Empirical quantitative correlation of substituent size with proton nuclear magnetic resonance chemical shift difference between nonequivalent geminal methylene protons of hindered N-substituted acetanilides and difluorooxyboranes

1981 ◽  
Vol 46 (8) ◽  
pp. 1643-1646 ◽  
Author(s):  
Benjamin Staskun
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Proton Nuclear Magnetic Resonance ◽  
Chemical Shift Difference ◽  
Quantitative Correlation ◽  
Nuclear Magnetic

An improved route to pregna-5,20-dien-3β-ol (muricin aglycone): Carbon and proton nuclear magnetic resonance assignments for the aglycone and a number of related pregnene derivatives

1987 ◽  
Vol 65 (3) ◽  
pp. 666-669 ◽  
Author(s):  
R. D. Dawe ◽  
J. L. C. Wright
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Resonance Assignments ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Heteronuclear Chemical Shift ◽  
Nuclear Magnetic

Carbon and proton assignments for muricin aglycone (5) and a number of related pregnenes, carried out with the aid of two-dimensional homo- and heteronuclear chemical shift correlation experiments, have resulted in previously reported carbon assignments for the aglycone being revised. An improved route to muricin aglycone is also reported.

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