Calculation of stability constants of hydrogen-bonded complexes from proton magnetic resonance data. Interactions of phenol with dimethylacetamide and various ketones. Solvent effect

1967 ◽  
Vol 71 (12) ◽  
pp. 3954-3959 ◽  
Author(s):  
Masahiro Nakano ◽  
Naomi I. Nakano ◽  
Takeru Higuchi
1991 ◽  
Vol 69 (7) ◽  
pp. 1156-1160 ◽  
Author(s):  
Tahar Lakhlifi ◽  
Ahmed Sedqui ◽  
Bernard Laude ◽  
Nguyen Dinh An ◽  
Joël Vebrel

Three azomethine ylide precursors including the methyl 3,4-dihydro-6,7-dimethoxyisoquinoline-3carboxylate moiety were synthesized. The 1,3-dipolar species formed from these products react with activated dipolarophilic olefines leading diastereospecifically to derivatives of 4′,5′-dimethoxy-1,2-benzo-4,7-imino-4-methoxycarbonyl-1-cycloheptene. Proton magnetic resonance data allowed the determination of the stereochemistry of the cycloadducts. Key words: cyclic azomethine ylide, azabicyclic compounds, stereochemistry.


1973 ◽  
Vol 51 (15) ◽  
pp. 2571-2577 ◽  
Author(s):  
Donald J. Wood ◽  
Frank E. Hruska ◽  
Richard J. Mynott ◽  
Ramaswamy H. Sarma

Proton magnetic resonance data for uridine and uridine-5′-monophosphate, and the corresponding 6-azauracil analogs, are presented and discussed in terms of their overall three dimensional conformations in aqueous solution. The data reveal a destabilizing influence of the 6-aza base upon the gog and g′–g′ conformation of the ribose phosphate moiety.


1973 ◽  
Vol 18 (3) ◽  
pp. 335-337 ◽  
Author(s):  
Irvine J. Solomon ◽  
Robert K. Momii ◽  
Frank H. Jarke ◽  
Andrew J. Kacmarek ◽  
Jack K. Raney ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document