Výsledky vyhledávání - "I A, Vosekalna"

Synthesis and structure of optically active 3-amino-2H-azirines

Autor: I. P. Piskunova, A. F. Mishnev, A. V. Eremeev, I. A. Vosekalna

Publikováno v: Tetrahedron. 49:4671-4676

Synthesis of optically active 3-amino-2H-azirines using the modified Neber reaction has been carried out for the first time. The structure and absolute configuration of diastereomeric derivatives of 3-amino-2H-azirines have been determined.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80bafdcbde42be94b25bdeee3fa9d60b
https://doi.org/10.1016/s0040-4020(01)81296-5

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ChemInform Abstract: Synthesis and Structure of Optically Active 3-Amino-2H-azirines

Autor: A. V. Eremeev, I. A. Vosekalna, A. F. Mishnev, I. P. Piskunova

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc002cd6b27774dfa903acda4ebd0314
https://doi.org/10.1002/chin.199339167

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[The functional role of carbohydrate moiety of sturgeon gonadotropin beta-subunit]

Autor: G A, Zenkevich, V A, Vose, I A, Vosekalna, A Ia, Butsena

Publikováno v: Doklady Akademii nauk. 364(6)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::bd11834ac7063703648df7860d1d451c
https://pubmed.ncbi.nlm.nih.gov/10439905

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[Synthesis of a cyclic enkephalin analog with prolonged action]

Autor: I V, Bobrova, N A, Myshliakova, O S, Papsuevich, I A, Vosekalna, E I, Mekshun

Publikováno v: Bioorganicheskaia khimiia. 21(4)

A cyclic analog of enkephalin, cyclo(Lys-Tyr-DMet-Gly-Phe-Pro-) and two corresponding linear hexapeptides with lysine residue on the N- and C-termini of the pentapeptide sequence, Lys-Tyr-DMet-Gly-Phe-Pro and Tyr-DMet-Gly-Phe-Pro-Lys were synthesized

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::10b96a06a6f2805959f9d0e6c86c75a4
https://pubmed.ncbi.nlm.nih.gov/7786318

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[Synthesis and analysis of cyclic analogs of angiotensin]

Autor: Iu E, Antsans, D A, Bisenietse, I A, Vosekalna, N V, Myshliakova, G I, Chipens

Publikováno v: Bioorganicheskaia khimiia. 16(3)

Five angiotensin cycloanalogues have been synthesised by classical methods of peptide chemistry, cyclisation being carried out via pentafluorophenyl esters. Cycloanalogues (I-IV) with a fixed potential turn in the C-terminal part of the angiotensin m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::1f1cfe8354e1d241f8c55e892d7f4ff2
https://pubmed.ncbi.nlm.nih.gov/2357239

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Absolute configuration of diastereomeric derivatives of N-substituted aziridine-2-carboxylic acids

Autor: I. A. Vosekalna, F. D. Polyak, R. G. Kostyanovskii, Sh. S. Nasibov, I. I. Chervin, A. V. Eremeev

Publikováno v: Chemistry of Heterocyclic Compounds. 20:1102-1107

Individual diastereomers of a number of anilides of N-substituted aziridine-2-carboxylic acids have been obtained. Conclusions regarding the spatial structure of the compounds indicated have been drawn on the basis of the 1H NMR, 15N NMR, and CD spec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bd4e47c7bc5cd4840628ca6ff7ce1a0d
https://doi.org/10.1007/bf00503598

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Chiroptical properties of the nonplanar amide chromophore in n-acylaziridines

Autor: M. A. Shokhen, G. V. Shustov, R. G. Kostyanovskii, Anton V. Eremeev, F. D. Polyak, R. K. Alekperov, I. A. Vosekalna, G. K. Kadorkina

Publikováno v: Chemistry of Heterocyclic Compounds. 25:32-39

The optically active 1-acyl-substituted (1R,2R)-2-methyl- and (1R,2S)-2-methoxycarbonylaziridines were synthesized. The nonplanarity of the amide chromophore in them and its high conformational mobility, which was caused by the rotation around the N-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b70ef85b2241a957804027278449c737
https://doi.org/10.1007/bf00472614

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Synthesis and absolute configurations of diastereomeric aziridine-2-carboxylic acid derivatives containing valine and hexafluorovaline fragments

Autor: I. A. Vosekalna, F. D. Polyak, R. G. Kostyanovskii, É. É. Liepin'sh, A. V. Eremeev, I. V. Solodin, I. I. Chervin

Publikováno v: Chemistry of Heterocyclic Compounds. 21:1110-1113

Individual diastereomers of aziridine-2-carboxylic acid esters that contain R- and S-valine and R- and S-hexafluorovaline fragments were isolated by high-performance liquid chromatogrpahy (HPLC). The absolute configurations of both asymmetric centers

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f125ae2a4f2cb500d5c6fbe17ed715fc
https://doi.org/10.1007/bf00515248

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[Conformation of the enkephalin cycloanalog Lys-Tyr-Gly-Gly-Phe-Leu-]

Autor: Iu Iu, Balodis, B G, Vesterman, I A, Vosekalna, I V, Bobrova, G V, Nikiforovich

Publikováno v: Bioorganicheskaia khimiia. 11(11)

The spatial structure of an enkephaline cycloanalogue Lys-Tyr-Gly-Gly-Phe-Leu--has been investigated by means of energy calculations, fluorescence and CD-spectroscopy. Despite the high conformational mobility of the cycloanalogue, little resemblance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::c469de18edf76c9ed3ce798cb325e4c4
https://pubmed.ncbi.nlm.nih.gov/4091861

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[Synthesis and biological activity of cyclic and linear analogs of C-terminal fragments of neurotensin]

Autor: I V, Grinshteĭne, I P, Misinia, R E, Vegner, I A, Vosekalna, E A, Gaĭlite

Publikováno v: Bioorganicheskaia khimiia. 11(9)

Using solid-phase approach, new cyclic and linear analogues of C-terminal neurotensin (NT) fragments were synthesized and their vasodepressor and miotropic activities were assayed. The cyclic structures were fixed by a peptide bond linking the lysine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::17c4c67ebcc88a40b26566a3e9bf31b7
https://pubmed.ncbi.nlm.nih.gov/4062994

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