Figure 1.
The structures of the four avenacins. Avenacin A-1: R1 = OH, R2 = NHCH3; avenacin A-2: R1 = OH, R2 = H; avenacin B-1: R1 = H, R2 =NHCH3; avenacin B-2: R1 = H, R2 = H; d-Glc = d-glucose; l-Ara = l-arabinose.
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