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0010441109
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Deng, L.6
Bennett, D.W.7
Cook, J.M.8
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12
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33947475668
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16
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0000401149
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Lee, D.L.1
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17
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0030972668
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14. Lounasmaa, M.; Miikki, L.; Tolvanen, A., Tetrahedron 1997, 53, 5349-5356.
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Lounasmaa, M.1
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Tolvanen, A.3
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18
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0010445626
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-
15. For an additional example, see: Benz, G.; Riesner, H.; Winterfeldt, E., Chem. Ber. 1975, 108, 248-259.
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Benz, G.1
Riesner, H.2
Winterfeldt, E.3
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19
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0022412603
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16. Ar was bubbled through TFA prior to epimerization to avoid oxidation at C-12b: Bohlmann, C.; Bohlmann, R.; Rivera, E. G.; Vogel, C.; Manandhar, M. D.; Winterfeldt, E., Liebigs Ann. Chem. 1985, 1752-1763.
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Bohlmann, C.1
Bohlmann, R.2
Rivera, E.G.3
Vogel, C.4
Manandhar, M.D.5
Winterfeldt, E.6
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23
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0010445960
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note
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20. Due to the flexibility of the 10-membered ring in compound 20, several signals are broad. Distinguishable signals not assigned appeared at δ 39.0, 32.8, 26.5, 22.6, and 21.0.
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