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0344555860
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X-ray crystallography was done by Veldman, N.; Menzer, S.; Spek, A. L. Bijvoet Center for Biomolecular Research, Department of Crystal and Structural Chemistry, Utrecht University
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X-ray crystallography was done by Veldman, N.; Menzer, S.; Spek, A. L. Bijvoet Center for Biomolecular Research, Department of Crystal and Structural Chemistry, Utrecht University.
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0344986830
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note
-
To prevent this base-catalyzed isomerization the less basic organocerium reagent was studied in the addition reaction, but this did not yield the addition product due to the low reactivity of the organocerium reagent.
-
-
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40
-
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0344555851
-
-
note
-
PPTS was used as a catalyst for the aldol condensation, because the more acidic PTSA yielded many side products (see also note 26).
-
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42
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0344124291
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For similar fast trapping of enolates by oxygen, see: (a) Koreeda, M.; You, Z. J. Org. Chem. 1989, 54, 5195-5198. (b) Gallagher, T. F.; Adams, J. L. J. Org. Chem. 1992, 57, 3347-3353.
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0343760145
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For similar fast trapping of enolates by oxygen, see: (a) Koreeda, M.; You, Z. J. Org. Chem. 1989, 54, 5195-5198. (b) Gallagher, T. F.; Adams, J. L. J. Org. Chem. 1992, 57, 3347-3353.
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45
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0345418017
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note
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3 during NMR recording to give a triol.
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46
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84981751450
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5OH) [see: Akiko, O.; Haruhisa, K.; Tsuyoshi, T. Chem. Pharm. Bull. 1996, 44, 1540-1545].
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Raffel, R.J.13
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48
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37049042103
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5OH) [see: Akiko, O.; Haruhisa, K.; Tsuyoshi, T. Chem. Pharm. Bull. 1996, 44, 1540-1545].
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This compound is isolated from Ajuga lupulina. Chen, H.; Tan, R. X.; Liu, Z. L.; Zhang, Y. J. Nat. Prod. 1996, 59, 668-670. However, their reported fragment peaks are not in accordance with the ones we found.
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0344986829
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note
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3 and MeOH. See also ref 18. (equation presented)
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