Restricted Nitrogen Inversion in N-Methylpolyhalobenz-7-azanorbornadienes. 1H Dynamic NMR Studies and Molecular Conformation Trapping

1995 ◽  
Vol 60 (1) ◽  
pp. 268-271 ◽  
Author(s):  
C. Hackett Bushweller ◽  
Jay H. Brown ◽  
Christine M. DiMeglio ◽  
Gordon W. Gribble ◽  
Jefferson T. Eaton ◽  
...  
Keyword(s):  
Molecular Conformation ◽  
Dynamic Nmr ◽  
Nmr Studies ◽  
Nitrogen Inversion

Restricted Nitrogen Inversion in 9,10- Diazatetracyclo[6.3.0.0.4,110.5,9]undecanes. Dynamic NMR Studies

1998 ◽  
Vol 63 (11) ◽  
pp. 3775-3777 ◽  
Author(s):  
C. Hackett Bushweller ◽  
Jay H. Brown ◽  
Karen S. Harpp ◽  
Bradford H. Hirth ◽  
Timothy C. Barden ◽  
...  
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies ◽  
Nitrogen Inversion

ChemInform Abstract: Dynamic NMR Studies of Phenyl Formate and 2,6-Dimethylphenyl Formate

ChemInform ◽  
1989 ◽  
Vol 20 (46) ◽  
Author(s):  
H. MARK ◽  
T. BAKER ◽  
E. A. NOE
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies

A simple and efficient synthesis and dynamic NMR studies of some new podands of dithiocarbamates formed from bis(naphthyl) derivatives

2011 ◽  
Vol 22 (5) ◽  
pp. 659-668 ◽  
Author(s):  
Abbas Shockravi ◽  
Mahmood Kamali ◽  
Farhad Sorkhei ◽  
Reza Jafari
Keyword(s):  
Dynamic Nmr ◽  
Efficient Synthesis ◽  
Nmr Studies

Static and Dynamic NMR Studies on Cosmetic Emulsions

2002 ◽  
pp. 375-382
Author(s):  
J. Plass ◽  
D. Emeis
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies ◽  
Cosmetic Emulsions

13C Dynamic NMR Studies on Restricted Rotation about C-N Bond in Carbamates of the 9-Azabicyclo[3.3.1]nonane System

Heterocycles ◽  
1985 ◽  
Vol 23 (4) ◽  
pp. 853 ◽  
Author(s):  
Takefumi Momose ◽  
Osamu Muraoka ◽  
Toshie Minematsu ◽  
Junko Tsuruzawa
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies ◽  
Restricted Rotation

Synthesis and dynamic NMR studies of fluxionality in rhenium(I), platinum(II) and platinum(IV) complexes of ‘back-to-back’ 2,2′∶6′,2″-terpyridine ligands

1998 ◽  
pp. 3479-3488 ◽  
Author(s):  
Andrew Gelling ◽  
Matthew D. Olsen ◽  
Keith G. Orrell ◽  
Anthony G. Osborne ◽  
Vladimir Šik
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies ◽  
Terpyridine Ligands

Synthesis, characterisation, stereochemistry and dynamic NMR studies of N-nitroso and N-formyl-t-3-isopropyl-r-2,c-6-bis(4-methoxyphenyl)piperidin-4-ones

2015 ◽  
Vol 1089 ◽  
pp. 86-94 ◽  
Author(s):  
S. Ponnuswamy ◽  
S. Sethuvasan ◽  
K. Thirunavukarasu
Keyword(s):  
Dynamic Nmr ◽  
Nmr Studies

Collagen structure: new tricks from a very old dog

2016 ◽  
Vol 473 (8) ◽  
pp. 1001-1025 ◽  
Author(s):  
Jordi Bella
Keyword(s):  
Molecular Conformation ◽  
Helical Structure ◽  
Molecular Engineering ◽  
Detailed Knowledge ◽  
Collagen Structure ◽  
Nmr Studies ◽  
Conformational Variability ◽  
Collagen Peptides ◽  
Triple Helical Domain ◽  
Model Peptides

The main features of the triple helical structure of collagen were deduced in the mid-1950s from fibre X-ray diffraction of tendons. Yet, the resulting models only could offer an average description of the molecular conformation. A critical advance came about 20 years later with the chemical synthesis of sufficiently long and homogeneous peptides with collagen-like sequences. The availability of these collagen model peptides resulted in a large number of biochemical, crystallographic and NMR studies that have revolutionized our understanding of collagen structure. High-resolution crystal structures from collagen model peptides have provided a wealth of data on collagen conformational variability, interaction with water, collagen stability or the effects of interruptions. Furthermore, a large increase in the number of structures of collagen model peptides in complex with domains from receptors or collagen-binding proteins has shed light on the mechanisms of collagen recognition. In recent years, collagen biochemistry has escaped the boundaries of natural collagen sequences. Detailed knowledge of collagen structure has opened the field for protein engineers who have used chemical biology approaches to produce hyperstable collagens with unnatural residues, rationally designed collagen heterotrimers, self-assembling collagen peptides, etc. This review summarizes our current understanding of the structure of the collagen triple helical domain (COL×3) and gives an overview of some of the new developments in collagen molecular engineering aiming to produce novel collagen-based materials with superior properties.

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