et. al. J. Am. Chem. Soc.
et. al. J. Am. Chem. Soc.
et. al. J. Am. Chem. Soc.
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EtO<br />
O<br />
OH<br />
OH<br />
O<br />
di<strong>et</strong>hyl L-tartrate<br />
BH 3THF<br />
THF, reflux, 94 %<br />
OEt<br />
Preparation of the Starting Alcohol<br />
HO<br />
MeO<br />
MeO<br />
TsOH, DMF, 99 %<br />
HO<br />
OMPM<br />
OH<br />
OMe<br />
EtO<br />
O<br />
O<br />
O<br />
O<br />
Ar<br />
3-pentanone, TsOH<br />
THF, 89 %<br />
OEt<br />
NaBH 4, LiCl<br />
THF, 100 %<br />
Et<br />
O<br />
O<br />
Et<br />
OMPM<br />
HO<br />
OH<br />
O<br />
O<br />
Ar<br />
OH<br />
Somfai, P. <strong>et</strong>. <strong>al</strong>. T<strong>et</strong>rahedron 1993, 49, 6645.