Five new cis-himachalane-type sesquiterpenes from the heartwood of Juniperus chinensis var. tsukusiensis

Abstract

The following constituents were isolated from the heartwood of Juniperus chinensis vat. tsukusiensis: ar-himachalene (1), 2-himachalen-6-ol (2), 3- himachalen-6-ol (3), 2α,6α-epoxy-3-himachalene (4), 2α,6α- epoxyhimachalan-3β-ol (5), and chinensiol (6). Compounds 2-6 are new cis- himachalane-type sesquiterpenes, and their structures were elucidated on the basis of spectral and chemical evidence. Himachalane-type sesquiterpenes were isolated for the first time in Juniperus species.