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15
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0019813172
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For unsuccessful approaches to cyathins see: (a) Ayer, W. A.; Ward, D. E.; Browne, L. M.; Delbaere, L. T. J.; Hoyano, Y. Can. J. Chem. 1981, 59, 2665. (b) Ward, D. E. Can. J. Chem. 1987, 65, 2380. (c) Dahnke, K. R.; Paquette, L. A. J. Org. Chem. 1994, 59, 885.
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16
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0000718903
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For unsuccessful approaches to cyathins see: (a) Ayer, W. A.; Ward, D. E.; Browne, L. M.; Delbaere, L. T. J.; Hoyano, Y. Can. J. Chem. 1981, 59, 2665. (b) Ward, D. E. Can. J. Chem. 1987, 65, 2380. (c) Dahnke, K. R.; Paquette, L. A. J. Org. Chem. 1994, 59, 885.
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Ward, D.E.1
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17
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0028353349
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For unsuccessful approaches to cyathins see: (a) Ayer, W. A.; Ward, D. E.; Browne, L. M.; Delbaere, L. T. J.; Hoyano, Y. Can. J. Chem. 1981, 59, 2665. (b) Ward, D. E. Can. J. Chem. 1987, 65, 2380. (c) Dahnke, K. R.; Paquette, L. A. J. Org. Chem. 1994, 59, 885.
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18
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2 has been reported recently: Tori, M.; Toyoda, N.; Sono, M. J. Org. Chem. 1998, 63, 306.
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19
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0000074779
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2 has been reported recently: Tori, M.; Toyoda, N.; Sono, M. J. Org. Chem. 1998, 63, 306.
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0001280769
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38
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0000387189
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(a) Connor, D. S.; Klein, G. W.; Taylor, G. N.; Boeckman, R. K., Jr.; Medwid, J. B. Organic Synthesis; Wiley: New York, 1988; Collect. Vol. 6, p 101.
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0001652973
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41
-
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0001326527
-
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For an alternative conversion of a benzyloxymethyl carboxaldehyde to a methyl carboxaldehyde, see: Taber, D. F.; Campbell, C.; Gunn, B. P.; Chiu, I.-C. Tetrahedron Lett. 1981, 22, 5141.
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42
-
-
7344236283
-
-
note
-
6ax. Molecular mechanics calculations indicate that 38 is rigid and that the pseudoequatorial α′ proton that is long-range coupled to the α proton with J = 1.0 Hz should be vicinally coupled to CHOSi with a small coupling constant (1.5 Hz), as is observed. In the diastereomer of 38, the pseudoequatorial α′ proton would be vicinally coupled to CHOSi with a large coupling constant.
-
-
-
-
44
-
-
0001134172
-
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Heathcock, C. H.; Mahaim, C.; Schlecht, M. F.; Utawanit, T. J. Org. Chem. 1984, 49, 3264.
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47
-
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33845560979
-
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Nakata, T.1
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Oishi, T.4
-
49
-
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0001054973
-
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(b) García Martínez, A.; Martínez Alvarez, R.; Madueño Casado, M.; Subramanian, L. R.; Hanack, M. Tetrahedron 1987, 43, 275.
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García Martínez, A.1
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Subramanian, L.R.4
Hanack, M.5
-
50
-
-
85066152855
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Zipkin, R. E.; Natale, N. R.; Taffer, I. M.; Hutchins, R. O. Synthesis 1980, 1035.
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Zipkin, R.E.1
Natale, N.R.2
Taffer, I.M.3
Hutchins, R.O.4
-
51
-
-
7344219886
-
-
note
-
27b the observed value for 17 is consistent with a 2,4-cycloheptadienone.
-
-
-
-
53
-
-
7344238540
-
-
note
-
2, erinacine A, and erinacine A triacetate.
-
-
-
-
54
-
-
2842537227
-
-
Bock, K.; Pedersen, C.; Rasmussen, P. Acta Chem. Scand. B 1975, 29, 389.
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Bock, K.1
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Rasmussen, P.3
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56
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-
0023628285
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(b) Ojika, M.; Wakamatsu, K.; Niwa, H.; Yamada, K. Tetrahedron 1987, 43, 5275.
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Ojika, M.1
Wakamatsu, K.2
Niwa, H.3
Yamada, K.4
-
57
-
-
7344251227
-
-
All synthetic compounds are racemic, except for 4 and 42-44
-
All synthetic compounds are racemic, except for 4 and 42-44.
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-
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