FIG. 1.

Benzoxazinoids and their degradation products. The biologically inactive compounds DIMBOA-Glu and DIBOA-Glu reside in plants and are enzymatically converted by the plant to the fungitoxic aglucones DIMBOA and DIBOA. These compounds spontaneously degrade to the biologically active compounds MBOA and BOA. (Adapted from reference 32 with permission.)