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Volumn , Issue 5, 2007, Pages 785-789

Synthetic approach to exo-glycals from 1-C-Vinyl-D-glycopyranose derivatives via an SN1′-substitution mechanism

Author keywords

1 C vinyl glycopyranose; exo glycal; SN1 type substitution; Trimethylsilyl trifluoromethanesulfonate

Indexed keywords

1 C VINYL DEXTRO GLYCOPYRANOSE DERIVATIVE; ACETONITRILE; DICHLOROMETHANE; ETHER DERIVATIVE; PYRAN DERIVATIVE; TRIFLUOROMETHANESULFONIC ACID; TRIMETHYLSILYL DERIVATIVE; UNCLASSIFIED DRUG;

EID: 34047181474     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2007-970751     Document Type: Article
Times cited : (16)

References (17)
  • 14
    • 28844459422 scopus 로고    scopus 로고
    • We also reported the Brønsted acid catalyzed intramolecular β-glycosidation of 1-C-alkyl-D-hexopyranoses to form the anhydroketopyranoses, see: Yamanoi, T.; Matsumura, K.; Matsuda, S.; Oda, Y. Synlett 2005, 2973; see also ref. 1c.
    • (d) We also reported the Brønsted acid catalyzed intramolecular β-glycosidation of 1-C-alkyl-D-hexopyranoses to form the anhydroketopyranoses, see: Yamanoi, T.; Matsumura, K.; Matsuda, S.; Oda, Y. Synlett 2005, 2973; see also ref. 1c.
  • 17
    • 34047102264 scopus 로고    scopus 로고
    • Typical Reaction Procedure (see, Table 1, Entry 4) A typical reaction procedure is as follows: to a stirred solution of the allyltrimethylsilane (85.1 μL, 0.54 mmol) and 1 (101.2 mg, 0.18 mmol) was added TMSOTf (6.6 μL, 0.036 mmol) in MeCN-CH2Cl2 (1:1, 3 mL) at -78°C in the presence of dry CaSO4 (ca. 100 mg) in an Ar atmosphere. The resulting mixture was stirred for 2 h. The reaction was then quenched by the addition of a sat. NaHCO3 solution (5 mL, The reaction mixture was extracted with EtOAc, and the organic layer was washed with H2O and a sat. NaCl solution. After the organic layer was dried over anhydrous Na2SO4, the solvent was evaporated under reduced pressure. The crude product was purified by preparative silica gel TLC (EtOAc-hexane, 1:4) to give 4 (61.2 mg, 58, Ketopyranoside 2: [α]D21 +64.4 c 1.12, CHCl3, 1H
    • +: 691.3030; found: 691.3077.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.