Epimer 20?-, 20?-hydroxy derivatives of pregnane of the 5?,14? series, substituted on the D ring:13C NMR spectra and theoretical conformational analysis by the molecular mechanics method

1989 ◽  
Vol 38 (10) ◽  
pp. 2053-2061
Author(s):  
E. G. Cherepanova ◽  
V. S. Bogdanov
Keyword(s):  
Conformational Analysis ◽  
Molecular Mechanics ◽  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
Theoretical Conformational Analysis ◽  
Molecular Mechanics Method ◽  
Derivatives Of

Syntheses, geometry optimization, and electronic structure of N-and C-substituted benzonaphthyridines

2006 ◽  
Vol 60 (1) ◽  
Author(s):  
M. Deska ◽  
W. Śliwa
Keyword(s):  
Electronic Structure ◽  
Ab Initio ◽  
13C Nmr ◽  
Effective Charge ◽  
Nmr Spectra ◽  
Geometry Optimization ◽  
13C Nmr Spectra ◽  
Derivatives Of ◽  
Hydroxyethyl Group

AbstractSynthesis of N-and C-substituted derivatives of benzo[h][1,6]naphthyridine, bearing 2-hydroxyethyl group has been made by quaternization reaction and by condensation of corresponding methylbenzonaphthyridines with formaldehyde. For six derivatives of isomeric benzo[c][1,5]-, benzo[h][1,6]-, and benzo[f][1,7]naphthyridines the 13C NMR spectra are discussed.For ten compounds the geometry was optimized with the AM1 and, in one case also with the ab initio 6–31G method; their effective charge values have also been calculated.

13C NMR spectra of certain derivatives of ortho-, meta-, and para-carboranes

1976 ◽  
Vol 16 (4) ◽  
pp. 629-630
Author(s):  
V. I. Stanko ◽  
T. A. Babushkina
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
Derivatives Of

Synthesis and 13C NMR spectra of 2,3-di-O-glycosyl derivatives of methyl α-l-rhamnopyranoside and methyl α-d-mannopyranoside

1992 ◽  
Vol 237 ◽  
pp. 95-113 ◽  
Author(s):  
Nikolay E. Nifant'ev ◽  
Alexander S. Shashkov ◽  
Grigory M. Lipkind ◽  
Nikolay K. Kochetkov
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
Derivatives Of

ChemInform Abstract: 13C-NMR Spectra, Isomerism, and Conformational Analysis of Substituted Piperidin-4-ones.

ChemInform ◽  
1987 ◽  
Vol 18 (22) ◽  
Author(s):  
I. F. LESHCHEVA ◽  
N. M. SERGEEV ◽  
G. V. GRISHINA ◽  
V. M. POTAPOV
Keyword(s):  
Conformational Analysis ◽  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra

13C NMR spectra and structure of monoazo derivatives of chromotropic acid

1983 ◽  
Vol 32 (2) ◽  
pp. 290-293
Author(s):  
L. A. Fedorov ◽  
T. G. Akimova ◽  
E. M. Syanava ◽  
A. N. Ermakov
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Chromotropic Acid ◽  
13C Nmr Spectra ◽  
Derivatives Of
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