RESUMO
Objective: To study the chemical constituents from the twigs and leaves of Fokienia hodginsii. Methods: The compounds were separated and purified by chromatography and their structures were determined by spectroscopic data. Results: Fourteen compounds were isolated from 95% ethanol extract of F. hodginsii and identified as savinin (1), gadain (2), dihydrosesamin (3), hinokinin (4), 7-oxohinokinin (5), puviatilol (6), umbelliferone (7), phytol (8), catechin (9), amentoflavone (10), quercetin-3-O-α-L-rhamnoside (11), salicyl alcohol (12), vanillin (13), and coniferaldehyde (14). Conclusion: Compounds 1-14 are isolated from this plant for the first time.
RESUMO
Objective: To investigate the chemical constituents in the dried whole plant of Lobelia chinensis. Methods: Column chromatography, such as silica gel, MCI, ODS, Sephadex LH-20, C18 reverse-phased silica gel columns, and preparative HPLC were used to isolate the compounds. Spectroscopic methods like MS, 1H-NMR, and 13C-NMR were used to elucidate their structures. Results: Fifteen compounds were isolated from 95% ethanol extract of L. chinensis, including twelve flavonoids: quercetin (1), rutin (2), luteolin (3), apigenin (4), hesperidin (5), quercetin-3-O-α-L-rhamnoside (6), quercetin-7-O-α-L-rhamnoside (7), quercetin-3- O-β-D-glucoside (8), amentoflavone (9), naringenin (10), hesperetin (11), and eupafolin (12), and three coumarins: 5, 7- dimethoxy-coumarin (13), isoscopoletin (14), and scoparone (15). Conclusion: Compounds 6-12 are isolated from the plants in genus Lobelia L. for the first time. Compounds 5, 13, and 14 are isolated from L. chinensis for the first time.
RESUMO
OBJECTIVE: To study the chemical constituents of the leaves of Lindera aggregata. METHODS: Various column chromatographic techniques were used to separate and purify the chemical constituents and their structures were elucidated by spectral analysis. RESULTS: Twelve compounds were isolated and identified as hydroxylindestrenolide (I), linderalactone (II), pseudone-olinderane(III), quercetin-3-O-α-L-rhamnoside(IV), kaempferol-3-O-α-L-arabinofuranoside(V), kaempferol-3-O-β-D-galactopyrano-side(VI), kaempferol-3-O-β-D-xylopyranoside (VII), quercetin-3-O-(2″-O-β-D-glucopyranosyl) -α-L-arabinofuranoside (VII), querce-tin-3-O-(2″-O-β-Z)-glucx)pyranosyl) -β-D-xylopyranoside(IX), syringoside (X), acantrifoside E(XI), 2,6-dimethoxy-4-hydroxyphenol-1-O-β-D-glucopyranoside(XII). CONCLUSION: The compounds VI-XII were isolated from Lindera genus for the first time.