反应详情

The above crude 99A was dissolved in EtOAc (20 mL) and MeOH (20 mL) and treated with 10% Pd/C. The reaction mixture was stirred under a hydrogen atmosphere for 4.5 hours and then filtered to remove the catalyst. The filtrate was concentrated and the resulting solid was collected by filtration, rinsed with EtOAc and dried to give the desired product (23 mg). Compound 99B had an analytical HPLC retention time=2.433 min. (Chromolith SpeedROD column 4.6×50 mm, 10%-90% aqueous methanol over 4 minutes containing 0.1% TFA, 4 ml/min, monitoring at 220 nm) and a LC/MS M++1=417+.

1. filtrationfiltered
2. customto remove the catalyst
3. concentrationThe filtrate was concentrated
4. filtrationthe resulting solid was collected by filtration
5. washrinsed with EtOAc
6. customdried