“…With 23 structures reported, Picea jezoensis (Jezo or Yeddo spruce, Picea ajanensis) displays the greatest diversity of methoxy-serratenes of all plants studied (Chernenko et al, 1990;1992a;Tanaka et al, 1994Tanaka et al, , 1995Tanaka et al, , 1996Tanaka et al, , 1997Tanaka et al, , 1998Tanaka et al, , 1999a, 2002Doi et al, 2010). This species was reported to produce a large compound spectrum, from methoxyserratenones (1, 4, 5), their 29-nor equivalents and methoxy-serratenedione (12), methoxyserratenols (9, 10) and methoxy-serratenediols, methoxy-hydroxy-serratenone, methoxyhydroxy-serratenals, methoxy-epoxy-serratenones and methoxy-epoxy-serratenols.…”