ABSTRACT
Objective: To investigate the chemical constituents from Artemisiae Anomalae Herba (the aerial part of Artemisia anomala or A. actiflora). Methods: The chemical constituents from Artemisiae Anomalae Herba were isolated and purified by chromatography on silica gel and Sephadex LH-20 column, as well as preparative HPLC. Their structures were identified on the base of physicochemical properties and spectroscopic data analyses. Results: Fifteen constituents, including seven steroids and eight flavonoids, were isolated and identified as β-sitosterol (1), β-daucosterol (2), schleicheol 2 (3), α-spinasterol (4), 5α, 8α-epidioxy- ergosta-6, 22-dien-3β-ol (5), 5α, 8α-epidioxy-ergosta-6, 9(11), 22- trien-3β-ol (6), 22E-3β, 5α-dihydroxyergosta-7, 22-dien-6-one (7), naringenin (8), luteolin (9), kaempferol (10), chrysoeriol (11), diosmetin (12), jaceosidin (13), isorhamnetin 3-O-glucoside (14), and hesperetin-7-O-β-D-glucopyranoside (15). Conclusion: Compounds 5, 6, 12-14 are isolated from this plant for the first time, compound 3 is isolated from the plants of Artemisia L. for the first time, and compounds 7 and 15 are isolated from the plants in Compositae family for the first time.
ABSTRACT
Objective: To study the chemical constituents from Mentha haplocalyx. Methods: Compounds were isolated and purified by various chromatographic techniques, and their structures were identified by spectral analysis. Results: Eleven compounds were isolated and identified, including menthalignin (1), 5-hydroxy-6, 7, 8, 4'-tetramethoxyflavone (2), betulinic acid (3), hesperetin 7-O-β-D-glucopyranoside (4), gentisic acid 5-O-β-D-(6'-salicylyl)-glucopyranoside (5), linarin (6), acatin (7), 5-hydroxy-6, 7, 8, 3', 4'-pentamethoxyflavone (8), 5, 6, 4'-trihydroxy-7, 8-dimethoxyflavone (9), tilianin (10), and agastachoside (11). Conclusion: Compound 1 is a new lignan named menthalignan; compound 2 is a new natural product; compound 4 is isolated from the plants in Labiatae for the first time, and compounds 3 and 5 are firstly reported in the plants of Mentha L.