... Biomol. Chem., 2004, 2, 2061-2070 Show Compounds Show Chemical Terms. ... We then examined hydrophobic protection of the 2-hydroxyl group to facilitate isolation by extraction with organic solvents. ... i) (a) NaBH 4 , CH 2 Cl 2 , MeOH, −4 °C, (b) 1 M HCl, 77%, (ii) H 2 , 5% Pd ...