[Synthesis of pyrolysis products of bisdehydrodihydroennein. I. Synthesis of 6-hydroxy-7-methylphthalide and 2-hydroxymethyl-6,6-dimethyl-5-oxo-1-cyclohexenecarboxylic acid lactone].
D004952:Esters; D007783:Lactones / Q000138:chemical synthesis*
D004952:Esters; D007783:Lactones