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Volumn , Issue 1, 2000, Pages 75-82

Solution equilibria in YbDOTMA, a chiral analogue of one of the most successful contrast agents for MRI, GdDOTA

Author keywords

Conformational equilibria; EXSY spectroscopy; Lanthanide induced shifts; Macrocyclic ligands; Solution structure

Indexed keywords

ISOMERS; MAGNETIC SUSCEPTIBILITY; NUCLEAR MAGNETIC RESONANCE; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY;

EID: 0033977148     PISSN: 14341948     EISSN: None     Source Type: Journal    
DOI: 10.1002/(sici)1099-0682(200001)2000:1<75::aid-ejic75>3.0.co;2-%23     Document Type: Article
Times cited : (44)

References (35)
  • 1
    • 85153273505 scopus 로고    scopus 로고
    • note
    • 4 = 1,4,7,10-tetraazacyclododecane tetrakis(methylenebenzylphosphinic acid), DO3MA = (1R,4R,7R)-α,α″,α‴-trimethyl-1,4,7,10- tetraazacyclododecane-1,4,7-triacetic acid, Parker's phenylethylamide = 1,4,7,10-tetrakis[(R)-1-(phenyl)ethylcarbamoylmethyl]-1,4,7,10- tetraazacyclododecane, Parker's naphtylethylamide = 1,4,7,10-tetrakis[(R)-1-(1-naphtyl)ethylcarbamoylmethyl]-1,4,7,10- tetraazacyclododecane.
  • 17
  • 18
    • 85153230238 scopus 로고    scopus 로고
    • Corfu, Greece
    • L. Di Bari, G. Pintacuda, P. Salvadori, Book of abstracts, 6th International Conference on Circular Dichroism, Pisa, Italy, 1997; L. Di Bari, G. Pintacuda, P. Salvadori, Book of abstracts, 24h FGIPS Meeting in Inorganic Chemistry, Corfu, Greece, 1997; G. Pintacuda, L. Di Bari, P. Salvadori, Book of abstracts, 23th International Symposium on Macrocyclic Chemistry, Turtle Bay, Hawaii, 1998.
    • (1997) Book of Abstracts, 24h FGIPS Meeting in Inorganic Chemistry
    • Di Bari, L.1    Pintacuda, G.2    Salvadori, P.3
  • 24
    • 85153325816 scopus 로고    scopus 로고
    • note
    • We prefer to borrow the stereochimical descriptors n and p, which clarify the diastereomeric nature of the rearranged forms, and avoid reference to the major form of YbDOTA. Indeed, the structures of the predominant form in solution depend on the nature of the ligand and on the size of the central ion.
  • 25
    • 85153273697 scopus 로고    scopus 로고
    • note
    • All the operations on the structures described can be performed with a standard molecular modelling package, such as Hyperchem (Hypercube Inc.) or CS ChemDraw Pro (CambridgeSoft Corporation).
  • 26
    • 85153316837 scopus 로고    scopus 로고
    • note
    • α bond by 5° about the optimal value does not imply a relevant increase of the factor, R (about 10% higher when the angle is 170°).
  • 27
    • 85153321317 scopus 로고    scopus 로고
    • note
    • [4][15]).
  • 30
    • 0002228715 scopus 로고    scopus 로고
    • For a general reference on the NMR of paramagnetic molecules, see: I. Bertini, C. Luchinat, Coord. Chem. Rev. 1996, 150, 1-296.
    • (1996) Coord. Chem. Rev. , vol.150 , pp. 1-296
    • Bertini, I.1    Luchinat, C.2
  • 33
    • 85153199166 scopus 로고    scopus 로고
    • note
    • The errors on these values were estimated through their dispersion for the various experiments.
  • 34
    • 85153319083 scopus 로고    scopus 로고
    • note
    • 2 and C is not diagnostic, since in both structures Λ(δδδδ) and Λ(λλλλ) the two protons are nearby. Furthermore, it is very difficult to detect, owing to the large relaxation rates of the two nuclei, which sit close to the paramagnetic centre.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.