Wood Extractives

Part IX. A New Diterpene Alcohol from Cryptomeria japonica D. Don

Abstract

Phyllocladanol, a saturated tetracyclic diterpene alcohol present in the neutral portion of methanol extract from Cryptomeria japonica, is shown to readily dehydrate to phyllocladene, and the constitution (I) is proposed. Occurrence of a further compound, isophyllocladene, in steam-volatile material of the extract is described.