title: Tetracyclic triterpenes and other constituents from the leaves and bark of Larix kaempferi.
abstract: Two new triterpenes were isolated from the leaves of Larix kaempferi together with two known compounds, 24-methylenecycloartanone and 24-methylenecycloartanol. A new triterpene-triol, nine known compounds, n-alkyl trans-ferulates and trans-p-coumarates, rheosmin, five stigmastanes and friedelin were isolated from the stem bark. These new compounds were characterized as cycloartan-3,24-dione, 24-methylenecycloartan-3alpha-ol and lanost-9(11)-en-3alpha,24S,25-triol on the basis of chemical and spectroscopic evidence.
authors.affiliation: Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara Takatsuki, 569-1094, Osaka, Japan
authors.forename: Hironori
authors.initials: H
authors.lastname: Ohtsu
authors.forename: Reiko
authors.initials: R
authors.lastname: Tanaka
authors.forename: Takashi
authors.initials: T
authors.lastname: Michida
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Shingu
authors.forename: Shunyo
authors.initials: S
authors.lastname: Matsunaga