Synthesis of (±)-<i>cis</i>-1-[2-(Hydroxymethyl)-1, 3-Oxathiolan-5-yl]cytosine and Its (±)-<i>trans</i>Isomer
作者:Jim J. Huang、Janet L. Rideout、Gary E. Martin
DOI:10.1080/15257779508014663
日期:1995.2
The title compounds were synthesized by the formation of 2-[(benzyloxy)methyl] -1,3-oxathiolan-5-one and subsequent DIBALH reduction, acetylation, coupling with N-(1,2-dihydro-2-oxo-4-pyrimidinyl)-2-ethylhexanamide and deprotection.
Asymmetric synthesis of 1,3-oxathiolan-5-one derivatives through dynamic covalent kinetic resolution
The asymmetric synthesis of 1,3-oxathiolan-5-one derivatives through an enzyme-catalyzed, dynamic covalent kineticresolution strategy is presented. Dynamic hemithioacetal formation combined with intramolecular, lipase-catalyzed lactonization resulted in good conversions with moderate to good enantiomeric excess (ee) for the final products. The process was evaluated for different lipase preparations