共查询到20条相似文献,搜索用时 46 毫秒
1.
Nine compounds including six cycloartane glycosides cyclosieversiosides A, B, F, G, and H and astrasieversianin IX; β-sitosterol, β-sitosterol β-D-glucopyranoside, and D-3-O-methyl-chiro-inositol were isolated and identified from roots of Astragalus sieversianus Pall. (Leguminosae) growing in the Republic of Kyrgyzstan.
Presented at the 6th International Symposium on the Chemistry of Natural Compounds (SCNC, Ankara, Turkey, June 28–29, 2005.
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Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 253–256, May–June, 2008. 相似文献
2.
Aerial parts of Sideritis cilicica Boiss. & Bal. and Sideritis bilgerana P.H. Davis (Lamiaceae) were hydrodistilled to obtain essential oils that were then analyzed by GC and GC/MS. β-Pinene (39%),
α-pinene (28%), and β-phellandrene (20%) were the main components in the oil of S. cilicica, while β-pinene (48%), and α-pinene (32%) were the major constituents in the oil of S. bilgerana. The antimicrobial activities of the oils were evaluated by using the microdilution broth method. Both of the oils showed
good inhibitory effects on C. albicans.
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Published in Khimiya Prirodnykh Soedinenii, No. 6, pp. 559–561, November–December, 2005. 相似文献
3.
A. R. Jassbi M. Mehrdad M. Soleimani M. Mirzaeian A. Sonboli 《Chemistry of Natural Compounds》2005,41(4):415-417
Analyses of the essential oils of Bunium elegans (Fenzl) Freyn and B. caroides (Boiss.) Hausskn. ex Bornm., using GC, GC/MS, and13 C-NMR spectroscopy resulted in identification of their chemical constituents. The oils of both species contain mainly the
sesquiterpene hydrocarbons germacrene-D and E-caryophyllene, which amounted to 24.1% and 38% for B. elegans and 22.1% and 26.6% for B. caroides respectively. The oil of B. caroides contained the monoterpenes α-pinene and Z-β-ocimene in 4.1 and 5.9% respectively, while traces of monoterpenes were detected
for B. elegans. On the other hand, in B. caroides the phenylpropanoid derivatives asaricin (7.5%) and dillapiole (10.2%) were among the major constituents.
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Published in Khimiya Prirodnykh Soedinenii, No. 4, pp. 335–336, July–August, 2005. 相似文献
4.
The essential oil of Nepeta involucrata (Bunge) Bornm. (Lamiaceae) obtained by hydrodistillation from the aerial parts during the flowering stage was analyzed by
GC and GC-MS. Forty-eight compounds representing 97.2% of total oil were identified. The main compounds of the oil were 1,8-cineol
(23.1%), germacrene-D (15.1%), and β-pinene (12.2%). No traces of nepetalactone isomers were found as oil constituents.
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Published in Khimiya Prirodnykh Soedinenii, No. 6, pp. 562–564, November–December, 2005. 相似文献
5.
N. N. Sidamonidze R. O. Vardiashvili M. O. Isakadze E. I. Chachua 《Chemistry of Natural Compounds》2007,43(3):250-252
Addition of ethyl-, propyl-, and n-butylmercaptans to 1-O-allyl-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose in the presence of benzoyl peroxide catalyst was studied for the first time. The products were 1-O-(3-ethylthiopropyl)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose, 1-O-(3-propylthiopropyl)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose, and 1-O-(3-butylthiopropyl)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose. Deacetylation of 1-O-(3-ethylthiopropyl)-2,3,4,6-tetra-O-acetyl-β-D-galactopyranose produced 1-O-(3-ethylthiopropyl)-β-D-galactopyranose.
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Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 209–211, May–June, 2007. 相似文献
6.
Qu Lingbo Chen Xiaolan Lu Jiansha Yuan Jingwei Zhao Yufen 《Chemistry of Natural Compounds》2005,41(5):565-568
Six substances were isolated from the branches and leaves of the Chinese herb Leptopus Chinensis (Bunge) Pojark. by column chromatography for the first time. Their structures were elucidated as 3α-hydroxyfriedelan-2-one,
saccharose, triacontanol, friedelane-2α,3β-diols, β-sitosterol-3-O-β-D-glucoside, and β -sitosterol on the basis of x-ray,
chemical, and spectroscopic methods.
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Published in Kimiya Prirodnikh Soedinenii, No. 5, pp. 462–464, September–October, 2005. 相似文献
7.
B. Tirillini A. Ricci G. Pintore M. Chessa L. Menghini R. Pagiotti 《Chemistry of Natural Compounds》2007,43(1):44-46
The essential oil composition of aerial parts of Santolina etrusca Marchi & D’Amato from Italy was analyzed by GC and GC/MS. Twenty-nine compounds of oil were identified representing 97.1%
of the oil. The most abundant compounds were viridiflorol (17.9%), terpinen-4-ol (14.4%), myrcene (11.8%), β-pinene (9.9%),
and cis-muurola-4(14),5-diene (9.9%). To the best of our knowledge, this is the first report on the GC/MS determination of the essential
oil composition of S. etrusca.
Published in Khimiya Prirodnykh Soedinenii, No. 1, pp. 38–39, January–February, 2007. 相似文献
8.
Huang Yun Cui Lijian Zhan Wenhong Dou Yuhong Wang Yongli Wang Qiang Zhao Ding 《Chemistry of Natural Compounds》2007,43(6):672-677
A novel steroidal saponin, along with 12 known steroidal compounds, was isolated from the rhizomes of Paris polyphylla var. chinensis. Spectral data, including two-dimensional NMR, showed that the structure of the novel saponin was 3β,21-dihydroxypregnane-5-en-20S-(22,16)-lactone-1-O-α-L-rhamnopyranosyl(1→2)-[β-D-xylopyranosyl(1→3)]-β-D-glucopyranoside. The isolated steroidal compounds were evaluated for their cytotoxic activity on human gastric cancer cell
line HepG2, SGC7901, BxPC3. Diosgenin-3-O-α-L-rhamnopyranosyl(1→2)[α-L-rabinofuranosyl(1→4)]-β-D-glucopyranoside exhibited the most potent cytotoxic activity among the isolated steroids.
Published in Khimiya Prirodnykh Soedinenii, No. 6, pp. 556–560, November–December, 2007. 相似文献
9.
T. V. Kharlamova 《Chemistry of Natural Compounds》2007,43(4):391-394
The alkylation of 1,6,8-trihydroxy-3-methylanthraquinone (frangula-emodin) by α-bromoalkylmethylketones was investigated. Hydroxyls in the 1-and 8-positions of the β-derivatives were O-acylated. The compositions and structures of the prepared compounds were confirmed by elemental analysis and UV, IR, PMR,
and 13C NMR spectroscopy.
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Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 324–326, July–August, 2007. 相似文献
10.
Hydrodistilled volatile oils from crushed dry stems, leaves, and roots of Prangos latiloba Korov. (Umbelliferae) growing wild in Sabzevar (Iran) were analyzed by GC and GC/MS. Eight compounds constituting 84.72% of stem oil, twelve compounds
constituting 95.39% of leaf oil, and nine compounds constituting 88.73% of root oil have been identified. The main components
of stem oil were γ-cadinene (30.39%), α-pinene (25.47%), and sabinene (12.55%). The main components of leaf oil were germacrene
D (27.79%), α-pinene (17.81%), β-caryophyllene (12.75%), and β-pinene (11.23%). The main components of root oil were spathulenol
(29.5%), 1,8-cineol (19.42%), p-cymene (17.03%), and α-bisabolol (15.33%).
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Published in Kimiya Prirodnikh Soedinenii, No. 5, pp. 443–444, September–October, 2005. 相似文献
11.
The essential oil from the aerial parts of Rhabdosciadium strausii (Apiaceae) growing wild in Iran was obtained by hydrodistillation and analyzed by GC and GC-MS. Forty-two compounds were
characterized, representing 97.5% of the total oil. β-Elemene (37.9%) and germacrene-D (32.2%) were identified as the major
constituents.
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Published in Khimiya Prirodnykh Soedinenii, No. 4, pp. 333–334, July–August, 2005. 相似文献
12.
G. Ozek T. Ozek K. H. C. Baser E. Hamzaoglu A. Duran 《Chemistry of Natural Compounds》2007,43(6):667-671
The component composition of essential oils produced by steam distillation from flower heads, leaves, and stems of Salvia anatolica (Lamiaceae), a recently described new species endemic from Turkey, was studied by GC/FID and GC/MS. A total of 127 volatile
components representing 96% of the oil was identified in essential oil from flower heads and leaves. It was found that the
principal oil components of flower heads and leaves were α-pinene (10.9%), β-pinene (6.7%), α-copaene (6.3%), heptacosane (6.2%), and hexadecanoic acid (5.0%). A total of 109 volatile compounds representing 87.9% of
the oil was characterized in essential oil isolated from stems. The principal oil components of stems were identified as hexadecanoic
acid (27.2%), tetradecanoic acid (15.2%), dodecanoic acid (5.5%), and α-copaene (5.0%).
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Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 552–555, November–December, 2007. 相似文献
13.
E. A. Khamidullina A. L. Vereshchagin S. A. Medvedeva 《Chemistry of Natural Compounds》2005,41(4):426-428
The newditerpene alcohol (1) in addition to the known metabolitesisoagatholal (2) and β-sitosterol glucoside (as the tetraacetate) (3) were isolated from buds of Siberian pine. The structure of the new compound was established as abieto-8(14)-en-18-ol 9α,13α-endoperoxide.
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Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 343–344, July–August, 2005. 相似文献
14.
The new cycloartane glycoside cycloorbicoside D, which has the structure 23ξ,24ξ-cycloartan-3β6α,16β,23,24,25-hexaol 3-O-β-D-xylopyranoside,
was isolated from the aerial part of Astragalus orbiculatus Ledeb. (Leguminosae).
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Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 345–346, July–August, 2005. 相似文献
15.
L. E. Nikitina V. A. Startseva V. V. Plemenkov S. A. Dieva O. A. Lodochnikova I. A. Litvinov 《Chemistry of Natural Compounds》2007,43(3):263-267
A new type of S-containing terpene lactones was produced by the reactions of limonene-1,2-oxide and β-pinene-α-oxide with mercaptoacetic acid.
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Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 220–223, May–June, 2007. 相似文献
16.
Xiu-Kui Qu Lan-Ying Zhu Ling Li Xi-Lian Wei Feng Liu De-Zhi Sun 《Journal of solution chemistry》2007,36(5):643-650
As a continuation of our previous investigation, interactions between cyclodextrin (β-CD), γ-cyclodextrin (γ-CD) and alkyl trimethylammonium bromides in aqueous solutions have been studied with titration calorimetry and 1H NMR at 298.15 K. The results are discussed in terms of the amphiphilic interaction of CD with surfactants and the iceberg
structure formed by water molecules existing around the hydrophobic tail of surfactant molecules. The stoichiometry of the β-CD–surfactant system is 1:1 whereas that of the γ-CD–surfactant system is 1:2. The corresponding formation enthalpy (negative) of the complexes of the two systems decreases
with an increase in the number of carbon atoms (n) in hydrophobic chain of surfactant molecule, C
n
H2n+1, whereas the entropy increases with the enlargement of n. 相似文献
17.
E. D. Khairitdinova E. M. Tsyrlina L. V. Spirikhin N. I. Fedorov M. S. Yunusov 《Chemistry of Natural Compounds》2005,41(5):575-577
The known alkaloids deltaline, methyllycaconitine, elasine, and the new norditerpene alkaloid alpinine were isolated from
the aerial part of Delphinium alpinum. The structure of the last was proposed as 1α,6β, 16β-trimethoxy-7-hydroxy-8-ethoxy-14α-propionyloxy-4β-(2″-methyl)succinylanthranoyloxymethyl-N-ethylaconitane
on the basis of PMR, 13C NMR, IR, and mass spectra.
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Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 469–471, September–October, 2005. 相似文献
18.
New Oligomeric Proanthocyanidins from Bark of <Emphasis Type="Italic">Platanus orientalis</Emphasis>
S. Z. Nishanbaev Z. A. Kuliev N. K. Khidyrova A. D. Vdovin N. D. Abdullaev Kh. M. Shakhidoyatov 《Chemistry of Natural Compounds》2005,41(4):404-409
Two oligomeric proanthocyanidinglycosides were isolated from bark of Platanus orientalis. Their structures and relative configurations were established as 7-O-β-D-Glcp-(−)-epicatechingallate-(4β-8)-(−)-epicatechin-(4β-8)-(−)-epicatechin-(4β-8)-5-O-β-D-Glcp-epicatechingallate
(Pl-1) and 7-O-β-D-Glc→6-O-β-D-Glcp-(−)-epigallocatechingallate-(4β-8)-(+)-catechingallate-(4β-8)-(+)-catechingallate-(4β-8)-(−)-epigallocatechingallate-(4α-8)-(−)-epicatechin-(4β-8)-[5-O-β-D-Glcp-→6-O-β-D-Glc→6-galloyl(−)-epigallocatechingallate
(Pl-7).
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Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 325–330, July–August, 2005. 相似文献
19.
Saulute Budriene Natalija Gorochovceva Tatjana Romaskevic Lyubov V. Yugova Aldona Miezeliene Gervydas Dienys Asta Zubriene 《Central European Journal of Chemistry》2005,3(1):95-105
β-galactosidase from Penicillium canescens was immobilized on chitosan, sepharose-4B, foamable polyurethane and some other carriers. The highest yield of immobilization
(up to 98%) was obtained by using chitosan as a carrier. The optimum pH and temperature were not significantly altered by
immobilization. High stability of immobilized β-galactosidase during storage was demonstrated. Efficient lactose saccharification
(over 90%) in whey was achieved by using immobilized β-galactosidase. 相似文献
20.
The new norditerpenoid alkaloid shawurensine in addition to β-sitosterol and the known alkaloids elatin, delbrulin, and methyllycaconitine were isolated from Delphinium shawurense. A structure for shawurensine was proposed based on spectral data.
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Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 248–250, May–June, 2007. 相似文献