Zobrazeno 1 - 10
of 20
pro vyhledávání: '"I. V. Terent'eva"'
Publikováno v:
Optics and Spectroscopy. 97:472-476
The possibility of switching an external mirror based on stimulated Brillouin scattering (SBS) with a double feedback loop to a laser cavity is shown experimentally. A significant increase in the output laser power is obtained with conservation of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d337a4473a20a3bb6cc645360c602707
https://doi.org/10.1134/1.1803654
https://doi.org/10.1134/1.1803654
Autor:
I. V. Terent'eva, G. V. Lazur'evskii
Publikováno v:
Chemistry of Natural Compounds. 10:342-349
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bad647026445cc8f69e05614c408605
https://doi.org/10.1007/bf00563891
https://doi.org/10.1007/bf00563891
Publikováno v:
Chemistry of Heterocyclic Compounds. 10:985-988
6-Bromobrevicolline, 6,8-dibromobrevicolline, 6,8-dibromobrevicarine, and tribromo-brevicarine were obtained by direct bromination of brevicolline and brevicarine. 6-Bromo-brevicolline was isolated from the mixture obtained by bromination of brevicar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::668080f2915d4227815c97d43fd5f83c
https://doi.org/10.1007/bf00487126
https://doi.org/10.1007/bf00487126
Publikováno v:
Chemistry of Natural Compounds. 3:208-211
The results of a study of the oxidation of brevicolline has shown that the structural formula of the alkaloid is 1-methyl-4-(N-methyl-2′-pyrrolidyl)-β-carboline. The formula has been confirmed by mass spectroscopy and NMR.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc7f0e51832ee5af121e9cfe1cabda89
https://doi.org/10.1007/bf00564117
https://doi.org/10.1007/bf00564117
Publikováno v:
Chemistry of Heterocyclic Compounds. 6:182-186
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d4b0233d9080f7ea0181b3c4bfff78f
https://doi.org/10.1007/bf00474993
https://doi.org/10.1007/bf00474993
Publikováno v:
Chemistry of Heterocyclic Compounds. 8:898-901
The direct nitration of brevicolline, brevicarine, and methyl-, acetyl-, and hydroxybrevicarine with concentrated nitric acid gave 6- and 8-nitrobrevicolline and 6,8-dinitro derivatives of the enumerated compounds. 6-Nitroharman was obtained by oxida
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f15051b19d56c2424529b2c0e3bccf09
https://doi.org/10.1007/bf00475229
https://doi.org/10.1007/bf00475229
Publikováno v:
Chemistry of Natural Compounds. 5:32-35
1. When DL-[2−14C] tryptophan, sodium [2−14C] pyrotartrate, sodium [14/C]-formate, and universally labeled L-[14C] glutamic acid were introduced through the root system intoCarex brevicollis DC, active brevicolline was obtained.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bd3e60bfed903f82f8c8859fc579552
https://doi.org/10.1007/bf00564918
https://doi.org/10.1007/bf00564918
Publikováno v:
Chemistry of Natural Compounds. 5:330-334
1. The alkylation reaction of brevicarine have been studied in detail. The structural formula I proposed for brevicarine [1-methyl-4-(4-methylaminobutyl)-β-carboline] has been confirmed by NMR and mass spectroscopy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::158d3bf20688e06e058d9f35453a84ff
https://doi.org/10.1007/bf00595071
https://doi.org/10.1007/bf00595071
Autor:
I. V. Terent'eva, A. A. Semeno
Publikováno v:
Chemistry of Heterocyclic Compounds. 1:153-156
A number of α-skatyl-α-substituted acetoacetic esters (ethyl, tert. -butyl, and benzyl) are prepared by treating gramine with sodium derivatives of α-substituted acetoacetic esters. When ethyl α-alkyl-α-skatylacetoacetates are heated with dilute
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2337fbc63819e3a3562a5fe7843729af
https://doi.org/10.1007/bf01046674
https://doi.org/10.1007/bf01046674
Autor:
I. V. Terent'eva, A. N. Lomakin
Publikováno v:
Chemistry of Heterocyclic Compounds. 4:756-758
By the direct nitration of harmane and 1,3-dimethyl-, 1-ethyl-, 1-n-propyl-, and 1-isopropyl-β-carbolines with concentrated nitric acid or a mixture of nitric and acetic acids, 6- and 8-nitro-1-alkyl-β-carbolines have been obtained. A chromatograph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::548009e4414d80860202fab565d410eb
https://doi.org/10.1007/bf00486951
https://doi.org/10.1007/bf00486951