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85031208000
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(a) Chatani N., Ikeda T., Sano T., Sonoda N., Kurosawa H., Kawasaki Y., Murai S. J. Org. Chem. 53:1988;3387
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36
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85031196961
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6-benzoyl-2′,3′-O-isopropylideneadenosine-5 ′-aldehyde (see Ref. 10d)
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6-benzoyl-2′,3′-O-isopropylideneadenosine-5 ′-aldehyde (see Ref. 10d).
-
-
-
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37
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85031208578
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1d in the ring closure of 4′-(p-toluenesulfonyl)oxymethyluridine. They ascribed this selectivity for the formation of a 4-membered ring to the predominant S-puckering of the ribose ring, which locates the 3′-OH in close proximity to the 4′-carbon center
-
1d in the ring closure of 4′-(p-toluenesulfonyl)oxymethyluridine. They ascribed this selectivity for the formation of a 4-membered ring to the predominant S-puckering of the ribose ring, which locates the 3′-OH in close proximity to the 4′-carbon center.
-
-
-
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38
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85031198890
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The chemical shift of H4 shifted from 5.06 ppm (21) to 5.31 ppm (38), while the chemical shift of H3 shifted from 3.98 ppm (21) to 4.80 ppm (38) (see Section 4)
-
The chemical shift of H4 shifted from 5.06 ppm (21) to 5.31 ppm (38), while the chemical shift of H3 shifted from 3.98 ppm (21) to 4.80 ppm (38) (see Section 4).
-
-
-
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41
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85031195008
-
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3P and Boc-ON prior to the substitution of the mesyl with NaCN the major product that was isolated did not correspond to the desired Boc-protected amine adduct 40, but appeared to be the tricyclic compound 41. Apparently the intermolecular attack of the intermediate iminophosphorane on the mesyl protected primary hydroxyl proceeds faster than the intramolecular reaction with Boc-ON
-
3P and Boc-ON prior to the substitution of the mesyl with NaCN the major product that was isolated did not correspond to the desired Boc-protected amine adduct 40, but appeared to be the tricyclic compound 41. Apparently the intermolecular attack of the intermediate iminophosphorane on the mesyl protected primary hydroxyl proceeds faster than the intramolecular reaction with Boc-ON.
-
-
-
-
42
-
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85031206416
-
-
3 also resulted in partial cleavage of the TBDPS group
-
3 also resulted in partial cleavage of the TBDPS group.
-
-
-
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43
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0030873950
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Sen S.E., Roach S.L., Boggs J.K., Ewing G.J., Magrath J. J. Org. Chem. 62:1997;6684.
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Sen, S.E.1
Roach, S.L.2
Boggs, J.K.3
Ewing, G.J.4
Magrath, J.5
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44
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85031201916
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The chemical shift of H4 shifted from 5.02 ppm (32) to 5.29 ppm (39), while the chemical shift of H3 shifted from 3.09 ppm (32) to 4.92 ppm (39) (see Section 4)
-
The chemical shift of H4 shifted from 5.02 ppm (32) to 5.29 ppm (39), while the chemical shift of H3 shifted from 3.09 ppm (32) to 4.92 ppm (39) (see Section 4).
-
-
-
-
48
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-
85031195426
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-
2,3 coupling constant of BSAA 2 could not be determined due to signal overlap
-
2,3 coupling constant of BSAA 2 could not be determined due to signal overlap.
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-
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