translate English to French: 4-Vinylguaiacol was further metabolized to vanillin, vanillic acid, and protocatechuic acid, followed by ortho cleavage of the aromatic ring.
Le 4-vinylguaiacol est métabolisé en vanilline, en acide vanillique et en acide protocatéchuique, lequel subit un clivage ortho du noyau aromatique.