Catalytic enantioselective synthesis of macrolides via asymmetric alkylation
摘要:
Catalytic enantioselective syntheses of the macrolides (R)-(-) phoracantholide and (R)-(+) lasiodiplodin have been achieved. Stereochemistry was introduced in using an arene chromium tricarbonyl derived catalyst, which mediated the enantioselective addition of dimethyl zinc to a functionalized aldehyde. (C) 1997 Elsevier Science Ltd.
Catalytic enantioselective macrolide synthesis II: Use of differential deprotection protocols
摘要:
Catalytic enantioselective synthesis of Phorcantholide I has been achieved. Key stereochemistry was introduced using a chiral arene chromium tricarbonyl based catalyst to mediate the addition of dimethyl zinc to a functionalised aldehyde. During the synthesis, a method for the Selective deprotection of the trityloxy group was revealed and developed.