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Volumn 46, Issue 41, 2005, Pages 6979-6981

A cyclopropanol approach to the synthesis of the C13-C21 fragment of epothilones from diethyl (S)-malate

Author keywords

(S) Malic acid; Allyl halides; Cyclopropanols; Epothilones

Indexed keywords

BROMINE DERIVATIVE; CARBONYL DERIVATIVE; CYCLOPROPANE; EPOTHILONE DERIVATIVE; ETHYLMAGNESIUM BROMIDE; MALIC ACID DERIVATIVE; PROPANOL; TETRAHYDROPYRAN DERIVATIVE; TITANIUM DERIVATIVE; TITANIUM ISOPROPOXIDE; UNCLASSIFIED DRUG;

EID: 24344495334     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2005.08.075     Document Type: Article
Times cited : (30)

References (42)
  • 9
    • 24344504082 scopus 로고    scopus 로고
    • see doi:10.1016/j.tetlet.2005.08.076.
    • Bekish, A. V.; Kulinkovich, O. G. Tetrahedron Lett. 2005, 46, in this issue, see doi:10.1016/j.tetlet.2005.08.076.
    • (2005) Tetrahedron Lett. , vol.46 , Issue.THIS ISSUE
    • Bekish, A.V.1    Kulinkovich, O.G.2
  • 30
    • 24344470402 scopus 로고    scopus 로고
    • note
    • 2O).
  • 31
    • 24344503955 scopus 로고    scopus 로고
    • note
    • The signals of the protons of the methoxy groups at δ = 3.52 and 3.56 ppm were used to determine the enantiomeric purity.
  • 32
    • 24344441042 scopus 로고    scopus 로고
    • note
    • 2O).
  • 33
    • 24344475025 scopus 로고    scopus 로고
    • note
    • The use of the corresponding organolithium derivative for alkylation of allyl bromide 5 led to a decrease in the yield of compound 6 due to homocoupling of the starting halogenide.
  • 34
    • 24344459669 scopus 로고    scopus 로고
    • note
    • 2S: C, 64.48; H, 7.58. Found: C, 64.71; H, 7.52.
  • 35
    • 24344434142 scopus 로고    scopus 로고
    • note
    • 2S: C, 64.48; H, 7.58. Found: C, 64.63; H, 7.54.
  • 39
    • 24344479392 scopus 로고    scopus 로고
    • note
    • 3S: C, 54.75; H, 6.27. Found: C, 54.92; H, 6.18.
  • 40
    • 24344497653 scopus 로고    scopus 로고
    • note
    • The (E)-configuration of the acyclic carbon-carbon double bond in compound 8 was verified on the basis of NOE experiments. Irradiation of the olefinic proton of this double bond produced a strong enhancement (15%) of the methine proton signal at δ 4.57-4.64 ppm.
  • 41
    • 24344450481 scopus 로고    scopus 로고
    • note
    • The signals of the protons of the methoxy groups at δ = 3.60 and 3.68 ppm were used to determine the enantiomeric purity.
  • 42
    • 24344468899 scopus 로고    scopus 로고
    • note
    • 3): δ 1.43-1.88 (m, 6H), 2.02 (d, J = 1.3 Hz, 1.5H), 2.09 (d, J = 1.3 Hz, 1.5H), 2.51-2.63 (m, 1H), 2.69 (s, 1.5H), 2.70 (s, 1.5H), 2.76-2.90 (m, 1H), 3.38-3.56 (m, 1H), 3.74-3.88 (m, 1H), 4.54-4.65 (m, 1H), 4.74-4.83 (m, 1H), 6.54-6.57 (m, 0.5H), 6.59-6.62 (m, 0.5H), 6.95 (s, 0.5H), 6.96 (s, 0.5H), 9.76-9.79 (m, 0.5H), 9.82-9.85 (m, 0.5H).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.