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A SYNTHETIC ROUTE TO ECHINOPINES A AND B

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Presentation on theme: "A SYNTHETIC ROUTE TO ECHINOPINES A AND B"— Presentation transcript:

1 A SYNTHETIC ROUTE TO ECHINOPINES A AND B
By: Alain Grandbois Jolaine Savoie Brice Stenne Julie Coté Yassir El-Azizi

2 OUR RETROSYNTHETIC APPROACH

3 PREPARATION OF THE PRECURSOR FOR KEY STEP 1

4 FIRST KEY STEP Kobayashi, T.; Koga, Y.; Narasaka, K. J. Org. Chem, 2001, 624, 73.

5 SECOND KEY STEP 93: 7 Tzvetkov, T. N.; Stammler, H.-G., Mattay, J. Eur. J. Org. Chem. 2006,351.

6 THIRD KEY STEP 3d

7 SOME COOKING - PART 1 Mikaye, H.; Nakao, Y.; Sasaki, M. Chem. Lett. 2007, 36,

8 FOURTH KEY STEP Paquette, L. A.; Schaefer, A.G.; Springer, J.P. Tetrahedron, 1987, 43,

9 SOME COOKING – PART 2 Srikrishna, A.; Krishnan, K. Tetrahedron, 1992, 48,

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