메뉴 건너뛰기




Volumn 71, Issue 25, 2006, Pages 9440-9448

Total synthesis of natural and unnatural lamellarins with saturated and unsaturated D-rings

Author keywords

[No Author keywords available]

Indexed keywords

CHEMICAL MODIFICATION; COLUMN CHROMATOGRAPHY; OXIDATION;

EID: 33845530699     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo061810h     Document Type: Article
Times cited : (94)

References (48)
  • 1
    • 85145868635 scopus 로고    scopus 로고
    • Lamellarins: Isolation, activity and synthesis; Gribble, G. W., Joule, J. A., Eds.; Elsevier: New York, Chapter 1
    • (a) Cironi, P.; Albericio, F.; Álvarez, M. In Lamellarins: Isolation, activity and synthesis in Progress in Heterocyclic Chemistry; Gribble, G. W., Joule, J. A., Eds.; Elsevier: New York, 2004; Vol. 16, Chapter 1.
    • (2004) Progress in Heterocyclic Chemistry , vol.16
    • Cironi, P.1    Albericio, F.2    Álvarez, M.3
  • 42
    • 85145868668 scopus 로고    scopus 로고
    • note
    • Exceptions to this analysis are lamellarins H, S, Z, β, γ, and φ, which contain at least one catechol moiety as a peripheral aromatic group, and lamellarins O, P, Q, and R, which contain the "open structure".
  • 43
    • 85145868723 scopus 로고    scopus 로고
    • note
    • For individual steps, see ref 9c and references cited therein (refs 14-24).
  • 46
    • 84970609784 scopus 로고
    • It has been reported that the triacetates of lamellarin K and L were oxidized to the corresponding triacetates of lamellarin M and N using DDQ in refluxing ethanol. (For experimental details of DDQ oxidation in EtOH, see: Carroll, A. R.; Bowden, B. F.; Coll, J. C. Aust. J. Chem. 1993, 46, 489-501.) However, in our hand, such reaction conditions did not furnish the desired products, as the triacetates of lamellarin K and L were not soluble in ethanol even at elevated temperature.
    • (1993) Aust. J. Chem. , vol.46 , pp. 489-501
    • Carroll, A.R.1    Bowden, B.F.2    Coll, J.C.3
  • 47
    • 85145868629 scopus 로고    scopus 로고
    • note
    • 4NBr was not effective.
  • 48
    • 85145868698 scopus 로고    scopus 로고
    • note
    • Longer reaction times resulted in much lower yields presumably from base-mediated opening of the lactone and possibly subsequent decarboxylation of the pyrrole-2-carboxylate (Scheme 5) upon acidification of the crude mixture.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.