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Volumn 126, Issue 26, 2004, Pages 8232-8236

Benzylidene acetal fragmentation route to 6-deoxy sugars: Direct reductive cleavage in the presence of ether protecting groups, permitting the efficient, highly stereocontrolled synthesis of β-D-rhamnosides from D-mannosyl glycosyl donors

Author keywords

[No Author keywords available]

Indexed keywords

ETHERS; STEREOCHEMISTRY; SUGARS; SYNTHESIS (CHEMICAL);

EID: 3042758507     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja048070j     Document Type: Article
Times cited : (105)

References (98)
  • 19
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    • Bundle has previously developed a synthesis of S-ethyl 2-O-acetyl-3,4-di-O-benzyl-β-D-thiorhamnopyranoside from D-mannose as an α-rhamnosyl donor: Kihlberg, J.; Eichler, E.; Bundle, D. R. Carbohydr. Res. 1991, 211, 59-75.
    • (1991) Carbohydr. Res. , vol.211 , pp. 59-75
    • Kihlberg, J.1    Eichler, E.2    Bundle, D.R.3
  • 21
    • 0001266286 scopus 로고    scopus 로고
    • Khan, S. H., O'Neill, R. A., Eds.; Harwood Academic Publishers: Amsterdam
    • (a) Barresi, F.; Hindsgaul, O. In Modern Methods in Carbohydrate Synthesis; Khan, S. H., O'Neill, R. A., Eds.; Harwood Academic Publishers: Amsterdam, 1996; pp 251-276.
    • (1996) Modern Methods in Carbohydrate Synthesis , pp. 251-276
    • Barresi, F.1    Hindsgaul, O.2
  • 23
    • 84961386144 scopus 로고    scopus 로고
    • Ernst, B., Hart, G. W., Sinay, P., Eds.; Wiley-VCH: Weinheim, Germany
    • (c) Pozsgay, V.; In Carbohydrates in Chemistry and Biology; Ernst, B., Hart, G. W., Sinay, P., Eds.; Wiley-VCH: Weinheim, Germany, 2000; Vol. 1, pp 319-343.
    • (2000) Carbohydrates in Chemistry and Biology , vol.1 , pp. 319-343
    • Pozsgay, V.1
  • 60
    • 0030784962 scopus 로고    scopus 로고
    • The majority of NBS-mediated cleavage of carbohydrate-based benzylidene acetals has been conducted with the residual alcohols either unprotected or protected as esters. Reports occasionally surface on the application of the reaction in the presence of benzyl-type ethers, but yields are generally low and difficult to reproduce: Liotta, L. J.; Dombi, K. L.; Kelley, S. A.; Targontsidis, S.; Morin, A. M. Tetrahedron Lett. 1997, 38, 7833-7834.
    • (1997) Tetrahedron Lett. , vol.38 , pp. 7833-7834
    • Liotta, L.J.1    Dombi, K.L.2    Kelley, S.A.3    Targontsidis, S.4    Morin, A.M.5
  • 67
    • 3042843180 scopus 로고    scopus 로고
    • note
    • There are no published reports of this chemistry in the presence of benzyl ethers. Certainly, in our hands, benzyl ether cleavage is competitive with benylidene acetal fragmentation.
  • 68
    • 0141854070 scopus 로고    scopus 로고
    • For a preliminary communication see: Crich, D.; Yao, Q. Org. Lett. 2003, 5, 2189-2191.
    • (2003) Org. Lett. , vol.5 , pp. 2189-2191
    • Crich, D.1    Yao, Q.2
  • 90
  • 98
    • 3042761916 scopus 로고    scopus 로고
    • note
    • Note that it was necessary to remove the chloroacetate group prior to the radical reaction to prevent competitive reduction of the relatively weak chloroacetate C-Cl bond by the stannane.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.