Zobrazeno 1 - 4
of 4
pro vyhledávání: '"G. V. Fridlyanskii"'
Publikováno v:
Chemistry of Natural Compounds. 26:412-420
Characteristic distinguishing features of the mass spectra of steroid sapogenins of the spirostan series and their dihydroderivatives are considered. The MD and B/E = const spectra of all the key ions have been studied. It has been established that t
Publikováno v:
Chemistry of Natural Compounds. 21:492-502
The mass spectra of 53 alkaloids and their derivatives are considered. It is known that the presence of a C6(OCH3)-C7(OH)-C8 (OH) grouping in C19-diterpene alkaloids leads to a high intensity of the (M - 15)+ ions at the expense of the C6(OCH3) group
Autor:
V. A. Nikolaev, V. M. Kondrat'ev, A. L. Zhuze, I. A. Bogdanova, O. S. Reshetova, G. V. Fridlyanskii, B. V. Rozynov, V. G. Merimson
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 37:1142-1148
1. Mass spectra of five cysteine-containing peptides and their mixtures were obtained by mass spectrometry methods under the conditions of electron impact, chemical ionization, field desorption bombardment by accelerated electrons and extraction of i
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 21:1748-1752
1. A study of the mass spectra of the completely substituted 1,3-dioxolanes disclosed that the principal directions of the decomposition of their molecular ions are associated with a rupture of the bonds of the dioxolane ring. The substituents are mo