The meso diacetate, 9, available in seven steps from piperonal, is efficiently desymmetrized with preferential cleavage of the R-arm-acetate under catalysis by porcine pancreatic lipase in 10% DMSO-phosphate buffer, pH 8. The resulting monoacetate 12, a potentially useful chiral building block for the synthesis of derivatives of the Podophyllum lignans, is obtained in good chemical yield (66-83%) and in high optical yield (95% ee) on a multigram scale.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry