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. Author manuscript; available in PMC: 2012 Oct 10.
Published in final edited form as: J Med Chem. 1994 Oct 14;37(21):3614–3621. doi: 10.1021/jm00047a018

Scheme 1a.

Scheme 1a

a Reagents: (a) TBDPSiCl, DMAP, DMF, room temperature; (b) Bz2O, py; (c) n-Bu4NF, THF; (d) RuO2, NaIO4, CHCl3–CH3CN–H2O (2:2:3); (e) EDAC, DMAP, MeOH; (f) MeNH2, THF, 75 °C; (g) BzCl, py–CH2Cl2; (h) Ac2O, H2SO4, AcOH.