of 11.8 mg (0.0535 mmol) of 25 in 1 mL of freshly distilled acetic acid was hydrogenated in a Parr apparatus at 3-3.5 atm for 19 h in the presence of 30 mg of Pt02 catalyst. The reaction mixture was filtered and evaporation of the solvent gave 18.5 mg of colorless liquid. Flash chromatography (1:9 ether-hexane) gave 12.5 mg of a 9:1 mixture of diastereomeric alcohols 26. Data for the separated major isomer included the following: IR 3480,1735 (acetic acid, trace),

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