (5), dehydroroyleanone (6), and cariocal (7),
Aldose reductase inhibitory constituents of the root of Salvia miltiorhiza Bunge.
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The constituents of the MeOH extract of Salvia miltiorhiza BUNGE, which showed strong aldose reductase (AR) inhibitory activity, were examined, and two new abietane-type diterpenoids, danshenol A (1) and danshenol B (2), were isolated together with six known ones: dihydrotanshimme I (3),
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