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1.
V. N. Odinokov G. Yu. Ishmuratov I. M. Ladenkova L. P. Botsman T. A. Kargapol'tseva G. A. Tolstikov 《Chemistry of Natural Compounds》1992,27(5):621-623
From cyclohexene and caproaldehyde, using ozonolysis and the Knoevenagel reaction, we have synthesized hexadeca-7Z,11E-dien-l-yl acetate — the sex pheromone ofSitotroga cerealella and a component of the sex pheromone ofPectinophora gossypiella.Institute of Chemistry, Bashkir Scientific Center, Urals Branch, Russian Academy of Sciences, Ufa. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 704–707, September–October, 1991. 相似文献
2.
Summary The leaves ofFraxinus mandschurica Rupr. and the bark ofF. potamophila Herd. have yielded esculetin, fraxinol, and a new coumarin C10H8O5, mp 228–230°C which we have called isofraxetin. On the basis of NMR and UV spectroscopy it has been established that isofraxetin is 5,7-dihydroxy-7-methoxycoumarin.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR. Institute of Chemistry, Academy of Sciences of the Turkmen SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 493–497, July–August, 1973. 相似文献
3.
N. K. Kochetkov A. Ya. Khorlin V. E. Vas'kovskii I. P. Gudkova 《Russian Chemical Bulletin》1965,14(7):1177-1184
Summary The complete structure of araloside C — a triterpenoid saponin from the roots ofAralia manshurica (Rupr. et Mey) — was established.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimisheskaya, No. 7, pp. 1214–1222, July, 1965 相似文献
4.
V. N. Odinokov G. Yu. Ishmuratov I. M. Ladenkova G. A. Tolstikov 《Chemistry of Natural Compounds》1987,22(5):595-597
A new effective route to the synthesis of 7-oxooctanal has been found which is based on the ozonolysis of the tetrahydropyran-2-yl ether of 7-methyloct-7-en-l-ol — the product of the coupling of the readily available methallyl chloride and the Grignard reagent from the corresponding ether of 5-bromopentan-l-ol. From the 7-oxooctanal has been obtained 9-oxodec-2E-enoic acid — a pheromone of the honeybeeApis melliferana.Institute of Chemistry of the Bashkir Branch of the USSR Academy of Sciences, Ufa. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 632–634, September–October, 1986. 相似文献
5.
We have studied the uptake of237Np in marine plants and animals belonging to several phyla, and collected samples from the end of January 1986 to March 1986, in a sampling station situated near the outlet of the irradiated fuel reprocessing plant at La Hague.We determined the237Np by neutron activation analysis. This method is very sensitive, with a limit of detection of 5×10–10 mg, 1.3×10–2 mBq. The method consists of the following steps:Reduction of the neptunium to the tetravalent state by treatment with a mixture of hydrazine sulfate and ferrous iron-chromatographic separations on Dowex 1×10 resin in a nitric medium, then in a hydrochloric medium-neutron irradiation in a nuclear reactor-purification of the neptunium by chromatography on Dowex 1×10 resin in a nitric then hydrochloric medium-measurement of the isotope238Np by gamma ray spectrometry using a Ge(Li) detector. The species were collected at Goury, at the northwest extremity of the Cotentin Peninsula, 5 km from the outlet of the reprocessing plant at La Hague. The levels of237Np were as follows: red algaeCorallina officinalis 64 mBq kg–1 wet weight; andChondrus crispus 18 mBq kg–1 wet weight; the spongeHalichondria panicea 14 mBq kg–1 wet weight; the ascidianDendrodoa grossularia 12 mBq kg–1 wet weight. The bivaive molluscsPatella vulgata andGibbula umbilicalis (the flesh ofP. vulgata andG. umbilicalis: 4 and 7 mBq kg–1 wet weight respectively) also prove to be interesting biological indicatorsThe transfer modes of237Np to the various species as a function of their trophic levels are discussed as well as the distribution among the organs in the species consumed and the radiological impact of human consumption. 相似文献
6.
A. G. Serbin M. I. Borisov V. T. Chernobai I. P. Kovalev V. G. Gordienko 《Chemistry of Natural Compounds》1976,11(2):160-162
Summary It has been established that substance 4, isolated previously fromBidens tripartita, is (R-2)isookanin 7-O--D-glucopyranoside [(R-2)flavanomarein]. The compound isolated is a new one for the genusBidens L.Khar'kov State Pharmaceutical Institute. Khar'kov Scientific-Research Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 144–147, March–April, 1975. 相似文献
7.
S. I. Sviridov B. S. Ermolinskii G. A. Belyakova V. G. Dzhavakhiya 《Chemistry of Natural Compounds》1992,27(5):566-571
Ulocladols A and B — new exometabolites having a mixed sesquiterpenoid-polyketide nature that are structurally close to the host-specific toxins ofAlternaria citri — have been isolated from the deuteromyceteUlocladium chartarum. Both substances inhibit the growth of cotton seeds.All-Union Scientific Research Institute of Phytopathology, Moscow Province, Golitsyno. M. V. Lomonosov Moscow State University. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 642–648, September–October, 1991. 相似文献
8.
S. Muthukumaru Pillai 《Reaction Kinetics and Catalysis Letters》1994,52(1):35-41
The isomerization of 5-vinyl-2-norbornene (1) has been studied in the presence of Co (R1-COCHCOR2)x–Et6–yAl2Cly (x=2, 3; y=2–4) catalytic systems. Co(acac)2–AlEt3 and Co(acac)3–AlEt3 systems isomerize1 to 5-ethylidene-2-norbornene (2), whereas the Co(PhCOCHCOPh)2–AlEt3 system selectively forms 3-vinylnortricyclene (3).2 is always accompanied by formation of ethylidene norbornane (4). A possible mechanism for formation of products is proposed. 相似文献
9.
S. G. Il'in G. V. Malinovskaya M. Yu. Antipin Yu. T. Struchkov 《Chemistry of Natural Compounds》1992,27(5):588-592
The complete spatial structure of 20S,24S-dihydroxydammar-25-en-3-one — a triterpenoid isolated from the leaves of a Far-Eastern species of birch,Betula mandschurica — has been established. Intermolecular cooperative hydrogen bonds that are unusual for a triterpenoid system have been detected in crystals of 20S,24S-dihydroxydammar-25-en-3-one, with the participation of both hydroxy groups in one chain of bonds and an orientation of the associated molecules that is characteristic for a bimolecular layer.Pacific Ocean Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 667–672, September–October, 1991. 相似文献
10.
Summary From the hydrocarbon fractions of the oleoresins ofPicea obovata Ledb andPinus koraensis Sieb. Zucc. a new monocyclic diterpene hydrocarbon — neocembrene — has been isolated, and a structure has been proposed for it.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 694–698, November–December, 1970. 相似文献
11.
Summary From the neutral fraction of an acetone extract of the roots of plants of the genusFerula,F. gummosa Boiss.,F. pseudoreoselinum Rgl. et Schmalh. (K-Pol.) andF. Samarkandica Eug. Kor., we have isolated a coumarin gummosin with the composition C24H30O4, mp 176–177°C, [a]D –54°C. The structure of gummosin corresponds to formula (III).With respect to structure, gummosin is a spatial isomer of farnesiferol A; it differs from the latter by the fact that the secondary OH group in gummosin is axial.Khimiya Prirodynkh Soedinenii, Vol. 2, No. 6, pp. 383–387, 1966 相似文献
12.
Summary A new flavonoid, antoside, which is the 3(7)-glucoside-7(3)-rhamnoside of quercetin has been isolated fromAntitoxicum funebrae.Khimiya Prirodnykh Soedinenii, Vol. 2, No. 5, pp. 319–321, 1966 相似文献
13.
R. I. Evstratova A. I. Ban'kovskii V. I. Sheichenko K. S. Rybalko 《Chemistry of Natural Compounds》1973,7(3):260-261
Summary Structure (I) is proposed for arnifolin — a sesquiterpene lactone fromArnica foliosa Nutt. andArnica montana L.All-Union Scientific-Research Institute for Medicinal Plants. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 270–272, May–June, 1971. 相似文献
14.
V. A. Raldugin A. I. Lisina N. K. Kashtanova V. A. Pentegova 《Chemistry of Natural Compounds》1973,6(5):559-562
Conclusions From the neutral fraction of the oleoresin ofPinus sibirica R. Mayr andP. koraensis Sieb. et Zucc. a new diterpenoid has been isolated which we have called pinusolide, whose structure has been shown to be that of methyl labd-8(20)-1,3-dien-16,15-olid-19-oate.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 541–545, September–October, 1970. 相似文献
15.
Two new guaiane esters — karaferin and karaferinin — have been isolated fromFerula karakalensis, and their structures and stereochemistry have been established. It has been shown that theFerula sesquiterpene alcohols angrendiol, ugamdiol, and karaferol are biogenetically interconnected and are products of a single chain of the biogenesis of terpenoids in plants.Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent; Botanical Garden of Moscow State University. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 227–231, March–April, 1993. 相似文献
16.
A new alkaloid — leuconine — has been isolated from the epigeal parts ofAconitum leucostomum andA. septentrionale, and its structure has been established on the basis of spectral characteristics.Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 538–540, September–October, 1992. 相似文献
17.
V. A. Pentegova N. K. Kashtanova A. I. Rezvukhin E. I. Kolipova 《Chemistry of Natural Compounds》1967,2(4):193-196
Summary It has been established that sibirene (isolated from the oleoresin ofPinus sibirica R. Mayr. has the structure 10-methyl-1-methylene-7-isopropyldecal-8-ene.Khimiya Prirodnykh Soedinenii, Vol. 2, No. 4, pp. 239–244, 1966 相似文献
18.
W. W. Williams L. P. Naidovich B. K. Rostotskii I. A. Gubanov 《Chemistry of Natural Compounds》1967,2(4):207-209
Summary 1. The content of total alkaloids in the hypogeal parts ofAndrachne rotundifolia C. A. Mey. (family Euphorbicease) is 0.2–0.3% and in the epigeal parts 0.06–0.08%.The total alkaloids in both the hypogeal and the epigeal parts ofAndrachne rotundifolia consist of five or six non-phenolic bases.2. Three individual substances have been isolated: andrachnine C11H17NO2, which is a new alkaloid; base (II), giving a perchlorate with mp 139°–140° C; and base (III) with mp 135°–136° C.Khimiya Prirodnykh Soedinenii, Vol. 2, No. 4, pp. 257–260, 1966 相似文献
19.
V. N. Odinokov G. Yu. Ishmuratov R. Ya. Kharisova R. R. Vakhidov L. P. Botsman G. A. Tolstikov 《Chemistry of Natural Compounds》1993,29(2):240-244
A new approach is proposed to the synthesis of 11-oxododeca-3,6-diynoic acid — the acyclic precursor of a macrolide component of pheromones ofOryzaephilus mercator andO. surinamensis — from the readily available tetrahydropyran or allylacetone via the intermediate 5-bromo-2,2-ethylenedioxypentane.Institute of Organic Chemistry, Urals Division, Russian Academy of Sciences, Ufa. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 288–292, March–April, 1993. 相似文献
20.
Conclusions The structure 7-hydroxy-3- (or -4-) -methyl-3,4-dihydrocoumarin has been proposed for the aglycone of a new glycoside-interoside B-isolated fromPatrinia intermedia Roem et Schult.Khimiya Prirodnykh Soedinenii, Vol. 4, No. 4, pp. 213–216, 1968 相似文献