Skip to main content
. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Bioorg Med Chem Lett. 2012 May 8;22(13):4413–4417. doi: 10.1016/j.bmcl.2012.04.126

Scheme 2.

Scheme 2

Reagents and conditions: a. TFA, CH2Cl2; b. NaBH(OAc)3, HOAc, Cl(CH2)2Cl, R3CHO; c. R3COCl, TEA; d. R3SO2Cl, TEA; e. R3NCO; f. R3OCOCl, TEA, CH2Cl2.