Several novel chiral bifuncti onal L -thiazo line-amid e derivatives were simp ly synth esized from co m-mercially availabl e L-cystein e and L-proline in high yield . These catalysts were subsequently appl ied to
the direct enan tioselective aldol reactions of vari ous aldehyde s, wh ich are rarely reported in the liter-ature. The products with a nti con fi guration were obtaine d up to 97% ee and 99 % dr wh en the L-th ia-zoline- amide derivatives were used. A plausi ble transition state model was proposed to explain the
obs erved enantio and diastereoselectivities.