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Volumn 53, Issue 42, 1997, Pages 14369-14380

Improved stereoselective synthesis of both methyl α- and β-glycosides corresponding to the amino sugar component of the E Ring of calicheamicin γ1(I) and esperamicin A1

Author keywords

[No Author keywords available]

Indexed keywords

AMINOSUGAR; CALICHEAMICIN GAMMA1; ESPERAMICIN A1;

EID: 0030852346     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(97)00921-6     Document Type: Article
Times cited : (9)

References (35)
  • 26
    • 0343191329 scopus 로고    scopus 로고
    • The presence of the corresponding regioisomeric C-4 product cannot be completely ruled out. However, accurate examination of the crude reaction product in each case indicated that the regioisomeric C-4 product is not present or is present to an extent not more than 3%
    • The presence of the corresponding regioisomeric C-4 product cannot be completely ruled out. However, accurate examination of the crude reaction product in each case indicated that the regioisomeric C-4 product is not present or is present to an extent not more than 3%.
  • 27
    • 0342756620 scopus 로고    scopus 로고
    • 3a,5 we tend to think that 3α should reasonably be a liquid
    • 3a,5 we tend to think that 3α should reasonably be a liquid.
  • 30
    • 0342756619 scopus 로고    scopus 로고
    • The proton a to the methoxy group (the anomeric Ha proton, Scheme 3) in both the aziridines 8α and 21α shows a signal (dd) with intermediate values of the coupling constants (J=4.7 and 2.4 Hz in 8α and J=5.0 and 2.5 Hz in 21α) indicating an almost 1:1 equilibrium between the two conformers a and b
    • The proton a to the methoxy group (the anomeric Ha proton, Scheme 3) in both the aziridines 8α and 21α shows a signal (dd) with intermediate values of the coupling constants (J=4.7 and 2.4 Hz in 8α and J=5.0 and 2.5 Hz in 21α) indicating an almost 1:1 equilibrium between the two conformers a and b.
  • 34
    • 0342321801 scopus 로고    scopus 로고
    • 5
    • 5
  • 35
    • 0343626287 scopus 로고    scopus 로고
    • 5
    • 5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.