Zobrazeno 1 - 10
of 41
pro vyhledávání: '"M. I. Yusupov"'
Publikováno v:
Гинекология, Vol 15, Iss 2, Pp 29-32 (2013)
The emergence of functional disorders of the menstrual cycle is associated with the stress factors impact and is often combined with psycho disorders in women. Approach to the treatment of functional disorders involves not only the correction of horm
Externí odkaz:
https://doaj.org/article/2bcfb4a39bd54bd592c38365e857d4df
Publikováno v:
Chemistry of Natural Compounds. 26:473-474
Publikováno v:
Chemistry of Natural Compounds. 23:553-556
A new sesquiterpene lactone, artenolide — C30H40O8, mp 163–174°C (ethanol) — has been isolated from the epigeal part ofArtemesia absinthium L. On the basis of an analysis of spectral characteristics (IR, mass, and1H and13C NMR spectra) of the
Publikováno v:
Chemistry of Natural Compounds. 22:270-274
An x-ray structural analysis has been made with the aim of reliably determining the spatial structure of the sesquiterpene lactone ajafinin. It has been established that it has the structure and configuration of 1,2-α-epoxy-3α,4β,10β-trihydroxy-5
Publikováno v:
Chemistry of Natural Compounds. 16:568-571
The mass spectra of four guaianolides with epoxy groups of C1–C2 have been studied. A mechanism is proposed for the formation of the main ions. The origin of the secondary fragments has been confirmed by measurements of elementary compositions.
Publikováno v:
Chemistry of Natural Compounds. 18:295-297
The circular dichroism method has been used to study the products of the amination of sesquiterpene lactones containing α-methylene-γ-lactone groupings. Analysis of the results obtained has shown that in all the lactones considered the amination re
Publikováno v:
Chemistry of Natural Compounds. 13:674-676
1. A new lactone, isoridentin, with the composition C15H20O4, has been isolated from the epigeal part ofAchillea biebersteinii. 2. On the basis of chemical and spectral information it has been established that isoridentin has the structure of 1,3-dih
Publikováno v:
Chemistry of Natural Compounds. 20:683-685
The presence of an α-oriented hydroxy group at C8 in a guaianolide promotes the stereospecificity of the amination of an exomethylene bond linked with the γ-lactone grouping. The addition of morphiline and of piperidine to the exomethylene bond of
Publikováno v:
Chemistry of Natural Compounds. 15:693-695
On the basis of the results of a study of the sesquiterpene lactone ajanin fromAjania fastigiate (Winkl.) Poljak. by the methods of IR and PMR spectroscopy and chemical transformations, its structure has been established as 3,4,8α-trihydroxy-5α,6β
Publikováno v:
Chemistry of Natural Compounds. 12:348-349