Figure 1. Structures of colibactin and synthetic analogs.

a. Structures of colibactin 771 (1), 770 (2) and 742 (3a, 3b). b. Structures and activity of the left-hand fragment 4 and the right-hand fragment 5.

a. Structures of colibactin 771 (1), 770 (2) and 742 (3a, 3b). b. Structures and activity of the left-hand fragment 4 and the right-hand fragment 5.