A One- and Two-Dimensional 1H and 13C N.M.R. Study of Some Fernene Triterpenoids

1989 ◽  
Vol 42 (7) ◽  
pp. 1185 ◽  
Author(s):  
AL Wilkins ◽  
JA Elix ◽  
AG Gonzalez ◽  
C Perez
Keyword(s):  
Two Dimensional ◽  
Methyl Group ◽  
Complete Assignment

A complete assignment of the 1H and 13C n.m.r. signals of the lichen triterpenoid 12α-acetoxyfern-9(11)-en-3 β-ol (lb) has been achieved by using one- and two-dimensional n.m.r. techniques. Evidence in support of one of two recently advanced assignments of the methyl group resonances of fern-9(11)-en-3-β-ol (1a) is presented.

Narcissus Alkaloids, XIII. Complete Assignment of the Nmr Spectra of Papyramine and 6-epi-Papyramine by Two-Dimensional Nmr Spectroscopy

1990 ◽  
Vol 53 (6) ◽  
pp. 1456-1462 ◽  
Author(s):  
Jaume Bastida ◽  
Carles Codina ◽  
Francesc Viladomat ◽  
Mario Rubiralta ◽  
Jean-Charles Quirion ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Nmr Spectra ◽  
Two Dimensional ◽  
Complete Assignment

scholarly journals Modification of yeast ribosomal proteins. Methylation

1978 ◽  
Vol 175 (1) ◽  
pp. 221-225 ◽  
Author(s):  
T Kruiswijk ◽  
A Kunst ◽  
R J Planta ◽  
W H Mager
Keyword(s):  
Ribosomal Protein ◽  
Ribosomal Proteins ◽  
Electrophoretic Analysis ◽  
Polyacrylamide Gel ◽  
Methyl Groups ◽  
Two Dimensional ◽  
Protein Species ◽  
Methyl Group

Two-dimensional polyacrylamide-gel electrophoretic analysis of yeast ribosomal proteins uniformly labelled in vivo with [methyl-3H]methionine and [1-14C]methionine revealed that four ribosomal proteins are methylated, i.e. proteins S31, S32, L15 and L41. Lysine and arginine appear to be the predominant acceptors of the methyl groups. The degree of methylation ranges from 0.09 to 0.20 methyl group per modified ribosomal protein species.

Two-dimensional nuclear magnetic resonance of sesquiterpenes. 4—Application to complete assignment of1H and13C NMR spectra of some aromadendrane derivatives

1991 ◽  
Vol 29 (9) ◽  
pp. 969-971 ◽  
Author(s):  
Robert Faure ◽  
Armand R. P. Ramanoelina ◽  
Olivier Rakotonirainy ◽  
Jean-Pierre Bianchini ◽  
Emile M. Gaydou
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nmr Spectra ◽  
Two Dimensional ◽  
Complete Assignment ◽  
Nuclear Magnetic
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