Synthesis of oxygenated cineole derivatives from cineole: utility of cytochrome P450cin as an enantioselective catalyst
摘要:
The oxidation of cineole to (1R)-6 beta-hydroxycineole by cytochrome P450(cin) (CYP176A) is utilised as the initial step in the synthesis of a range of compounds, both novel and ones previously known only as race-mates. The potential of P450(cin) to provide useful, enantiopure building blocks is thus demonstrated. In particular, hydroxylation by this enzyme was used as the initial step in the synthesis of a range of functionalised cineole derivatives that could be used as mechanistic probes to elucidate the effect of substrate structure on the transformations mediated by P450(cin). (C) 2013 Elsevier Ltd. All rights reserved.