title: Hitorins A and B, Hexacyclic C25Terpenoids from Chloranthus japonicus.
abstract: Two novel C25terpenoids with a 6/5/5/5/5/3 hexacyclic skeleton including one γ-lactone ring and two tetrahydrofuran rings, hitorins A (1) and B (2), were isolated from the aerial parts of Chloranthus japonicus. The structures of 1 and 2 were elucidated on the basis of spectroscopic analyses as well as TDDFT ECD calculations. Hitorins A (1) and B (2) might be biogenetically derived from eudesmane sesquiterpene and thujane monoterpene.
authors.affiliation: Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido , Tobetsu 061-0293, Japan.
authors.forename: Sang-Yong
authors.initials: SY
authors.lastname: Kim
authors.affiliation: Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido , Tobetsu 061-0293, Japan.
authors.forename: Hisako
authors.initials: H
authors.lastname: Nagashima
authors.affiliation: Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan.|Graduate School of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812, Japan.
authors.forename: Naonobu
authors.initials: N
authors.lastname: Tanaka
authors.affiliation: Graduate School of Pharmaceutical Sciences, Tokushima University , Tokushima 770-8505, Japan.
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Kashiwada
authors.affiliation: Graduate School of Pharmaceutical Sciences, Hokkaido University , Sapporo 060-0812, Japan.
authors.forename: Jun'ichi
authors.initials: J
authors.lastname: Kobayashi
authors.affiliation: Faculty of Pharmaceutical Sciences, Health Sciences University of Hokkaido , Tobetsu 061-0293, Japan.
authors.forename: Mareshige
authors.initials: M
authors.lastname: Kojoma