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. Author manuscript; available in PMC: 2013 Aug 16.
Published in final edited form as: J Med Chem. 2009 Feb 12;52(3):655–663. doi: 10.1021/jm801340z

Scheme 2.

Scheme 2

Reagents and conditions: i) CSA, Molecular Sieves 4Å, MeCN, 70 °C, 8 h, 60%; ii) BnNH2, 50 °C, 16 h, 95%; iii) m-CPBA, CH2Cl2, rt, 16 h, 81%; iv) (R)-(−)-2-aminobutanol, 170 °C, 4 h, 60%