Stereocontrolled total synthesis of (±)-norpatchoulenol and two metabolites of patchouli alcohol, (±)-hydroxy patchouli alcohol and the corresponding (±)-carboxylic acid
The first total synthesis of the two biooxidation products of patchoulialcohol (2), (±)-hydroxy patchoulialcohol (3) and the corresponding (±)-carboxylic acid 4, has been achieved in highly stereoconcrolled manners. Synthesis of (±)-norpatchoulenol (1), the real odoriferous substance of patchouli oil, has been accomplished by the biogenetic route via (±)-3 and (±)-4.