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Volumn 126, Issue 32, 2004, Pages 10049-10052

Design of an inversion center between two helical segments

Author keywords

[No Author keywords available]

Indexed keywords

AMINES; AMINO ACIDS; CARBOXYLIC ACIDS;

EID: 4043138620     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0481981     Document Type: Article
Times cited : (68)

References (32)
  • 2
    • 13944277208 scopus 로고    scopus 로고
    • β-peptides, γ-peptides and isosteric backbones
    • Nielsen, P. E., Ed.; Wiley-VCH: Weinheim, Germany
    • (b) Guichard, G. β-Peptides, γ-Peptides and Isosteric Backbones. In Pseudo-Peptides in Drug Discovery; Nielsen, P. E., Ed.; Wiley-VCH: Weinheim, Germany, 2004; pp 33-113.
    • (2004) Pseudo-Peptides in Drug Discovery , pp. 33-113
    • Guichard, G.1
  • 26
    • 4043082209 scopus 로고    scopus 로고
    • note
    • The poor quality of this structure is due to weak diffraction intensity and strong disorganization of isobutyl side chains and included solvent molecules, some of which show partial occupancy factors.
  • 29
    • 4043055323 scopus 로고    scopus 로고
    • note
    • In the spectrum of 2, the signals of H4 and H2, at 6.92 and 8.58 ppm, respectively, overlap with other signals belonging to the quinoline protons. However, they can be unambiguously assigned from 2D NMR experiments.
  • 31
    • 4043068051 scopus 로고    scopus 로고
    • note
    • As suggested by a reviewer, one set of signals with diastereotopic patterns could, in principle, be observed when the P-M helix inverts slowly on the NMR time scale, and when a small fraction of P-P and M-M helices are in fast exchange with the P-M helix. The signals of the P-P and M-M enantiomers should then appear at low temperature when inversion of all helices becomes slow. However, low-temperature studies on 2 and 3 showed that this is not the case. For both compounds, only one species prevails in solution.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.