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31
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84986437005
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In these calculations, we used MM2* force field on MacroModel (ver. 4.5);.Mohamadi, F.; Richards, N. G. J.; Guida, W. C.; Liskamp, R.; Lipton, M.; Caufield, C.; Chang, G.; Hendrickson, T.; Still, W. C. J. Comput. Chem. 1990, 11, 440.
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Hendrickson, T.8
Still, W.C.9
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32
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1842700998
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4-Hydroxy-2-cyclopentenone is available from Sumitomo Chemical Co., Ltd.
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4-Hydroxy-2-cyclopentenone is available from Sumitomo Chemical Co., Ltd.
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33
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1842801925
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note
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-1.
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34
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1542792213
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The stereochemistry of the addition reaction (see 19) was established by converting the minor 9β-alcohol to a cyclic acetal derivative. Takahashi, T.; Tanaka, H.; Sakamoto, Y.; Yamada, H. Heterocycles 1996, 43, 945.
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(1996)
Heterocycles
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Takahashi, T.1
Tanaka, H.2
Sakamoto, Y.3
Yamada, H.4
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35
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84989539773
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Nishikawa, T.; Shibuya, S.; Hosokawa, S.; Isobe, M. Synlett 1994, 485.
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Synlett
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Nishikawa, T.1
Shibuya, S.2
Hosokawa, S.3
Isobe, M.4
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36
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1842650805
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note
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+, 3%), 461 (4), 431 (63), 419 (43), 415 (100), 361 (2);
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37
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1842801924
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Coupling reaction of bis(iodoalkyne) having tertiary methyl ether with 21 gave the aromatized product along with bisacetylene 24 in 13% and 26% yield, respectively
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Coupling reaction of bis(iodoalkyne) having tertiary methyl ether with 21 gave the aromatized product along with bisacetylene 24 in 13% and 26% yield, respectively.
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