Restricted Rotation in Aryl Amines. XIV. Isopropyl Derivatives of Dibenzenesulfonamidomesitylene

1950 ◽  
Vol 72 (11) ◽  
pp. 5077-5079
Author(s):  
Roger Adams ◽  
Nils K. Nelson
Keyword(s):  
Restricted Rotation ◽  
Aryl Amines ◽  
Derivatives Of

scholarly journals Derivatives of aryl amines containing the cytotoxic 1,4-dioxo-2-butenyl pharmacophore

2010 ◽  
Vol 20 (5) ◽  
pp. 1510-1515 ◽  
Author(s):  
Amitabh Jha ◽  
Chandrani Mukherjee ◽  
Ashok K. Prasad ◽  
Virinder S. Parmar ◽  
Manjula Vadaparti ◽  
...  
Keyword(s):  
Aryl Amines ◽  
Derivatives Of

The proton magnetic resonance spectra of N-nitroso derivatives of sarcosine, proline and iminodiacetic acid

1971 ◽  
Vol 24 (9) ◽  
pp. 1949 ◽  
Author(s):  
FHC Stewart
Keyword(s):  
Magnetic Resonance ◽  
Long Range ◽  
Proton Magnetic Resonance ◽  
Iminodiacetic Acid ◽  
Conformational Isomerism ◽  
Nitroso Group ◽  
Restricted Rotation ◽  
Derivatives Of ◽  
Shielding Effects ◽  
Magnetic Resonance Spectra

The proton magnetic resonance spectra of various N-nitroso derivatives of sarcosine, L-proline, and iminodiacetic acid, including some protected dipeptides, have been obtained. Magnetic non-equivalence and conformational isomerism arising from restricted rotation of the nitroso group are discussed in relation to the reported behaviour of other nitrosamines. Long-range shielding effects on protons at a considerable distance from the anisotropic nitrosamino centre were readily detected with these compounds.

Restricted Rotation in Aryl Amines. IX. Diaminodurene Derivatives

1950 ◽  
Vol 72 (1) ◽  
pp. 132-135 ◽  
Author(s):  
Roger Adams ◽  
Nils K. Nelson
Keyword(s):  
Restricted Rotation ◽  
Aryl Amines

Purine Nucleoside Analogues. 11. An Alternative Synthesis of N- and O-Alkyl Derivatives of 9- and 7-[(2-Acetoxyethoxy)methyl]-N2-acetylguanine

1999 ◽  
Vol 64 (4) ◽  
pp. 685-695 ◽  
Author(s):  
Marina Madre ◽  
Natella Panchenko ◽  
Alexander Golbraikh ◽  
Regina Zhuk ◽  
Upendra K. Pandit ◽  
...  
Keyword(s):  
Nmr Spectra ◽  
Room Temperature ◽  
Purine Nucleoside ◽  
Nucleoside Analogues ◽  
Alternative Synthesis ◽  
Restricted Rotation ◽  
H Nmr ◽  
Alkyl Derivatives ◽  
Derivatives Of ◽  
Conformational Calculations

Alkylations of 9- and 7-[(2-acetoxyethoxy)methyl]-N2-acetylguanine with alkyl halogenides in the presence of base have been investigated affording a new route to the preparation of 1,N2-dimethyl- as well as O6-benzyl-9(7)-alkoxyalkylguanines. 1H NMR spectra revealed that the 1,N2-dimethyl derivatives exist as mixtures of two conformers at room temperature due to the restricted rotation about the C2-N2 bond. These findings agreed with conformational calculations.

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