The present invention relates to a new bacterial strain and a new urolithin named urolithin G. The new strain of the invention is Enterocloster bolteae CEBAS S4A9 DSM 34392 and can customize urolithin production to mimic metabotype A and metabotype B in vitro and in vivo if combined with at least one bacterial strain belonging to the Gordonibacter and/or Ellagibacter and/or Slackia genera. The invention also refers to methods or uses of E. bolteae CEBAS S4A9 DSM 34392 or the consortium that comprises E. bolteae CEBAS S4A9 DSM 34392 and at least one bacterial strain belonging to the Gordonibacter and/or Ellagibacter and/or Slackia genera for producing urolithins. The invention also refers to compositions or food products that contain E. bolteae CEBAS S4A9 DSM 34392, the aforementioned consortium, or the new urolithin G.

A heteroaryl-thio-substituted pyrone compound that is a heteroaryl-thio-substituted pyrone or a heteroaryl-thio-substituted coumarin. In various embodiments, the heteroaryl-thio-substituted pyrone compound or a reaction product thereof is a metal corrosion inhibitor.