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Volumn , Issue 6, 2010, Pages 893-896

A facile H2SO4/4 Å molecular sieves catalyzed synthesis of 2,3-unsaturated O -glycosides via ferrier-type rearrangement

Author keywords

D glucal; Ferrier rearrangement; Glycosylation; Molecular sieves; O glycosides; Sulfuric acid

Indexed keywords

GLYCOSIDE; SULFURIC ACID;

EID: 77949889654     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-0029-1219539     Document Type: Article
Times cited : (27)

References (59)
  • 7
    • 77949898191 scopus 로고    scopus 로고
    • Name Reactions 3rd ed. Springer Berlin
    • , Li J J., Name Reactions 3rd ed. Springer Berlin 2002 119
    • (2002) , vol.119
    • Li, J.J.1
  • 51
    • 0031912817 scopus 로고    scopus 로고
    • Oberdorfer and co-workers have demonstrated similar Ferrier rearrangement using d -galactal for the construction of the (2 R)-2-hydroxy-6,8- dioxabicyclo[3.2.1]oct-3-ene via an intramolecular pathway in 40% yield: 1998
    • Oberdorfer and co-workers have demonstrated similar Ferrier rearrangement using d -galactal for the construction of the (2 R)-2-hydroxy-6,8- dioxabicyclo[3.2.1]oct-3-ene via an intramolecular pathway in 40% yield:, Oberdorfer F, Haeckel R, Lauer G, Synthesis 1998 201
    • Synthesis , pp. 201
    • Oberdorfer, F.1    Haeckel, R.2    Lauer, G.3
  • 58
    • 77949909293 scopus 로고    scopus 로고
    • Note
    • General Experimental Procedure Typically, H2SO4 (0.3 equiv, 16 ?L) was added to the mixture of D-glucal (1 mmol, 272 mg), 4 ? MS (272 mg) and alcohol (1.5 equiv) in CH2Cl2, and the reaction mixture was stirred for 5 min at r.t. After the reaction was completed, the reaction mixture was filtered and washed with CH2Cl2. The combined organic layer was washed with sat. NaHCO3 solution (10 mL) and sat. brine (10 mL), and then dried over anhyd Na2SO4. After evaporation of the solvent under reduced pressure, the crude products were purified by silica gel column chromatography (PE?EtOAc = 10:1). (34)
  • 59
    • 77949891841 scopus 로고    scopus 로고
    • Note
    • Selected Spectral Data n-Pentyl 4,6-Di-O-acetyl-2,3-dideoxy-a-D-erythro- hex-2- enopyranoside (5b) 1H NMR (500 MHz, CDCl3): δ= 0.91 (t, J = 6.7 Hz, 3 H), 1.34?1.37 (m, 4 H), 1.59?1.63 (m, 2 H), 2.07?2.10 (m, 6 H), 3.48?3.53 (m, 1 H), 3.75?3.80 (m, 1 H), 4.09?4.27 (m, 3 H, H-5, H-6a, H-6b), 5.03 (s, 1 H, H-1), 5.30?5.32 (dd, 1 H, J = 9.6 Hz, H-4), 5.83?5.89 (m, 2 H, H-2, H-3) ppm. 13C NMR (125 MHz, CDCl3): δ= 13.94, 20.69, 20.88, 22.40, 28.31, 29.32, 62.99, 65.27, 66.81, 68.87, 94.31, 127.92, 128.89, 170.22, 170.71 ppm. ESI-MS: m/z = 323.10 [M +Na+]. n-Decyl 4,6-Di-O-acetyl-2,3-dideoxy-a-D-erythro-hex-2- enopyranoside (6b) 1H NMR (500 MHz, CDCl3): δ= 0.86 (t, 3 H), 1.26?1.35 (m, 16 H), 2.07?2.09 (m, J = 9.2 Hz, 6 H), 3.49 (m, 1 H), 4.09? 4.26 (m, 3 H, H-5, H-6a, H-6b), 5.01 (s, 1 H, H-1), 5.29?5.32 (dd, J = 1.3, 9.7 Hz, 1 H, H-4), 5.83?5.88 (m, 2 H, H-2, H- 3) ppm. 13C NMR (125 MHz, CDCl3): δ= 14.00, 20.69, 20.87, 22.58, 25.67, 26.16, 29.23, 29.36, 29.47, 31.81, 32.70, 62.92, 64.37, 66.80, 68.94, 94.32, 127.90, 128.88, 170.27, 170.76 ppm. ESI-MS: m/z = 393.20 [M + Na+] 2-Ethylhexyl 4,6-Di-O-acetyl-2,3-dideoxy-a-D-erythrohex- 2-enopyranoside (12b) 1H NMR (500 MHz, CDCl3): δ= 0.86?0.91 (m, 6 H), 1.26? 1.33 (m, 8 H), 1.34?1.42 (m, 1 H), 2.09?2.10 (m, J = 5.7 Hz, 6 H), 3.36?3.38 (q, 1 H), 3.54?3.55 (d, 1 H), 3.70?3.71 (t, 1 H), 4.08?4.25 (m, 3 H, H-5, H-6a, H-6b), 5.00 (s, 1 H, H-1), 5.29?5.31 (dd, J = 9.7 Hz, 1 H, H-4), 5.82?5.94 (m, 2 H, H-2, H-3) ppm. 13C NMR (125 MHz, CDCl3): δ= 11.02, 13.99, 20.67, 20.87, 22.94, 23.68, 28.93, 30.49, 39.57, 63.03, 65.28, 66.87, 72.64, 94.45-94.53, 127.95, 128.74, 170.21, 170.71 ppm. ESI-MS: m/z = 365.14 [M + Na+]. 2-yanoethyl 4,6-Di-O-acetyl-2,3-dideoxy-a-D-erythrohex- 2-enopyranoside (15b) 1H NMR (500 MHz, CDCl3): δ= 2.08?2.10 (m, J = 10.0 Hz, 6 H), 2.64?2.71 (m, 2 H), 3.76?3.97 (m, 2 H), 4.12?4.22 (m, 3 H, H-5, H-6a, H-6b), 5.07 (s, 1 H, H-1), 5.29?5.31 (dd, 1 H, J = 1.0, 9.5 Hz, H-4), 5.81?5.93 (m, 2 H, H-2, H-3) ppm. 13C NMR (125 MHz, CDCl3): δ= 18.96, 20.56, 20 72, 62.69, 63.26, 64.85, 67.14, 94.60, 117.58, 126.70, 129.57, 170.13, 170.59 ppm. ESI-MS: m/z = 306.07 [M + Na+]. Trichloroethyl 4,6-Di-O-acetyl-2,3-dideoxy-a-D- erythrohex- 2-enopyranoside (17b) 1H NMR (500 MHz, CDCl3): δ= 2.07?2.13 (m, J = 10.8 Hz, 6 H), 4.17?4.18 (d, 2 H), 4.27?4.36 (m, 3 H, H-5, H-6a, H- 6b), 5.31 (s, 1 H, H-1), 5.37?5.38 (dd, J = 9.2 Hz, 1 H, H-4), 5.97?6.00 (m, 2 H, H-2, H-3) ppm. 13C NMR (125 MHz, CDCl3): δ= 20.76, 20.87, 62.66, 65.01, 67.49, 76.15, 79.61, 96.37, 126.38, 130.20, 170.39, 170.92 ppm. ESI-MS: m/z = 382.94 [M + Na+].


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