Skip to main content
. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Bioorg Med Chem. 2013 Mar 5;21(17):5629–5646. doi: 10.1016/j.bmc.2013.02.016

Scheme 3.

Scheme 3

(a) HCHO, Me2N.HCl, NaOAc; (b) MeI; (c) CH3NO2, NaOMe; (d) CoCl2, NaBH4; (e) (EtO)3P, 160 °C; (f) 1M HCl, reflux; (g) NaBH4, EtOH; (h) conc HCl, 60 °C; (i) 48% HBr, 90 °C.