Zobrazeno 1 - 10 of 34 pro vyhledávání: '"M P, Gavars"'
1
O-acylation of ketoximes of the furan and thiophene series in the liquid-solid body system under interphase catalysts conditions
Autor: E. Lukevich, M. Shimanska, Yu. Yu. Popelis, Edgars Abele, M. P. Gavars, A. Gaukman
Publikováno v: Chemistry of Heterocyclic Compounds. 30:762-766
The acrylation of 2-furanyl- and 2-thienylalkylketoximes by acyl chlorides in a two-phase catalytic system (solid K2CO3-C6H6-18-crown-6) at room temperature leads to a selective formation of the corresponding O-acetylketoximes in the form of a mixtur
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4b7dc5602912aa0d79b91cd93d23365
https://doi.org/10.1007/bf01169629
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2
The fast atom bombardment mass spectra of furyl and thienyl silanes and germanes in comparison with their electron impact mass spectra
Autor: S. Grīnberga, M. P. Gavars, A. P. Gaukhman, N. P. Erchak, I. Mažeika, Edmunds Lukevics
Publikováno v: Organic Mass Spectrometry. 28:1309-1312
The interaction of the π electron system of furyl and thienyl substituents with the silicon (or germanium) atom is less significant in fragmentation under fast atom bombardment than under electron impact. Under fast atom bombardment the primary frag
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51678b08313ad7e075c4ca8898d66f28
https://doi.org/10.1002/oms.1210281104
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3
Total synthesis and properties of prostaglandins 35. Synthesis and properties of 4-carbomethoxy-alkylaminomethylene-(+)2-oxabicyclo[3.3.0]-6-octen-3-ones
Autor: M. P. Gavars, Ya. F. Freimanis, K. I. Dikovskaya, T. V. Mazur, I. V. Turovskii
Publikováno v: Chemistry of Heterocyclic Compounds. 29:635-641
Reaction of (+)4-mesyloxymethylene-2-oxabicyclo[3.3.0]-6-octen-3-one with Ω-amino acids of different lengths gave (+)4-carbomethoxyalkylaminomethylene-2-oxabicyclo[3.3.0]-6-octen-3-ones. For the γ-aminobutyric ester, the corresponding aminomethylen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c32d9af47729066aead6764e8970cd7
https://doi.org/10.1007/bf00531538
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8
Total synthesis and properties of prostaglandins 30. Modification of (1S,5R)-2-oxabicyclo[3.3.0]-6-octen-3-one at the ?-carbon atom
Autor: M. P. Gavars, T. V. Mazur, Ya. F. Freimanis, I. V. Turovskii, K. I. Dikovskaya
Publikováno v: Chemistry of Heterocyclic Compounds. 27:1300-1308
Derivatives of α-alkyl-, α-alkylidene-, and α-hydroxymethylene-2-oxabicyclo[3.3.0]-6-octen-3-one were obtained. The possibility of functional substitution of the bicyclic γ-lactones at the α position to the carbonyl group was thereby demonstrate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3ae678fddc65191b11d6128f9e96ee6
https://doi.org/10.1007/bf00515573
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9
Vinylogs of 4-pyridinaldehyde
Autor: L. K. Maslii, M. P. Gavars, M. V. Shimanskaya, Yu. Yu. Popelis, L. Y. Leitis, G. S. Nikol'skaya, D. P. Yansone, R. A. Skolmeistere
Publikováno v: Chemistry of Heterocyclic Compounds. 27:64-66
Condensation of 4-pyridinaldehyde and 3-(4′-pyridyl)acrolein with acetaldehyde in the presence of morpholine acetate has given their vinylogs. These compounds have been shown to exist mainly in the trans-configurations.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09dd1810fdd9e5a6e1c9c0aa5c47fdd7
https://doi.org/10.1007/bf00633220
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10
[Total synthesis and properties of prostaglandins. XXXI. Synthesis of pyranylated and glycosidated omega-hydroxyalkyl ethers of 11- deoxyprostaglandin E1]
Autor: G P, Sokolov, I Ia, Kaula, Ia F, Freĭmanis, I V, Turovskiĭ, M P, Gavars
Publikováno v: Bioorganicheskaia khimiia. 18(3)
Four methods of the synthesis of model glycosides with 11-deoxyprostaglandin E1 and a connecting polymethylene chain as the aglycone are compared. Interaction of potassium salt of prostaglandin PG with omega-iodoalkylglycosides is the most promising
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::728cc9df66ab340efb61bdd53f1d9301
https://pubmed.ncbi.nlm.nih.gov/1524592
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