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. Author manuscript; available in PMC: 2009 Jan 8.
Published in final edited form as: J Am Chem Soc. 2006 Sep 13;128(36):11906–11915. doi: 10.1021/ja062364i

Scheme 10a.

Scheme 10a

a Reagents and conditions: (a) allyl-OH, AcCl (88%); (b) Bu2SnO, PhMe; CsF, BnBr, DMF (67%); (c) TBSCl, imid, DMF (94%); (d) Ac2O, Et3N, DMAP, CH2Cl2 (99%); (e) Pd(PPh3)4, Et2Zn, THF; (f) TBAF, THF (59%, 2 steps); (g) TIPSCl, imid, DMAP, DMF (49%).