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Volumn 71, Issue 9, 2006, Pages 3452-3463

4,6-O-[1-cyano-2-(2-iodophenyl)ethylidene] acetals. Improved second-generation acetals for the stereoselective formation of β-D-mannopyranosides and regioselective reductive radical fragmentation to β-D-rhamnopyranosides. Scope and limitations

Author keywords

[No Author keywords available]

Indexed keywords

CAMPHORSULFONIC ACID; STEREOSELECTIVE FORMATION; THIOMANNOSIDE DONORS;

EID: 33646271159     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo0526688     Document Type: Article
Times cited : (56)

References (99)
  • 66
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    • For a review of methods, see: Ziegler, T. Top. Curr. Chem. 1997, 186, 203-229.
    • (1997) Top. Curr. Chem. , vol.186 , pp. 203-229
    • Ziegler, T.1
  • 77
    • 0002151740 scopus 로고
    • For a review of ortho ester formation: De Wolfe, R. H. Synthesis 1974, 153-172.
    • (1974) Synthesis , pp. 153-172
    • De Wolfe, R.H.1
  • 81
    • 33646257491 scopus 로고    scopus 로고
    • Cf. ref 16 and references therein
    • (d) Cf. ref 16 and references therein.
  • 88
    • 0032784876 scopus 로고    scopus 로고
    • Precedent for the formation of similar substances combining two molecules of a glycosyl donor, with migration of a single ester to the anomeric position, can be found in the work of Whitfield and co-workers: Nukada, T.; Berces, A.; Whitfield, D. M. J. Org. Chem. 1999, 64, 9030-9045.
    • (1999) J. Org. Chem. , vol.64 , pp. 9030-9045
    • Nukada, T.1    Berces, A.2    Whitfield, D.M.3
  • 89
    • 33646264752 scopus 로고    scopus 로고
    • note
    • However, it did prove possible to selectively cleave a chloroacetate ester in the presence of the first-generation radical precursor with ethylenediamine, cf. ref 11b.
  • 91
    • 0347762896 scopus 로고    scopus 로고
    • Comparison with the Hanessian-Hullar NBS mediated cleavage reveals significant differences between the two reactions in the galactopyranose series, but this is due to the operation of different mechanisms. The work described here, like that of Roberts, is a pure radical fragmentation, whereas the Hanessian-Hullar reaction is a nucleophilic ring opening by the bromide ion: McNulty, J.; Wilson, J.; Rochon, A. C. J. Org. Chem. 2004, 69, 563-565.
    • (2004) J. Org. Chem. , vol.69 , pp. 563-565
    • McNulty, J.1    Wilson, J.2    Rochon, A.C.3
  • 92
    • 84986720813 scopus 로고
    • Precedent exists in the literature for this type of Lewis acid mediated methyl galactopyranoside to methyl galactofuranoside rearrangement. Ziegler, T.; Eckhardt, E.; Herold, G. Liebigs Ann. Chem. 1992, 441-451.
    • (1992) Liebigs Ann. Chem. , pp. 441-451
    • Ziegler, T.1    Eckhardt, E.2    Herold, G.3
  • 93
    • 33646262843 scopus 로고    scopus 로고
    • note
    • 31


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.