13C NMR spectra of biologically active compounds. VIII. Stereochemistry of a triterpeneglycoside — Glycyrrhizic acid — And its derivatives

1989 ◽  
Vol 25 (4) ◽  
pp. 426-430 ◽  
Author(s):  
L. M. Khalilov ◽  
L. A. Baltina ◽  
L. V. Spirikhin ◽  
E. V. Vasil'eva ◽  
R. M. Kondratenko ◽  
...  
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Glycyrrhizic Acid ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

13C NMR spectra of biologically active compounds.

1989 ◽  
Vol 25 (2) ◽  
pp. 231-236 ◽  
Author(s):  
L. M. Khalilov ◽  
A. A. Fatykhov ◽  
V. S. Sultanova ◽  
F. Z. Makaev ◽  
F. Z. Galin ◽  
...  
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

13C NMR spectra of biologically active compounds

1991 ◽  
Vol 27 (1) ◽  
pp. 108-113
Author(s):  
L. M. Khalilov ◽  
M. �. Adler ◽  
O. V. Shitikova ◽  
M. S. Miftakhov ◽  
G. A. Tolstikov
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

13C NMR spectra of biologically active compounds. II. 11-Deoxy-16- and 17-aryloxyprostaglandins

1985 ◽  
Vol 21 (5) ◽  
pp. 570-578
Author(s):  
G. A. Tolstikov ◽  
L. M. Khalilov ◽  
A. A. Panasenko ◽  
M. A. Danilova ◽  
M. S. Miftakov
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

13C NMR spectra of biologically active compounds XI. Diastereomeric effects in C-glycosides

1991 ◽  
Vol 27 (3) ◽  
pp. 318-322 ◽  
Author(s):  
L. M. Khalilov ◽  
A. Yu. Spivak ◽  
E. V. Vasil'eva ◽  
A. A. Fatykhov ◽  
N. A. Prokhorova ◽  
...  
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

13C NMR spectra of biologically active compounds. I. ?-Homologs of 11-deoxyprostaglandin E1

1985 ◽  
Vol 21 (3) ◽  
pp. 293-297
Author(s):  
G. A. Tolstikov ◽  
L. M. Khalilov ◽  
A. A. Panasenko ◽  
F. A. Valeev ◽  
M. S. Niftakhov
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
13C Nmr Spectra ◽  
Active Compounds

scholarly journals Study of the biologically active acyclic ureas by nuclear magnetic resonance

2020 ◽  
Vol 100 (4) ◽  
pp. 60-74
Author(s):  
А.А. Bakibaev ◽  
◽  
М.Zh. Sadvakassova ◽  
V.S. Malkov ◽  
R.Sh. Еrkasov ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Functional Groups ◽  
13C Nmr ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Biologically Active ◽  
Resonance Spectroscopy ◽  
13C Nmr Spectra ◽  
Nuclear Magnetic

A wide variety of acyclic ureas comprising alkyl, arylalkyl, acyl, and aryl functional groups are investigated by nuclear magnetic resonance spectroscopy. In general, spectral characteristics of more than 130 substances based on acyclic ureas dissolved in deuterated dimethyl sulfoxide at room temperature are studied. The re-sults obtained based on the studies of 1H and 13C NMR spectra of urea and its N-alkyl-, N-arylalkyl-, N-aryl- and 1,3-diaryl derivatives are presented, and the effect of these functional groups on the chemical shifts in carbonyl and amide moieties in acyclic urea derivatives is discussed. An introduction of any type of substitu-ent (electron-withdrawing or electron-donating) into urea molecule is stated to result in a strong upfield shift in 13C NMR spectra relatively to unsubstituted urea. A strong sensitivity of NH protons to the presence of acyl and aryl groups in nuclear magnetic resonance spectra is pointed out. In some cases, qualitative depend-encies between the chemical shifts in the NMR spectra and the structure of the studied acyclic ureas are re-vealed. A summary of the results on chemical shifts in the NMR spectra of the investigated substances allows determining the ranges of chemical shift variations of the key protons and carbon atoms in acyclic ureas. The literature describing the synthesis procedures are provided. The results obtained significantly expand the methods of reliable identification of biologically active acyclic ureas and their metabolites that makes it promising to use NMR spectroscopy both in biochemistry and in clinical practice.

1H and13C NMR spectra of biologically active compounds. IV. Diastereomers of pyrethroids and their insecticidal activity

1988 ◽  
Vol 24 (2) ◽  
pp. 246-250 ◽  
Author(s):  
G. A. Tolstikov ◽  
L. M. Khalilov ◽  
F. Z. Galin ◽  
E. V. Vasil'eva ◽  
D. B. Amirkhanov ◽  
...  
Keyword(s):  
Insecticidal Activity ◽  
Nmr Spectra ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
1H And13c Nmr Spectra ◽  
1H And13c Nmr ◽  
Active Compounds
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