Zobrazeno 1 - 10
of 18
pro vyhledávání: '"G. Yu. Pek"'
Autor:
G. Yu. Pek, M. V. Solovskii
Publikováno v:
Russian Journal of Applied Chemistry. 75:281-285
The kinetics of acid hydrolysis of phenylpenicillins substituted in the benzene ring were studied at pH 3.0 and temperatures of 20, 25, and 30°C. A Hammett correlation analysis of the reaction was performed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8967d0bd4119062874e9679eb606deb
https://doi.org/10.1023/a:1016172722206
https://doi.org/10.1023/a:1016172722206
Publikováno v:
Chemistry of Natural Compounds. 3:1-4
A new coumarin C24H26O7, which we have calledanomalin has been isolated from the roots ofAngelica anomala Ave-Lall. On the basis of its chemical properties, the results of a study of its saponification products and UV, IR, and NMR spectroscopy it has
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a41b5f4a3cdfad371bd948d5451b59a
https://doi.org/10.1007/bf01171710
https://doi.org/10.1007/bf01171710
Publikováno v:
Chemistry of Natural Compounds. 5:89-93
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ae19842248fd83a437b550d9f027ab5
https://doi.org/10.1007/bf00633285
https://doi.org/10.1007/bf00633285
Autor:
Yu. N. Sheinker, G. P. Syrova, G. K. Nikonov, N. S. Vul'fson, V. I. Zaretskii, Vladimir G. Zaikin, G. Yu. Pek, M. E. Perel'son
Publikováno v:
Chemistry of Natural Compounds. 5:301-304
On the basis of a spectroscopic study of peucenol (peumorisin) and the product of its cyclization, it has been established that peucenol is either 7-hydroxy-6-(2′,4′,4′-trimethylcyclohex-1-enylmethyl)coumarin or 7-hydroxy-6-(2′,5′,5′-trim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3323663dfa5192e7992e251817f69e86
https://doi.org/10.1007/bf00595061
https://doi.org/10.1007/bf00595061
Autor:
N. S. Ovchinnikova, G. Yu. Pek, E. M. Kleiner, V. N. Bochkarev, A. S. Khokhlov, N. S. Vul'fson, L. B. Senyavina, V. F. Bystrov
Publikováno v:
Chemistry of Heterocyclic Compounds. 7:284-289
N4-Acylpenilloic acid lactam structures were assigned to the products of the reaction of penilloic acids with acid anhydrides on the basis of a chemical and physicochemical study.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36fcfa0bf7d614c3c08f0f56f9c5e380
https://doi.org/10.1007/bf00944404
https://doi.org/10.1007/bf00944404
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 17:2096-2103
1. On the basis of the NMR-H1 spectra of methyl esters of benzyl- and phenoxymethylpenicillins, cloxacillin, and methicillin, as well as a number of C(3) derivatives of benzyl- and phenoxymethylpenicillins, the regions of the chemical shifts of the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e6af0832cc17a3b0298593f6a49773a
https://doi.org/10.1007/bf00904022
https://doi.org/10.1007/bf00904022
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 20:1590-1595
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df55e9ccff3e3d2096ced00c973f7ffb
https://doi.org/10.1007/bf00860009
https://doi.org/10.1007/bf00860009
Publikováno v:
Chemistry of Natural Compounds. 5:257-265
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a55f56eb4f39a12d020c92970c86501
https://doi.org/10.1007/bf00683846
https://doi.org/10.1007/bf00683846
Publikováno v:
Chemistry of Natural Compounds. 2:252-255
A new coumarin, pranferol C16H16O5, has been isolated from the roots ofPrangos ferulacea (L.) Lindl.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6ef4bdba92f55862719e7ab8f79ecc6
https://doi.org/10.1007/bf00566984
https://doi.org/10.1007/bf00566984
Publikováno v:
Chemistry of Heterocyclic Compounds. 1:1-4
Furan undergoes a diene-synthesis type of reaction with acrylonitrile to give stereoisomeric 3, 6-endoxotetrahydrobenzonitriles whose configurations are established by PMR spectra. 2-Methylfuran undergoes a similar reaction with acrylonitrile. Some a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e052977b22b0ffc7dabb56d1955bc1f5
https://doi.org/10.1007/bf01168907
https://doi.org/10.1007/bf01168907