描述
Sinapaldehyde, also known as (E)-3-(4-hydroxy-3,5-dimethoxyphenyl)-2-propenal or (E)-sinapoyl aldehyde, is a member of the class of compounds known as methoxyphenols. Methoxyphenols are compounds containing a methoxy group attached to the benzene ring of a phenol moiety. Sinapaldehyde is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Sinapaldehyde can be synthesized from cinnamaldehyde. Sinapaldehyde can also be synthesized into 4-acetoxy-3,5-dimethoxy-trans-cinnamaldehyde. Sinapaldehyde can be found in a number of food items such as angelica, saskatoon berry, rubus (blackberry, raspberry), and lemon verbena, which makes sinapaldehyde a potential biomarker for the consumption of these food products. In Arabidopsis thaliana, this compound is part of the lignin biosynthesis pathway. The enzyme dihydroflavonol 4-reductase uses sinapaldehyde and NADPH to produce sinapyl alcohol and NADP+ .