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Volumn 19, Issue 5, 2009, Pages 1318-1322

Synthesis and biological evaluation of cis-locked vinylogous combretastatin-A4 analogues: Derivatives with a cyclopropyl-vinyl or a cyclopropyl-amide bridge

Author keywords

Bioisosteric replacement; Colchicine binding site; Combretastatin A4; Cyclopropane; Tubulin polymerization

Indexed keywords

ANTINEOPLASTIC AGENT; COMBRETASTATIN A4 DERIVATIVE; CYCLOPROPANE DERIVATIVE; LIGAND; TUBULIN; UNCLASSIFIED DRUG;

EID: 60449107894     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.bmcl.2009.01.062     Document Type: Article
Times cited : (29)

References (44)
  • 15
    • 0041421003 scopus 로고    scopus 로고
    • For reviews on CA4 analogues see
    • For reviews on CA4 analogues see. Nam N.-H. Curr. Med. Chem. 10 (2003) 1697
    • (2003) Curr. Med. Chem. , vol.10 , pp. 1697
    • Nam, N.-H.1
  • 24
    • 60449104236 scopus 로고    scopus 로고
    • Cis or trans refer to the cyclopropane ring stereochemistry, E or Z to the olefinic bond configuration. All the synthesized cyclopropyl derivatives are cis or trans racemates
    • Cis or trans refer to the cyclopropane ring stereochemistry, E or Z to the olefinic bond configuration. All the synthesized cyclopropyl derivatives are cis or trans racemates.
  • 28
    • 60449118473 scopus 로고    scopus 로고
    • note
    • 1H NMR values for the aldehyde proton allowed easy attribution of the cis or trans stereochemistry for the cyclopropane ring (δ = 8.66 ppm, J = 6.9 Hz/δ = 9.33 ppm, J = 4.6 Hz, respectively).
  • 30
    • 60449109713 scopus 로고    scopus 로고
    • note
    • 1H NMR chemical shifts analysis. For derivatives 3a and 9a with a cis-cyclopropane unit, the cyclopropyl protons H-a and H-c resonate at lower field than in the trans-compounds (∼0.35 and 0.20 ppm, respectively), while the olefinic proton H-d is shielded (∼0.35 ppm). For atom numbering see Scheme 1.
  • 31
    • 60449118864 scopus 로고    scopus 로고
    • note
    • +) 311.1647, found 311.1643.
  • 35
    • 60449110885 scopus 로고    scopus 로고
    • note
    • ac (9.4 and 9.2) is consistent with a cis-disposition of the substituents on the cyclopropyl ring.
  • 38
    • 60449091658 scopus 로고    scopus 로고
    • note
    • 1H NMR spectra of the cis-cyclopropyl-amide compounds show a downfield shift (approximately 0.30-0.35 ppm) of the H-c protons relative to the same protons of the trans-isomers.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.