共查询到20条相似文献,搜索用时 31 毫秒
1.
M. Kh. Dzhukharova Z. Saatov N. D. Abdullaev N. K. Abubakirov 《Chemistry of Natural Compounds》1994,30(6):680-683
A new brahuisterone glycoside — silenoside F — has been isolated from the epigeal part ofSilene brahuica Bois. (fam. Caryophyllaceae). Its structure has been established by an analysis of spectral characteristics: 3β,5,14α,22R,25-pentahydroxy-5β-cholest-6-one
3-O-β-D-glucopyranoside.
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89
14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 734–737, November–December, 1994. 相似文献
2.
U. A. Baltaev 《Chemistry of Natural Compounds》1991,27(6):712-713
A new ecdysteroid (rhapisterone B) has been isolated from the seeds ofRhaponticum cathamoides (Willd.) Iljin. (familyCompositae). It has been shown that it is 2β, 3β, 11α, 14α, 20R, 24ξ-hexahydroxy-5β-cholest-7-en-6-one.
Institute of the Chemistry of Plant Substances, Uzbek Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii,
No. 6, pp. 806–808, November–December, 1991. 相似文献
3.
U. T. Teshebaeva A. N. Sultankhodzhaev A. A. Nishanov 《Chemistry of Natural Compounds》1999,35(6):659-660
A new alkaloid called akiramidine is isolated from the aerial part ofAconitum kirinense. The structure 6β,14α,16β-trimethoxy-1α,4β,8β-trihydroxy-N-ethylaconitane is proposed based on spectral data and confirmed
by chemical transformation from akiramine.
Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 774–776, November–December, 1999. 相似文献
4.
I. V. Evsikova S. K. Moiseev P. V. Petrovskii V. N. Kalinin 《Russian Chemical Bulletin》2008,57(8):1773-1774
Carbonate derivatives of 14β-hydroxycodeine, viz., 14β-hydroxy-6-O-(methoxycarbonyl)codeine, 6-O-methoxycarbonyl-14β-(methoxycarbonyloxy)codeine, and 14β-acetoxy-6-O-methoxy-carbonylcodeine, potential substrates for ring C modification in morphinane alkaloids, were synthesized for the first time
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1739–1740, August, 2008. 相似文献
5.
S. Z. Nishanbaev Z. A. Kuliev N. K. Khidyrova A. D. Vdovin N. D. Abdullaev Kh. M. Shakhidoyatov O. A. Aripov 《Chemistry of Natural Compounds》2010,46(3):357-362
Two new oligomeric proanthocyanidin glycosides were isolated from trunk bark of Platanus orientalis. Their structures and relative configurations were found to be 7-O-β-D-Glcp-(–)-epicatechin-(4β-8)-(–)-epicatechin(4β-8)-(–)-epicatechin-3-O-gallate (platanoside-A) and 7-O-β-D-Glc
\textp\xrightarrow6 {\text{p}}\xrightarrow{6} galloyl-(+)-catechin-3-O-gallate(4α-8)-(–)-epicatechin-3-O-gallate-(4β-8)-(–)-epicatechin-3-O-gallate-(4β-8)-5-O-β-D-Glcp-(–)epicatechin-3-O-gallate (platanoside-B). 相似文献
6.
K. K. Uteniyazov Z. Saatov N. D. Abdullaev M. G. Levkovich 《Chemistry of Natural Compounds》1998,34(4):469-473
Four compounds of cycloartane nature have been isolated from the roots ofAstragalus globiceps Bunge. Their structures have been established on the basis of spectral characteristics and chemical transformations. Cyclosieversiosides
E and F and astrasieversianin III have been described previously. Cycloglobiceposide A has now been investigated for the first
time and found to be 20R, 24S-epoxycycloartane-3β, 6α, 16β, 25-tetraol 3-0-(2′-O-acetyl-β-D-xylopyranoside) 6′-O-acetyl-β-D-glucopyranoside).
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (371) 240
64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 509–514, July–August, 1998. 相似文献
7.
M. B. Izbosarov B. Kh. Abduazimov I. M. Yusupova B. Tashkhodzhaev A. D. Vdovin N. D. Abdullaev 《Chemistry of Natural Compounds》1998,34(4):456-461
A sesquiterpene lactone of the germacrane series, mucrochin, has been isolated from the epigeal part ofTanacetopsis mucronata, and its structure has been studied by IR and mass spectral methods and PMR spectroscopy. It structure has been determined
unambiguously by x-ray structural analysis as 5,6-dihydroxy-5α,6β,7α,8β(H)-germacra-1(10),4(15) 1(13)-trien-8,12-olide. A
boat-chair conformation with a configuration of the1D14
15D5 type has been established.
Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 492–498, July–August, 1998. 相似文献
8.
The herbage of the plantAstragalus orbiculatus Lebed. (Leguminosae) has yielded the new cycloartane triterpenoid dihydrocycloorbigenin A, which has the structure of (23R,
24S)-16β, 23; 16α, 24-diepoxycycloartane−3β, 25-diol.
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 40
64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 519–522, July–August, 1998. 相似文献
9.
A. A. Shashkov V. I. Grishkovets O. Ya. Tsvetkov V. Ya. Chirva 《Chemistry of Natural Compounds》1993,29(4):502-508
The previously known glycosides 3-O-α-L-arabinopyranosyl-28-O-[α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl]hederagenin
and 3-O-[α-L-rhamnopyranosyl-(1→2)-O-α-L-arabinopyranosyl]-28-O-[α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl]hederagenin
and the new triterpene glycoside tauroside St-H1 — 3-O-β-D-glucopyransyl-28-O-[α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl]hederagenin — have
been isolated from the stems ofHedera taurica Carr.
M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 571–579, July–August,
1993. 相似文献
10.
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.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 469–471, September–October, 2005. 相似文献
11.
A new triterpene glycoside of the cycloartane series (cycloaraloside C) has been isolated from the roots of the plantAstragalus amarus Pall. (Leguminosae). Cycloaraloside C is a bioside of cyclosieversigenin including one D-glucose residue and one D-apiose
residue. The structure of the glycoside has been shown on the basis of the chemical transformations and spectral characteristics
as 20R,24S-epoxycycloartane-3β,6α,16β,25-tetraol 3-O-[O-(D-apio-β-D-furanosyl)-(1 → 2)-β-D-glucopyranoside]. This is the first
time that D-apiose has been found among cycloartane glycosides.
Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek, Tashkent. Translated from Khimiya Prirodnykh
Soedinenii, No. 6, pp. 783–787, November–December, 1990. 相似文献
12.
R. Zh. Karimov R. U. Umarova Z. Saatov M. G. Levkovich N. D. Abdullaev 《Chemistry of Natural Compounds》1998,34(5):609-612
Two new triterpene glycosides of the cycloartane series, which have been called cyclostipulosides A and B, have been isolated
in the individual form from the roots ofTragacantha stipulosa Boviss. Their structures have been established by physicochemical methods. Cyclostipuloside A is 24R-cycloartane-3β,6α,16β,24,25-pentaol
16-O-β-D-glucopyranoside 3-O-β-D-xylopyranoside, and cyclostipuloside B is 24R-cycloartane-3β,6α,16β,24,25-pentaol 6-O-α-L-arabinopyranoside 16-O-β-D-glucopyranoside 3-O-β-D-xylopyranoside. By the acid hydrolysis of cyclostipulosides A and B we have obtained the new glycoside
24R-cycloartane-3β,6α,16β,24,25-pentaol 16-O-β-D-glucopyranoside.
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (371) 120
64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 670–674, September–October, 1998. 相似文献
13.
K. M. Trudybekov A. Zh. Turmukhambetov S. M. Adekenov Yu. T. Struchkov 《Chemistry of Natural Compounds》1994,30(4):460-463
The new sesquiterpene lactone anolide has been isolated from the epigeal part ofAchillea nobilis. From its spectral characteristics and the results of an x-ray structural investigation, the structure of 3α,4β-dihydroxy-1,5,7α(H),6β(H)-guaia-10(14),11(13)-dien-6,12-olide
is proposed for anolide.
Institute of Organic Synthesis and Coal Chemistry, National Academy of Sciences of the Republic of Kazakhstan, Karaganda.
A. N. Nesmeyanov Institute of Organometallic Compounds, Russian Academy of Sciences, Moscow. Translated from Khimiya Prirodnykh
Soedinenii, No. 4, pp. 500–504, July–August, 1994. 相似文献
14.
A. A. Kicha N. V. Ivanchina A. I. Kalinovskii P. S. Dmitrenok E. V. Sokolova I. G. Agafonova 《Chemistry of Natural Compounds》2007,43(1):76-80
Five sulfated steriodal compounds including one new glycoside called linckoside L7 (1) and four previously known glycosides
2–5 were isolated from the starfish Linckia laevigata. The structure sodium (22E, 24R)-3-O-(2-O-methyl-β-D-xylopyranosyl)-29-O-(β-D-xylopyranosyl)-24-ethylcholest-4,22-dien-3β,6β,8,15α,16β,29-hexaol 15-O-sulfate was proposed for L7. Linckoside L7 inhibited fertilization and egg-cell development in the sea urchin Strongylocentrotus intermedius.
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 64–67, January–February, 2007. 相似文献
15.
Two dimeric proanthocyanidines identified as 2R,3R,4R-(-)-epigallocatechin-(4β→ 8)-2R,3R-(-)-epigallocatechin-3-O-gallate and 2R,3R,4R-(-)-epigallocatechin-(4β→8)-(-)-2R,3R,3,5,7,3′,4′,6′-hexahydroxyflavan were isolated by adsorption chromatography over polyamide of the ethylacetate fraction of
the aqueous alcohol extract of Limonium gmelinii roots. The former proanthocyanidine was isolated for the first time from sea lavender whereas the latter is new.
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Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 134–138, March–April, 2006. 相似文献
16.
Yukiko Enomoto Hiroshi Kamitakahara Toshiyuki Takano Fumiaki Nakatsubo 《Cellulose (London, England)》2006,13(4):437-448
Novel cellobiose and cellulose (DP
n
=ca. 30) derivatives, N-(1-pyrenebutyloyl)-4-O-(β-d-glucopyranosyl)-β-d-glucopyranosylamine (6), N-(15-(1-pyrenebutyloylamino)-pentadecanoyl)-4-O-(β-d-glucopyranosyl)-β-d-glucopyranosylamine (7), N-(1-pyrenebutyloyl)-β-cellulosylamine (13), N-(15-(1-pyrenebutyloylamino)-pentadecanoyl)-β-cellulosylamine (14) carrying a pyrene group as a single fluorescent probe at the reducing end, were prepared in order to investigate their self-assembly systems in solutions. The relative intensity of the excimer emission at ca. 480 nm due to dimerized pyrenes (intensity I
E) to the monomer emission at ca. 380 nm due to isolated pyrene (intensity I
M), i.e., I
E/I
M, was monitored in various solutions. In water/dimethyl sulfoxide (DMSO) mixed solvent (0–98%, v/v), the ratio I
E/I
M remained low (0.04) for compound 6 over the range of water concentrations, indicating that pyrenes at C-1 position of compound 6 were diffused. On the other hand, the ratio I
E/I
M increased (0.04–4.96) for compound 7 with the increase in water concentration, indicating that pyrenes at C-1 position were associated. In aqueous NaOH solutions (4.4–17.5%, w/w), compound 14 showed a large increase in the ratio I
E/I
M (0.84–8.14) with the increase in NaOH concentration, compared to compound 13 (0.06–0.41). It was found that the association of hydrophobic groups at the reducing-end of cellulose could be controlled by the hydrophilic–hydrophobic balance of compounds and the solvent polarity. 相似文献
17.
E. A. Khamidullina A. S. Gromova V. I. Litskii A. L. Vereshchagin A. A. Semenov M. F. Larin 《Chemistry of Natural Compounds》1989,25(4):441-447
Four new cycloartane glycosides have been isolated from a methanolic extract ofThalictrum squarrosum Stephan ex Willd.: squarroside A1 (I) — (21R, 22S, 23R)-3β-(β-D-glucopyranosyloxy)-21α-methoxy-21,23-epoxycycloart-24-ene-22β,30-diol,
C30H60O10; squarroside A2 (II) — the (21S)-epimer of compound (I); squarroside B1 (III) (21R, 22S, 23R)-3gb-[O-α-L-rhamnopyranosyl-(1
→ 6)-β-D-glucopyranosyloxy]-21α-methoxy-21,23-epoxycycloart-24-ene-22β,30-diol, C43H70O14; and squarroside B2 (IV) — the (21S)-epimer of compound (III). The proposed structures were determined on the basis of1H and13C NMR spectroscopy, FAB mass spectrometry, and chemical transformations.
Irkutsk Institute of Organic Chemistry, Siberian Branch, USSR Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii,
No. 4, pp. 516–523, July–August, 1989. 相似文献
18.
D. A. Panov V. I. Grishkovets V. V. Kachala A. S. Shashkov 《Chemistry of Natural Compounds》2006,42(1):49-54
Thirteen known glycosides of hederagenin and oleanolic acid and the three new triterpene glycosides of oleanolic acid-28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranosyl ester 3-O-β-D-glucopyranosyl-(1→4)-O-β-D-xylopyranosyl-(1→ 3)-O-α-L-rhamnopyranosyl-(1→2)-O-α-L-arabinopyranoside of oleanolic acid and the 28-O-α-L-rhamnopyranosyl-(1→4)-O-6-O-acetyl-β-D-glucopyranosyl-(1→ 6)-O-β-D-glucopyranosyl esters 3-O-β-D-xylopyranosyl-(1→3)-O-α-L-rhamnopyranosyl-(1→2)-O-α-L-arabinopyranoside of oleanolic acid and 3-O-β-D-glucopyranosyl-(1→4)-O-β-Dxylopyranosyl-(1→3)-O-α-L-rhamnopyranosyl-(1→ 2)-O-α-L-arabinopyranoside of oleanolic acid were isolated from leaves of Kalopanax septemlobum var. typicum introduced to Crimea.
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Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 40–43, January–February, 2006. 相似文献
19.
I. I. Dovgii V. I. Grishkovets V. V. Kachala A. S. Shashkov 《Chemistry of Natural Compounds》2006,42(2):182-185
Structures of eight triterpene glycosides, of which the 28-O-(2-O-acetyl-and 3-O-acetyl-α-L-rhamnopyranosyl)-(1→4)-O-β-D-glucopyranosyl-(1→ 6)-O-β-D-glucopyranosyl esters of hederagenin 3-O-β-D-glucopyranosyl-(1→ 2)-O-α-L-arabinopyranoside (J1a and J1b) were new, from Cussonia paniculata (Araliaceae) leaves were established using chemical and NMR spectroscopic methods.
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Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 149–152, March–April, 2006. 相似文献
20.
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).
__________
Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 325–330, July–August, 2005. 相似文献