Diastereoselective and enantioselective preparation of nor-mevaldic acid surrogates through desymmetrisation methodology. Enantioselective synthesis of (+) and (−) nor-mevalonic lactones
作者:José Manuel Botubol-Ares、María Jesús Durán-Peña、Rosario Hernández-Galán、Isidro G. Collado、Laurence M. Harwood、Antonio J. Macías-Sánchez
DOI:10.1016/j.tet.2015.08.010
日期:2015.10
Solvent-free desymmetrisation of a meso-dialdehyde with chiral alcohols, led to preparation of 4-silyloxy-6-alkyloxytetrahydro-2H-pyran-2-one derivatives with a 96% de. This methodology, which yields the corresponding methyl nor-mevaldates with 99% ee, has been applied to the enantioselective synthesis of the (−)-(R) and (+)-(S) nor-mevalonic acid lactones.
的无溶剂的去对称内消旋-dialdehyde与手性醇,导致制备的4-甲硅烷氧基-6- alkyloxytetrahydro -2- ħ -吡喃-2-酮用96%去衍生物。该方法可产生具有99%ee的相应甲基正甲羟戊酸酯,已应用于(-)-(R)和(+)-(S)甲羟戊酸内酯的对映选择性合成。