Synthesis of natural maleimides farinomaleins C–E and evaluation of their antifungal activity
作者:Santosh Lahore、Sachin T. Aiwale、Paola Sardi、Sabrina Dallavalle
DOI:10.1016/j.tetlet.2014.05.023
日期:2014.7
A practical and convenient synthesis of naturally occurring farinomaleins C-E was achieved starting from readily available ethyl 3-methyl-2-oxobutyrate and triethyl phosphonoacetate. The key steps of the sequence included a Horner-Wadsworth-Emmons condensation to obtain the precursor farinomalein A and coupling with suitable alcohols to install the chain. The synthesis of farinomalein D has been achieved starting from (R)-isopropylideneglycerol on the basis of which the S configuration was assigned to the natural compound. The antifungal activity of the synthesized compounds was evaluated against Cladosporium cladosporioides. (C) 2014 Elsevier Ltd. All rights reserved.