| Chemical Structure | Parent compounds name | Reaction name | Genus | Species | Reference |
|---|---|---|---|---|---|
 | Phenylalanine | Cleavage | Gut microbiota | Gut microbiota | 10.1111/bph.14366 |
 | Tyrosine | Cleavage | Gut microbiota | Gut microbiota | 10.1111/bph.14366 |
 | p-cresol glucuronide | Deglucuronidation | Gut microbiota | Gut microbiota | 10.1080/21688370.2022.2073175 |
