排序方式: 共有6条查询结果,搜索用时 31 毫秒
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Panov Alexey A. Lakatosh Sergey A. Kubbutat Michael H. G. Dezhenkova Lyubov G. Totzke Frank Schechtel Kristof 《Chemistry of Heterocyclic Compounds》2019,55(11):1050-1059
Chemistry of Heterocyclic Compounds - Several previously unknown derivatives of 3,4-bis(indol-1-yl)maleimide, as well as 3-(2,3-dihydroindol-1-yl)-4-(indol-1-yl)maleimide were synthesized as... 相似文献
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Vera A. Alferova Roman A. Novikov Olga P. Bychkova Eugene A. Rogozhin Maxim V. Shuvalov Igor A. Prokhorenko Vera S. Sadykova Alexander B. Kulko Lyubov G. Dezhenkova Elena A. Stepashkina Mikhail A. Efremov Olga N. Sineva Gulnara Kh. Kudryakova Aleksander S. Peregudov Pavel N. Solyev Yaroslav V. Tkachev Galina B. Fedorova Larisa P. Terekhova Vladimir A. Korshun 《Tetrahedron》2018,74(52):7442-7449
Two new natural compounds, astolides A,B, were isolated from Streptomyces hygroscopicus collected from the alkaline soil obtained from Saratov region, Russia. The structures were elucidated by interpretation of UV spectroscopic, MS, 1D and 2D NMR data. The relative configurations were determined by analysis of NOESY/ROESY spectra and coupling constants. The isolated compounds were evaluated for their inhibitory activity against bacteria, fungi and yeasts and showed pronounced antifungal activity. Both compounds are noticeably cytotoxic, being active against doxorubicin-resistant human leukemia cell line. 相似文献
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A. V. Dezhenkov D. A. Cheshkov I. A. Prokhorov L. G. Dezhenkova V. I. Shvets Yu. G. Kirillova 《Russian Chemical Bulletin》2015,64(5):1100-1106
A method for the synthesis of 6-O-benzyl- and 6-O-benzyl-2-N-benzyloxycarbonyl-protected guanine derivatives starting from 2-amino-6-chloropurin is described. A regioselective alkylation of these N(9)-protected guanine derivatives gave the corresponding α-monomers of chiral peptide nucleic acids, the L-glutamic acid derivatives. It was shown that these compound do not inhibit (in the concentrations <20 µmol L–1) the topoisomerase I activity. 相似文献
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Golubev A. S. Bogomolov V. O. Shidlovskii A. F. Dezhenkova L. G. Peregudov A. S. Shtil A. A. Chkanikov N. D. 《Russian Chemical Bulletin》2010,59(1):209-218
A convenient method for the synthesis of hitherto unknown 3-bromomethyl-2-chloro-4-fluoromethylquinolines has been developed.
Coupling of 3-bromomethyl-2-chloro-4-trifluo-romethylquinoline with 4(3H)-quinazolinone with subsequent intramolecular Heck cyclization leads to 7-trifluoromethylluotonin, an analog of the antitumor
alkaloid luotonin A. 7-Trifluo-romethylluotonin retains the antitumor activity including apoptosis of cultured tumor cells
and inhibiting DNA-topoisomerase I. 相似文献
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E. V. Stepanova A. A. Shtil’ S. N. Lavrenov V. M. Bukhman A. N. Inshakov E. P. Mirchink A. S. Trenin O. A. Galatenko E. B. Isakova V. A. Glazunova L. G. Dezhenkova E. Sh. Solomko E. E. Bykov M. N. Preobrazhenskaya 《Russian Chemical Bulletin》2010,59(12):2259-2267
Tris(1-alkylindol-3-yl)methanes were obtained and oxidized into tris(1-alkylindol-3-yl)methylium salts. The resulting salts are more toxic to cultured tumor cells than to non-tumor ones. The cytotoxicity of tris(1-alkylindol-3-yl)methylium salts depends on the length of the substituent at the N atom of the heterocycle, increasing from an N-unsubstituted derivative toward N-butyl- and N-pentyl derivatives. A further increase in the length of the N-alkyl substituent lowers the cytotoxicity. The cytotoxicity of tris(1-alkylindol-3-yl)methylium salts for tumor cells correlates with their antibacterial and antifungal activity. Tris(1-alkylindol-3-yl)methylium salts produced a cytocide effect on Gram-positive microorganisms and the most active compounds, on Gram-negative microorganisms as well. Similar patterns of the structure—activity relationship of N-alkylated tris(indol-3-yl)methylium derivatives, which was observed for various lines of tumor cells, bacteria, and fungi, suggest the general character of the mechanisms of the death of prokaryotic and eukaryotic cells induced by these compounds. 相似文献
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Vera A. Alferova Maxim V. Shuvalov Roman A. Novikov Alexey S. Trenin Lubov G. Dezhenkova Elena G. Gladkikh Olda A. Lapchinskaya Valeriya V. Kulyaeva Olga P. Bychkova Elena P. Mirchink Pavel N. Solyev Gulnara Kh. Kudryakova Vladimir A. Korshun Anton P. Tyurin 《Tetrahedron letters》2019,60(21):1448-1451
Three natural glycosylated macrolide compounds, known irumamycin 1 and X-14952B 2, as well as new isoirumamycin 3, were isolated from ethyl acetate mycelium extract of Streptomyces sp. INA-Ac-5812. Structures of the compounds were elucidated using 1D and 2D NMR. Isoirumamycin 3 was found to be an isomer of irumamycin with an 18-membered macrolactone ring instead of 20-membered macrolide in irumamycin. A previously unknown stereo configuration of irumamycin epoxide (C23, C24) and hemiketal (C3, C7) fragments was deduced from NMR data (ROESY/NOESY and HSQMBC). Cytotoxic, antifungal and antibacterial activities were studied for all isolated compounds. Comparison of the collected data showed crucial importance of 20-membered macrolactone ring for antimicrobial properties of this antibiotic family. 相似文献
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