Chemical constituents from the stems of Cinnamomum insulari-montanum

Abstract

547.972Cinnamomum insulari-montanum Hayata (Lauraceae) is an endemic tree that grows in Taiwancs natural hardwood forest at elevations between 400 and 1500 m [1]. In the course of screening for biologically and chemically novel agents from Formosan Lauraceous plants [2][3][4][5][6][7][8][9][10][11][12][13][14][15], C. insulari-montanum Hayata was chosen for further phytochemical investigation. In this paper, we reinvestigated the constituents in the stems of C. insulari-montanum Hayata [16][17][18][19][20][21]. The MeOH extract of its stems was subjected to solvent partitioning and chromatographic separation to afford eight pure substances. The chemical constituents in the stems of C. insulari-montanum Hayata were separated with column chromatography. Seven compounds, including a mixture of E-sitosterol (1) and stigmasterol (2) [22], coumarin (3) [14], cinnamyl alcohol (4) [14], cinnamic acid (5) [14], p-hydroxybenzoic acid (6) [14], kaempferol (7) [15], and kaempferitrin (8) [15], were isolated from the stems of C. insulari-montanum Hayata. All of these compounds were found for the first time in this plant.

Anti-Inflammatory Activities of Constituents from Cinnamomum insularimontanum Hayata Leaves and Their Mechanisms

“…The main components of the essential oil of C. insularimontanum fruits are citral (35.89%), citronellal (24.64%), citronellol (16.78%), α-pinene (9.45%), β-pinene (4.30%), limonene (1.76%), and camphene (1.70%) [ 8 ]. It is known that the methanol extract of the C. insularimontanum stem has β-sitosterol, stigmasterol, coumarin, cinnamyl alcohol, cinnamic acid, p-hydroxybenzoic acid, kaempferol, and kaempferitrin [ 9 ]; the methanol extract of leaves has compounds such as obtusilactone A, isoobtusilactone A, (+)-sesamin, (+)-diasesamin, (+)-episesamin, β-sitostenone, β-sitosterol, cinnamic acid, and eugenol [ 10 ]. C. insularimontanum has been reported to have some biological activities.…”

Chemical constituents from the roots of Cinnamomum reticulatum

“…The chemical constituents and biological activity of the roots of this plant have not yet been reported [1,2]. There are only two papers describing the constituents of leaves of Cinnamomum reticulatum Hayata [1,2].…”

“…The chemical constituents and biological activity of the roots of this plant have not yet been reported [1,2]. There are only two papers describing the constituents of leaves of Cinnamomum reticulatum Hayata [1,2]. In the course of screening for biologically and chemically novel agents from Formosan Lauraceous plants [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], the roots of C. reticulatum were chosen for further phytochemical investigation.…”