Cyclohexyl(6-methyl-4,8-dioxo-1,3,6,2-dioxazaborocan-2-yl)acetaldehyde

This boronic acid derivative is in a series of the first known stable α-boryl aldehyde species. Through the employment of the MIDA-protected boronic ester, this building block has been shown as a precursor to the synthesis of unnatural amino acids.