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5
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73649131742
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For isolation of codonopsinine 1 and codonopsine 2, see
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For isolation of codonopsinine 1 and codonopsine 2, see:
-
-
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7
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73649083102
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Chem. Abstr. 71 (1969) 132545z
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Chem. Abstr.
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9
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73649128994
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Chem. Abstr. 71 (1970) 25712d
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Chem. Abstr.
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-
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10
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73649144634
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For synthesis of codonopsinine 1 and codonopsine 2, see
-
For synthesis of codonopsinine 1 and codonopsine 2, see:
-
-
-
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20
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0344944860
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25
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44349118982
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Chem. Abstr. 77 (1972) 135091r
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(1972)
Chem. Abstr.
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26
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73649139707
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For isolation of radicamine 4, see
-
For isolation of radicamine 4, see:
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27
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0034757397
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Shibano M., Tsukamoto D., Masuda A., Tanaka Y., and Kusano G. Chem. Pharm. Bull. 49 (2001) 1362
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29
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73649133065
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For synthesis of radicamine 4, see
-
For synthesis of radicamine 4, see:
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32
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35648967109
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Merino P., Delso I., Teiero T., Cardona F., and Goti A. Synlett (2007) 2651
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Liu, C.1
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37
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40549141786
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For isolation of codonopsinol 5, see
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For isolation of codonopsinol 5, see. Ishida S., Okasaka M., Ramos F., Kashiwada Y., Takaishi Y., Kodzhimatov O.K., and Ashurmetov O. J. Nat. Med. 62 (2008) 236
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Ashurmetov, O.7
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38
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56349119576
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For synthesis of codonopsinol 5, see
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For synthesis of codonopsinol 5, see. Tsou E.-L., Chen S.-Y., Yang M.-H., Wang S.-C., Cheng T.-R.R., and Cheng W.-C. Bioorg. Med. Chem. 16 (2008) 10198
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40
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73649090533
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Ref 3a;
-
Ref 3a;
-
-
-
-
47
-
-
73649118941
-
-
The acid catalysed amido cyclisation was also later observed by Ribes et al. see: Ref 6a;
-
The acid catalysed amido cyclisation was also later observed by Ribes et al. see: Ref 6a;
-
-
-
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48
-
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73649109681
-
-
For the synthesis of 2,5-Di aryl sustituted tetrahydofurans through the acid mediated cyclisation, see:
-
For the synthesis of 2,5-Di aryl sustituted tetrahydofurans through the acid mediated cyclisation, see:
-
-
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49
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0026673917
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Girotra N.N., Biftu T., Ponpipom M.M., Acton J.J., Alberts A.W., Bach T.N., Ball R.G., Bugianesi R.L., and Chabala J.C. J. Med. Chem. 35 (1992) 3474
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Girotra, N.N.1
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Acton, J.J.4
Alberts, A.W.5
Bach, T.N.6
Ball, R.G.7
Bugianesi, R.L.8
Chabala, J.C.9
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50
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15444347390
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Xiong Cai X., Scannell R.T., Yaeger D., Hussoin M.S., Killian D.B., Qian C., Eckman J., Hwang S.-B., Garahan L.L., Yeh C.G., Ip S.H., and Shen T.Y. J. Med. Chem. 41 (1998) 1970
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Xiong Cai, X.1
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Yeh, C.G.10
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51
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73649095997
-
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Some general methods for acid catalyzed N-benzylation of amides. see
-
Some general methods for acid catalyzed N-benzylation of amides. see:
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52
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0029919489
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Henneuse C., Boxus T., Tsebin L., Pantano G., and Marchand-Brynaert J. Synthesis (1996) 495
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Henneuse, C.1
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54
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0345686459
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56
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0036025618
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Long D.D., Smith M.D., Martin A., Wheatley J.R., Watkin D.G., Muller M., and Fleet G.W.J. J. Chem. Soc., Perkin Trans. 1 (2002) 1982
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Long, D.D.1
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Watkin, D.G.5
Muller, M.6
Fleet, G.W.J.7
-
57
-
-
73649137276
-
-
note
-
Cbz group is preferred over Boc protection since Cbz is more stable under TFA conditions thus allowing the cyclisation to better yield.
-
-
-
-
59
-
-
73649084902
-
-
note
-
2O), 6.64 (d, 1H, J=8.2, Ph), 6.74 (dd, 1H, J=1.5, 8.2, Ph), 6.84 (d, 1H, J=1.6, Ph), 7.19-7.38 (m, 10H, Ph).
-
-
-
-
60
-
-
73649106688
-
-
note
-
The structure of 2-epi-codonopsinol 6 can be established thorough 1D nuclear Overhause enhancement (NOE) correlations{A figure is presented}.
-
-
-
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