METHOD OF PREPARATION OF PILOCARPINES AND INTERMEDIATES THEREOF

摘要

2101445 9214693 PCTABS00015 Synthesis of (+)-pilocarpine is achieved via homochiral monoprotected propane-1,3-diols prepared in > 98 % e.e. by enzyme catalyzed acylation of the corresponding diol, and lactones derived therefrom, or via acetylenic alcohols which upon imidazolisation and catalysed carbonylation are converted to lactones again leading to pilocarpine and analogues thereof.