Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Kulyyasov, A."'
Publikováno v:
Chemistry of Natural Compounds. 50:846-849
Four new dialkylphosphonate derivatives 2–5 were prepared for the first time from the guaiane-type sesquiterpene lactone estafiatin (1), which was isolated from the aerial part of Achillea nobilis. Their structures were elucidated using PMR, 13C NM
Publikováno v:
Pharmaceutical Chemistry Journal. 40:202-205
The spermicidal action of a Saussurea salsa (Pall.) Spreng. (SS) extract has been demonstrated by in vivo and in vitro tests in comparison to the reference preparation (Pharmatex). The SS extract in therapeutic concentrations did not produce signific
Autor:
T. T. Edil'baeva, Makhmut M. Shakirov, K. M. Turdybekov, D. T. Sadyrbekov, S. M. Adekenov, Yu. V. Gatilov, V. A. Raldugin, A. T. Kulyyasov, G. A. Atazhanova
Publikováno v:
Chemistry of Natural Compounds. 42:41-45
The structure of the sesquiterpene ketone buddledin C isolated from Pulicaria prostrata (Gilib.) Aschers., was confirmed by XSA. The stereochemistry of its epoxide, which was formed selectively by treating it with hydrogen peroxide in alkaline soluti
Autor:
A. I. Drab, G. A. Atazhanova, V. A. Raldugin, S. M. Adekenov, T. T. Edil'baeva, K. M. Turdybekov, S. A. Ivasenko, A. T. Kulyyasov
Publikováno v:
Chemistry of Natural Compounds. 42:36-40
2-Chloro-4,5α-epoxy-α-santonin and 2-chloro-α-santonin, the molecular structure of which was confirmed by an XSA, were produced by reacting α-santonin and chlorine in aqueous acetonitrile. It was found that 2-chloro-α-santonin is highly effectiv
Autor:
I. Yu. Bagryanskaya, Yu. V. Gatilov, V. A. Raldugin, R. I. Dzhalmakhanbetova, A. T. Kulyyasov, S. M. Adekenov, Makhmut M. Shakirov
Publikováno v:
Chemistry of Natural Compounds. 41:552-555
Dibromocarbene and bisdichlorocarbene derivatives of the available sesquiterpene lactone arglabin were synthesized for the first time. The structures of the molecules were established by spectra methods and XSA.
Publikováno v:
Chemistry of Natural Compounds. 40:387-390
The intermediate in the reaction of grosshemin and dialkylphorphorous acids was isolated and characterized structurally. It has been found that addition of a dialkylphosphite anion occurs under these reaction conditions first at an exomethylene and t
Autor:
S. A. Ivasenko, R. I. Dzhalmakhanbetova, N. B. Kurmankulov, S. M. Adekenov, A. T. Kulyyasov, B. B. Khasenov
Publikováno v:
Chemistry of Natural Compounds. 40:381-386
New phosphorus-containing derivatives of grosshemin were synthesized in 68-70% yield by reacting this guaianolide with dialkylphosphites. Their structures were established by IR, PMR, 13C NMR, and 31P NMR spectroscopies and two-dimensional 1H-1H NMR
Publikováno v:
Chemistry of Natural Compounds. 40:129-133
A new sesquiterpene lactone 5β(H)-austricin was isolated from white wormwood (Artemisia leucodes Schrenk.). Its structure was established by chemical and spectral methods.
Autor:
A. T. Kulyyasov, V. A. Raldugin, M. M. Shakirov, S. M. Adekenov, O. V. Alebastrov, Yu. V. Gatilov, I. Yu. Bagryanskaya
Publikováno v:
Chemistry of Natural Compounds. 39:362-365
1,10-Dihydro-1α,10α-dinitrogrossmisin was synthesized by bubbling gaseous nitrosyl chloride through a chloroform solution of the guaianolide grossmisin. The molecular structure was determined by X-ray. It was found that the formation of similar din
Autor:
S. M. Adekenov, Yu. V. Gatilov, E. A. Kul'magambetova, A. T. Kulyyasov, K. M. Turdybekov, V. I. Yamovoi, R. N. Pak, D. D. Kusainova
Publikováno v:
Chemistry of Natural Compounds. 38:527-531
Reaction of pinostrobin with hydroxylamine and hydrazine formed the corresponding oxime and hydrazone with retention of the γ-pyrone ring. The structures of the modified pinostrobin derivatives were established using PMR, 13C NMR, mass spectrometry,