The MeOH extract from the bark of Brachylaena hutchinsii yielded two ketoaldehyde sesquiterpenes, 8-ketocopaenal [1] and 8-ketoylangenal [2], which are also known as brachylaenalones A and B, respectively. In addition to the above-mentioned aldehydes, the corresponding ketoalcohols 8-ketocopaenol