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1
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12244305296
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Editio Academiae Scientiarum USSR, Tashkent
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Vvednski A.I. Flora Uzbekistana Vol. 5 (1961), Editio Academiae Scientiarum USSR, Tashkent 313
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(1961)
Flora Uzbekistana
, vol.5
, pp. 313
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Vvednski, A.I.1
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2
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0037250817
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Uchiyama N., Kiuchi F., Ito M., Honda G., Takeda Y., Khodzhimatov O.K., and Ashurmetov O.A. J. Nat. Prod. 66 (2003) 128
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(2003)
J. Nat. Prod.
, vol.66
, pp. 128
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Uchiyama, N.1
Kiuchi, F.2
Ito, M.3
Honda, G.4
Takeda, Y.5
Khodzhimatov, O.K.6
Ashurmetov, O.A.7
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3
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0028134104
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For the isolation of coulterone from other plants, see:
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For the isolation of coulterone from other plants, see:. Frontana B., Cardenas J., and Rodriguez-Hahn L. Phytochem. 36 (1994) 739
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(1994)
Phytochem.
, vol.36
, pp. 739
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Frontana, B.1
Cardenas, J.2
Rodriguez-Hahn, L.3
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5
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24944588765
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For the first synthesis of (±)-komaroviquinone, see:
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For the first synthesis of (±)-komaroviquinone, see:. Sengupta S., Drew M.G.B., Mukhopadhyay R., Achari B., and Banerjee A.K. J. Org. Chem. 70 (2005) 7694
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(2005)
J. Org. Chem.
, vol.70
, pp. 7694
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Sengupta, S.1
Drew, M.G.B.2
Mukhopadhyay, R.3
Achari, B.4
Banerjee, A.K.5
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7
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45149115723
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note
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For our synthesis of (±)-komaroviquinone, see the preceding manuscript.
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8
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45149106442
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note
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The spectroscopic data obtained for all new compounds were fully consistent with the assigned structures. Reaction conditions have not been optimized. All yields are isolated yields.
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9
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0028086375
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For a synthesis of (±)-perovskone, see:
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For a synthesis of (±)-perovskone, see:. Majetich G., and Zhang Y. J. Am. Chem. Soc. 116 (1994) 4979
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(1994)
J. Am. Chem. Soc.
, vol.116
, pp. 4979
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Majetich, G.1
Zhang, Y.2
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10
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0242543781
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A manuscript describing a synthesis of (+)-perovskone is under review |G. Majetich, Y. Zhang, X. Tian, J. F. Britton, Y. Wang, and Yang Li|. For our synthesis of (+)-salvadione-A, see:
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A manuscript describing a synthesis of (+)-perovskone is under review |G. Majetich, Y. Zhang, X. Tian, J. F. Britton, Y. Wang, and Yang Li|. For our synthesis of (+)-salvadione-A, see:. Majetich G., Wang Y., Li Y., Vohs J.K., and Robinson G.H. Org. Lett. 5 (2003) 3847
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(2003)
Org. Lett.
, vol.5
, pp. 3847
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Majetich, G.1
Wang, Y.2
Li, Y.3
Vohs, J.K.4
Robinson, G.H.5
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19
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45149083716
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note
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The preparation of enone 8 is detailed in the preceding manuscript of this journal.
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20
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45149116800
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note
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We believe that capricious water causes the Lewis acid to hydrolyze the enol ether to form enedione 19a. Intramolecular addition of the arene to ketone 19a, followed by rearomatization of the C ring, produces 19b. Dehydration of the tertiary alcohol results in the aromatization of the B-ring. {A figure is presented}
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33
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45149083431
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note
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In related work, we have found that the C(l),C(10)-double bond of diene 12 readily isomerizes into conjugation with the C(6),C (7)-double bond upon exposure to either protic or Lewis acids. Thus in the first step, the oxidant adds to the C(I) carbon with migration of the double bond into the ring fusion (cf. 12ii).This intermediate is then further oxidized to generate conjugated dienone. {A figure is presented}
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34
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45149087535
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note
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p3, R(1) = 0.0842 for 1721 observed reflections (I > 2 σ(I)). All non-hydrogen atoms were refined anisotropically. Hydrogen atoms were treated as idealized contributions. {A figure is presented}
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