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1
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0016604977
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Shoji, J.; Sakajaki, R.; Wakisaka, Y.; Koizumi, K.; Mayama, M.; Matsurra, S. J. J. Antibiot. 1975, 28, 122.
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Shoji, J.1
Sakajaki, R.2
Wakisaka, Y.3
Koizumi, K.4
Mayama, M.5
Matsurra, S.J.6
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4
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0019469697
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For didemnins, see for example: (a) Rinehart, K. L.; Gloer, J. B.; Hughes, R. G.; Renis, H. E.; McGovern, J. P.; Swynenberg, E. B.; Stringfellow, D. A.; Kuentzel, S. L.; Li, L. H. Science 1981, 211, 933.
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Science
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Rinehart, K.L.1
Gloer, J.B.2
Hughes, R.G.3
Renis, H.E.4
McGovern, J.P.5
Swynenberg, E.B.6
Stringfellow, D.A.7
Kuentzel, S.L.8
Li, L.H.9
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5
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0023584049
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(b) Dolastatin 10: Pettit, G. R.; Kamano, Y.; Herald, C. L.; Tuinman, A. A.; Boettner, F. E.; Kizu, H.; Schmidt, J. M.; Baczynskyj, L.; Tomer, K. B.; Bontems, R. J. J. Am. Chem. Soc. 1987, 109, 6883.
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J. Am. Chem. Soc.
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Pettit, G.R.1
Kamano, Y.2
Herald, C.L.3
Tuinman, A.A.4
Boettner, F.E.5
Kizu, H.6
Schmidt, J.M.7
Baczynskyj, L.8
Tomer, K.B.9
Bontems, R.J.10
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6
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0013904868
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See, for example: Kondo, S. I.; Akita, E.; Sezaki, M. J. Antibiot. 1966, 19, 137.
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(1966)
J. Antibiot.
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, pp. 137
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Kondo, S.I.1
Akita, E.2
Sezaki, M.3
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9
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0034686886
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(c) Kiyooka, S.; Goh, K.; Nakamura, Y.; Takesue, H.; Hena, M. A. Tetrahedron Lett. 2000, 41, 6599.
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(2000)
Tetrahedron Lett.
, vol.41
, pp. 6599
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Kiyooka, S.1
Goh, K.2
Nakamura, Y.3
Takesue, H.4
Hena, M.A.5
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12
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3242754198
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(f) Kumar Pandey, S.; Kandula, S.V.; Kumar, P. Tetrahedron Lett. 2004, 45, 5877.
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Tetrahedron Lett.
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Kumar Pandey, S.1
Kandula, S.V.2
Kumar, P.3
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13
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33745687267
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note
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For example: ref. 2a, 13 steps from protected serine; ref. 5f, 12 steps from propanediol; ref. 5e, 18 steps from a propargylic epoxide. Moreau and Campagne obtained a semi-protected ester derivative of 1 in six steps overall (ref. 5d).
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15
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11444267400
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Angew. Chem. 2004, 116, 3389; there are numerous methods for the stereoselective preparation of β-hydroxy-γ-amino acids, so-called statins.
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Angew. Chem.
, vol.116
, pp. 3389
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19
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37049082507
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(e) Jouin, P.; Castro, B.; Nisato, D. J. Chem. Soc., Perkin Trans. 1 1987, 1177.
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J. Chem. Soc., Perkin Trans. 1
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Jouin, P.1
Castro, B.2
Nisato, D.3
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21
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0023105558
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(b) Earlier works used reduced amounts of enolate, see, for example: Lynch, J. E.; Volante, R. P.; Wattley, R. V.; Shinkai, I. Tetrahedron Lett. 1987, 28, 1385.
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(1987)
Tetrahedron Lett.
, vol.28
, pp. 1385
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Lynch, J.E.1
Volante, R.P.2
Wattley, R.V.3
Shinkai, I.4
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22
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33745701471
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note
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7Na [M + Na]: 494.2149; found: 494.2141.
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23
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33845278140
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Evans, D. A.; Chapman, K. T.; Carreira, E. M. J. Am. Chem. Soc. 1988, 110, 3560.
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(1988)
J. Am. Chem. Soc.
, vol.110
, pp. 3560
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Evans, D.A.1
Chapman, K.T.2
Carreira, E.M.3
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24
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33745729500
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note
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+: 496.2306; found: 496.2299.
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25
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33745729501
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note
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Ref. 5d describes the synthesis of protected galantinic butyl ester in eight steps from a commercially available serine derivative. We found that the deprotection of this butyl ester under basic conditions results in partial decomposition, epimerization, lactone formation and dehydration. The use of an acid-labile protecting group such as in the route presented in this letter thus greatly facilitates deprotection and thus the preparation of target galantinic acid.
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