Zobrazeno 1 - 10
of 16
pro vyhledávání: '"E A, Sirotenko"'
Publikováno v:
Chemistry of Natural Compounds. 27:62-72
The B/E linked scanning spectra of the M+, (M-15)+, and (M-OR1)+ ions and those of some other series have been investigated. The characteristic nature of the individual intensities of the metastable peaks (the magnitudes A) with the same R1 radicals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f41abaf027896c85fd6d463711a0480
https://doi.org/10.1007/bf00629834
https://doi.org/10.1007/bf00629834
Publikováno v:
Chemistry of Natural Compounds. 23:452-461
An analysis of literature material has shown that the stability of the M+ ions of bases with the hetisine skeleton decreases considerably when an OR group is present at C-1, C-6, or C-9. The directions of fragmentation are not monotypical and depend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31a5284c9aef2cbc0572fe5d6430e7c8
https://doi.org/10.1007/bf00597804
https://doi.org/10.1007/bf00597804
Publikováno v:
Chemistry of Natural Compounds. 25:460-464
For the first time, using a MS 25RF chromato-mass spectrometer with a Carlo Erba 5160 chromatograph and a packed column, the possibility of the partial separation of the mixture of diterpene alkaloids of various types from the roots ofAconitum septen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df3f8e409b3c696c961ac747a6bb7193
https://doi.org/10.1007/bf00597658
https://doi.org/10.1007/bf00597658
Mass-spectrometric method of analyzing mixtures of diterpene bases from plants of the genus Aconitum
Publikováno v:
Chemistry of Natural Compounds. 25:455-458
The qualitative composition of the mixture of diterpene alkaloids from the roots ofAconitum septentrionale from various growth sites has been studied. Twenty-one bases have been detected. The mass-spectrometric method of multipeak monitoring has been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a659e720e2d185349e05c08532eca1d
https://doi.org/10.1007/bf00597656
https://doi.org/10.1007/bf00597656
Publikováno v:
Chemistry of Natural Compounds. 25:450-455
The reactions of 6-dehydroeldelidine and 6-dehydrodelcorine with sodium in liquid ammonia have been studied. Structures have been put forward for the compounds obtained. Features of the fragmentation of these compounds under electron impact are discu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d4e69aea61fb6937620cfc2ba6552f2
https://doi.org/10.1007/bf00597655
https://doi.org/10.1007/bf00597655
Autor:
E. G. Sirotenko, Ya. V. Rashkes
Publikováno v:
Chemistry of Natural Compounds. 23:328-336
The parameters of the MD spectra of the fragmentary ions of 21 lycoctonine alkaloids with 7,8-MDOGs have been investigated. On this basis, the monotypicity of the main fragmentation processes characteristic for the individual groups of compounds have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea7628798077cc34c1516d8d50c033b3
https://doi.org/10.1007/bf00600834
https://doi.org/10.1007/bf00600834
Publikováno v:
Chemistry of Heterocyclic Compounds. 25:389-393
The reaction of chloromethylated dibenzo-18-crown-6 and some monosubstituted derivatives (4′-acetyl-, 4′-propionyl-, and 4′-tert-butyldibenzo-18-crown-6) was studied. Modification of the chloromethyl group resulted in the synthesis of various d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::301574742580c9d4ada1e212b6cee536
https://doi.org/10.1007/bf00480749
https://doi.org/10.1007/bf00480749
Autor:
M. S. Yunusov, E. G. Sirotenko, Ya. V. Rashkes, A. S. Narzullaev, S. S. Sabirov, V. M. Matveev
Publikováno v:
Chemistry of Natural Compounds. 23:321-328
The mass-spectral properties of 21 lycoctonine bases with 1-methyoxy-7,8-methyl-enedioxy groups have been studied and generalized. An influence of a methyl-enedioxy group of the nature of the substituents at C-6 and C-10, and of a Δ10(12) bond on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99b240b5dfe4d9d36bc2ecbbf37524cf
https://doi.org/10.1007/bf00600833
https://doi.org/10.1007/bf00600833
Publikováno v:
Chemistry of Natural Compounds. 25:84-93
Fragmentation under electron impact of eleven C18-diterpene alkaloids with an oxygen function at C-4 has been investigated. The contributions of various modes of forming the (M - CH3)+ ions have been determined. The mechanism of the appearance of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87c6e314269b665d9344178f46eaba91
https://doi.org/10.1007/bf00596709
https://doi.org/10.1007/bf00596709
Publikováno v:
Pediatriia. (1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::096ab95eb502e75ba31ee73c11f22738
https://pubmed.ncbi.nlm.nih.gov/846802
https://pubmed.ncbi.nlm.nih.gov/846802