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1.
N. P. Anoshina É. I. Gol'dfarb O. V. Voskresenskaya P. A. Kirpichnikov É. T. Mukmenev 《Russian Chemical Bulletin》1972,21(6):1339-1343
Conclusions The previously expressed theory that the tricyclic triethyl triphosphite of D-mannitol is 2-ethoxy-4, 5-bis-(2-ethoxy-1, 3, 2-dioxaphospholan-4-yl)-l,3,2-dioxa-4-phospholane was corroborated on the basis of the differential-thermal analysis and31P NMR data.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1390–1395, June, 1972. 相似文献
2.
N. I. Sokolova G. K. Nikonov M. E. Perel'son G. P. Syrova Yu. N. Sheinker 《Chemistry of Natural Compounds》1971,4(5):237-239
Conclusions From the roots ofXanthogalum purpurascens growing in the Transcaucasus, we have isolated a new coumarin, C24H26O7 with mp 111–113°C, []
D
20
–164.2° (c 0.97; ethanol) which we have called xanthalin. On the basis of the NMR spectrum it has been established that xanthalin is 3, 4-diangeloyl-2, 2-dimethyl-3, 4-dihydropyrano-5, 6:6, 7-coumarin.Khimiya Prirodnykh Soedinenii, Vol. 4, No. 5, pp. 280–283, 1968 相似文献
3.
Convenient methods for the synthesis of chiral 2,3-seco-2-deoxynucleosides were developed. An isopropylidene protective group was used to block the 3,5-hydroxy groups in 2,3-seco-uridine. Conversion of the hydroxymethyl group to a methyl group was accomplished by chlorination with a mixture of CCl4 and Ph3P with subsequent reduction with n-Bu3SnH. 2,3-seco-2-Deoxyuridine was obtained after deacetonation. The (S) enantiomer was similarly synthesized starting from 1-(-D-arabinofuranosyl)uracil. 3-O-tert-Butyldimethylsilyl-5-O-(p-monomethoxytrityl)-2,3-seco-2-deoxyuridine, which has optically active centers at C(1) and C(4), was also synthesized.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 822–826, June, 1988.The authors thank Professor M. Ya. Karpeiskii for his constant interest in this research. 相似文献
4.
B. E. Ivanov L. A. Valitova T. G. Bykova N. V. Yakimova 《Russian Chemical Bulletin》1978,27(7):1416-1418
Conclusions The reaction of 2,2-bis(4-hydroxy-3-N,N-diethylaminomethylphenyl)propane with triethyl phosphite gave 2,2-bis(4-ethoxy-3-diethylphosphonomethylphenyl)propane via the intermediate formation of a compound with a pentacovalent phosphorus atom. In the presence of acetic acid the reaction leads to 2,2-bis(4-hydroxy-3-diethylphosphonomethylphenyl)propane.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1621–1624, July, 1978. 相似文献
5.
N. S. Prostakov B. N. Anisimov A. V. Varlamov V. F. Zakharov P. I. Zakharov Chandra Mokhan Dzhkha L. A. Murugova 《Chemistry of Heterocyclic Compounds》1979,15(7):777-780
Stable diazo compounds of the azafluorene series, viz., 9-diazo-4-azafluorenone and 1,3-diphenyl-4-azafluorene, were obtained from 4-azafluorenone and 1,3-diphenyl-4-azafluorene tosylhydrazones. 1,2-Dicarbomethoxyspiro(4-azafluorene-9,3-cyclopropane) was obtained from 4-azafluorenone tosylhydrazone, and 4,5-dicarbomethoxyspiro(4-azafluorene-9,3-pyrazolenine) was obtained from 9-diazo-4-azafluorene. It is assumed that the product in the latter case is obtained as a result of reaction of a carbene, viz., 4-azafluorenylidene carbene, which is formed from 9-diazo-4-fluorene, with dimethyl acetylenedicarboxylate.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 951–953, July, 1979. 相似文献
6.
M. M. Konopleva L. P. Smirnova V. T. Glyzin V. L. Shelyuto 《Chemistry of Natural Compounds》1979,15(3):269-272
A new acylated flavone glycoside has been isolated for the first time from the herb marsh cudweed, and for it the structure of 6-caffeyl-7--D-glucopyranosyloxy-4,5-dihydroxy-3,6dimethoxyflavone has been established. In addition, the aglycone, identified as 4,5,7-trihydroxy-3,6-dimethoxyflavone has been isolated. The identifications were made on the basis of UV, IR, PMR, and mass spectra, the products of alkaline and acid hydrolyses, and the results of elementary analysis, melting points, and specific rotations.Vitebsk Medical Institute. All-Union Scientific-Research Institute of Medicinal Plants, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 311–315, May–June, 1979. 相似文献
7.
M. V. Tekzhenetskaya B. Tashkhodzhaev M. R. Yagudaev B. T. Ibragimov S. Yu. Yunusov 《Chemistry of Natural Compounds》1989,25(1):14-18
The structure of bromovasicol has been established on the basis of the results of x-ray structural analysis as 4-bromo-2-(3-hydroxy-2-oxypyrrolinomethl)aniline. Vasicol was isolated from the plantPeganum harmala in the form of 2-(3-hydroxy-2-oxopyrrolidinomethyl)aniline.Institute of the Chemistry of Plants Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 18–23, January–February, 1989. 相似文献
8.
Z. R. Dzhafarov Z. A. Kuliev A. D. Vdovin A. A. Kuliev V. M. Malikov N. M. Ismailov 《Chemistry of Natural Compounds》1992,28(1):27-31
Chemical transformations and spectral characteristics have enabled us to establish the structure and configurations of three coumarins: (+)-2,2-dimethyl-3-hydroxy-3,4-dihydropyrano(5,6:6,7)coumarin (I); (+)-4-hydroxy-5-(1-hydroxy-1-methylethyl)-4,5-dihydrofuro(2,3:6,7)coumarin (II); and (+)-4-hydroxy-5-(1-glucopyranosyloxy-1-methylethyl)-4,5-dihydrofuro(2,3:6,7)-coumarin (III) isolated from the roots ofSmyrnopsis aucheri Karjag. This is the first time that these compounds, which have been called smyrinol, smyrindiol, and smyrindioloside, have been detected in nature.Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Azerbaidzhan State University, Baku. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 36–40, January–February, 1992. 相似文献
9.
A. Yu. Kushmuradov A. Sh. Kadyrov A. I. Saidkhodzhaev V. M. Malikov 《Chemistry of Natural Compounds》1978,14(6):617-619
Summary The roots ofFerula akitschkensis have yielded two new esters — akiferidin and akiferidinin — for which the structures of 6-0-(3,4-dihydroxybenzoyl)ferutinoI and 2-0-angeloyl6-0-(3,4-dihydroxybenzoyl)akichenol, respectively, have been proposed.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 725–727, November-December, 1978. Original article submitted June 30, 1978. 相似文献
10.
A. A. Ponomarev I. A. Markushina L. V. Popova 《Chemistry of Heterocyclic Compounds》1967,3(3):325-329
Research on synthesis of polycyclic spirans of the 1, 6-dioxaspiro-[4, 4]nonane group is continued. Electrolysis of methanol solutions of 2-furylcyclopentanol, 2-(5-methyl-furfuryl)cyclopentanol, and 2-furfuryl-1-indanol, gives, by intramolecular alkoxylation, spiro{perhydrocyclopenta[b]furan-2, 2-(5dihydrofuran)}, spiro{perhydrocyclopenta[b]furan-2, 2-(5-methoxy-5-methyl-2, 5-dihydrofuran)}, and spiro{2, 3, 3a, 8b-tetrahydro-4H-indeno[1, 2-b]furan-2, 2-(5-methoxy-2, 5-dihydrofuran)}, hitherto undescribed in the literature. Depending on the conditions, catalytic hydrogenation of these gives: spiro{perhydiocyclopenta[b]furan-2, 2-(5-methoxytetrahydrofuran)}, spiro{2, 3a, 8b-tetrahydro-4H-indeno[1, 2-b]furan-2, 2-(5-methoxytetrahydrofuran)}, spiro{perhydrocyclopenta[b]furan-2, 2-tetrahydrofuran}, and spiro{2, 3, 3a, 8b-tetrahydro-4H-indeno[1, 2-b]furan-2, 2-tetrahydrofuran}.For Part XXXI see [1]. 相似文献
11.
M. D. Alaniya 《Chemistry of Natural Compounds》1978,13(5):536-539
Summary 1. In a study of the kinetics of the alkaline hydrolysis of flavone glycosides it has been found that derivatives of 3,3,4,5,7-pentahydroxyflavone hydrolyze faster than derivatives of 3,4,5,7-tetrahydroxyflavone and of 3,4,5,7-tetrahydroxy-3-methoxyflavone.2. In the hydrolysis of diglycosides of 3,3,4,5,7-pentahydroxyflavones the maximum amount of intermediate product is formed after 2 min (3,4,5,7-tetrahydroxyflavone glycoside), and in the case of 3,4,5,7-tetrahydroxy-3-methoxyflavone glycosides after 120–150 min.I. V. Kutateladze Institute of Pharmacochemistry, Academy of Sciences of the Georgian SSR, Tbilisi. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 646–649, September–October, 1977. 相似文献
12.
M. E. Perel'son V. V. Bandyshev Yu. E. Sklyar K. Vezhkhovska-Renke N. V. Veselovskaya M. G. Pimenov 《Chemistry of Natural Compounds》1977,12(5):533-537
Summary Two new terpenoid coumarins — tadzhiferin (I) and tadzhikorin (II) — have been isolated from the fruit ofFerula tadshikorum M. Pimen.On the basis of physicochemical and spectral investigations, the structure of 7-(9-hydroxy-3,7,11-trimethyldodeca-2,6,10-trienyloxy)coumarin is proposed for (I) and that of 7-(4-acetoxy-9-hydroxy-3,7,11-trimethyldodeca-2,6,10-trienyloxy)coumarin for (II).All-Union Scientific-Research Institute of Medicinal Plants, Moscow. M. V. Lomonosov State University. Botanical Garden, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 593–599, September–October, 1976. 相似文献
13.
2,2,4-Trichloro-6-phenyl-4,5-dipyrimidinyl, for which nucleophilic substitution with piperdine under various conditions was studied, was obtained from 2,2,4-trioxo-6-phenyl-1, 1,2,2,3,4-hexahydro-4,5-dipyrimidinyl. It is shown that there is an appreciable difference in the rates of substitution of the first, second, and third chlorine atoms, and this made it possible to obtain reaction products that contain one, two, and three piperidino groups. The chlorine atom in the 4 position is replaced initially, after which the chlorine atom in the 2 position undergoes substitution. The structures of the compounds were proved by chemical transformations and analysis of the PMR spectra.See [1] for communication 69.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 821–826, June, 1979. 相似文献
14.
Yu. N. Bannikova A. N. Maslivets Z. G. Aliev 《Russian Journal of Organic Chemistry》2004,40(12):1791-1797
Methyl 1-aryl-3-aroyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates react with N-substituted 3-amino-5,5-dimethyl-2-cyclohexenones to give 4-hydroxy-1-aryl-3-aroyl-6,6-dimethyl-1, 2,3,4,5,5,6,7-octahydro-1H,2H-indole-3-spiro-2-pyrrole-2,4,5-triones. The structure of the products was proved by the X-ray diffraction data for the 1-cyclohexyl derivative.__________Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 12, 2004, pp. 1840–1845.Original Russian Text Copyright © 2004 by Bannikova, Maslivets, Aliev.For communication XLVIII, see [1]. 相似文献
15.
V. A. Keppen V. N. Andronov M. A. Andreeva V. M. Karysheva D. S. Zhuk 《Russian Chemical Bulletin》1973,22(12):2655-2658
Conclusions The reaction of primary amines with succinonitrile leads to the formation of N,N,N,N-tetrasubstituted amidines and the liberation of 2 M of NH3. The reaction of secondary amines with succinonitrile proceeds as an intramolecular condensation with the liberation of 1 M of NH3 per mole of the dinitrile and the formation of the 2,5–, -dialkylaminopyrrolene.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 12, pp. 2722–2725, December, 1973. 相似文献
16.
A mechanism for the electroreduction of 9,9-dinitro-9,9,10,10tetrahydro-10,10-bianthryl in DMF, which results in the formation of anthracene and 9-nitroanthracene has been proposed on the basis of data from polarography, cyclic voltammetry, and electrolysis at a controlled potential.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1321–1325, June, 1991. 相似文献
17.
The diacetylenic adducts, Fe2(CO)6{-EC(H) = C(C CMe)E} (E = E, E E; E, E = S, Se, Te) (1–8) have been obtained from the room temperature stirring of Fe2(CO)6(-EE) with HC CC CMe in methanol solvent containing sodium acetate. Compounds 1–8 have been characterized by IR and multinuclear NMR (1H, 13C, 77Se, and l25Te) spectroscopy. Trends in the chemical shifts of 77Se and 125Te NMR spectra of Fe2(CO)6{-EC(H) = C(C CMe)E} with a variation of EE are discussed. 相似文献
18.
Summary 1. The synthesis of L-(+)--oleoyl--linoleoyl--glycerylphosphorylethanolamine has been effected.2. During the investigations the following substances were isolated and characterized: L--oleoyl--glycerylphosphoryl-N-phthaloylethanolamine and L---linoleoyl--glycerylphosphoryl-N-phthanoylethanolamine.Khimiya Prirodnykh Soedinenii, Vol. 2, No. 2, pp. 80–83, 1966 相似文献
19.
L. T. Eremenko L. O. Atovmyan N. I. Golovina G. V. Oreshko M. A. Fadeev 《Russian Chemical Bulletin》1987,36(9):1870-1872
Conclusions The product of conversion of O-bis(2-fluoro-2,2-dinitroethyl)nitromethylbis(2-fluoro-2,2-dinitroethyl)carboxime in methanol or ether is O-bis(2-fluoro-2,2-dinitroethyl)nitromethyl-2-fluoro-2,2-dinitroethyl-2'-fluoro-2-nitroethylenecarboxinie, the structure of which has been established by x-ray diffraction analysis.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2019–2021, September, 1987. 相似文献
20.
L. I. Strigina Ya. V. Rashkes V. A. Denisenko Yu. M. Mil'grom 《Chemistry of Natural Compounds》1990,26(2):161-165
A new direction of the reaction of pennogenin diacetate with BF3·Et2O has been discovered in which a previously unknown dimeric steroid is formed — (25R,22R,25R)-3,3-diacetoxy-26,22-epoxy-16,16-bifurosta-5,20(22), 5,17(20)-tetraen-26-ol, the structure of which has been established as the result of an analysis of IR, UV,1H and13C NMR, and mass spectra. A probable mechanism for the formation of the title compound from pennogenin diacetate is suggested.Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Branch, USSR Academy of Sciences, Vladivostok. Institute of Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 202–208, March–April, 1990. 相似文献