ABSTRACT
To study the chemical constituents of Ardisia punctata, compounds were isolated with a combination of multi-chromatography. Their structures were determined on the basis of spectral analysis and comparison to those of the known compounds. A 1,4-benzoquinone derivative and a alkylphenol were isolated from the petroleum ether extract of the roots of Ardisia punctata. Their structures were elucidated as 2-tridecyl-3-[(2-tridecyl-4-acetoxy-6-methoxy)-phenoxyl] -6-methoxy-1,4-benzoquinone (1) and 2-methoxy-4-hydroxy-6-tridecyl-phenyl acetate (2). The two compounds are both new.
Subject(s)
Ardisia/chemistry , Benzoquinones/isolation & purification , Phenylacetates/isolation & purification , Benzoquinones/chemistry , Molecular Structure , Phenylacetates/chemistry , Plant Roots/chemistry , Plants, Medicinal/chemistryABSTRACT
AIM: To study the chemical constituents of Ardisia punctata. METHODS: Compounds were separated with a combination of multi-chromatography. Their chemical structures were determined on the basis of spectral analysis and single crystal X-ray diffraction. RESULTS: Three compounds were isolated from chloroform extract of the roots of Ardisia punctata. Their structures were elucidated as 2-tridecyl-3-[(2-tridecyl-3-acetoxy-4-methoxy-6-hydroxy) -phenyl]-6-methoxy-1, 4-benzoquinone (1), 2-tridecyl-3-[(2-tridecyl-4,6-dihydroxy) -phenyl]-6-methoxy-1,4-benzoquinone (2) and 2-tridecyl-3-[(2-pentadecyl-4,6-dihydroxyl) -phenyl]-6-methoxy-,4-benzoquinone (3). CONCLUSION: The three compounds are new 1,4-benzoquinone derivatives.
Subject(s)
Ardisia/chemistry , Benzoquinones/isolation & purification , Phenols/isolation & purification , Plants, Medicinal/chemistry , Resorcinols/isolation & purification , Benzoquinones/chemistry , Molecular Conformation , Molecular Structure , Phenols/chemistry , Plant Roots/chemistry , Resorcinols/chemistryABSTRACT
OBJECTIVE: To study the chemical constituents from the roots of Ardisia punctata. METHOD: Compounds were isolated by chromatographic techniques on silica gel and Rp-HPLC column. Their structures were elucidated by chemical and spectroscopic methods. RESULT: Twelve compounds were identified as 3-hydroxy-5-tridecyl-methyl phenyl ether (1), 5-pentadecyl-1, 3-benzenediol (2), 2-methoxy-6-tridecyl-1, 4-benzoquinone (3), 2-methoxy-6-pentadecyl-1, 4-benzoquinone (4), glutinol (5), ardisicrenoside A (6), ardisiacrispin B (7), 24-ethyl-5a-cholesta-7, 22(E)-dien-3-one (8), 24-ethyl-5alpha-cholesta-7, 22(E)-dien-3beta-ol (9), daucosterol (10), vanillin acid (11), tetratriacontanoic acid (12). CONCLUSION: All the compounds were obtained from this plant for the first time.
Subject(s)
Ardisia/chemistry , Plants, Medicinal/chemistry , Benzoquinones/chemistry , Benzoquinones/isolation & purification , Oleanolic Acid/analogs & derivatives , Oleanolic Acid/chemistry , Oleanolic Acid/isolation & purification , Plant Roots/chemistry , Saponins/chemistry , Saponins/isolation & purification , Triterpenes/chemistry , Triterpenes/isolation & purificationABSTRACT
OBJECTIVE: To establish a method of the quantitative determination of acetylharpagide in Ajuga decumbens. METHOD: The chromatographic conditions were as follows: a Phenomenex Luna C18 column was used, the mobile phase was composed of acetontrile-water (15:85), the flow rate was 1.0 mL x min(-1) and the UV absorbance detection was set at 197 nm. RESULT: Linearity of acetylharpagide was in the range of 0.6-3.6 microg (r = 0.9993), and the average recovery and RSD were 99.13% and 2.48%, respectively. CONCLUSION: The contents of acetylharpagide ranged 0.40%-6.39% in A. decumbens. The method was simple, accurate and sensitive.
Subject(s)
Ajuga/chemistry , Drugs, Chinese Herbal/analysis , Plants, Medicinal/chemistry , Pyrans/analysis , Chromatography, High Pressure Liquid/methods , Reproducibility of Results , Sensitivity and SpecificityABSTRACT
OBJECTIVE: To study the chemical constituents from the roots of Ficus hirta. METHOD: Compounds were isolated by chromatographic techniques on silica gel and HP-20 resin columns. Their structures were elucidated by chemical and spectroscopic methods. RESULT: Ten compounds were identified as beta-sitosterol (1), stigmasterol (2), psoralene (3), 3beta-hydroxy-stigmast-5-en-7-one (4), 5-hydroxy-4', 6, 7, 8-tetramethoxy flavone (5), 4', 5, 6, 7, 8-pentamethoxy flavone (6), 4', 5, 7-trihydroxy-flavone (7), 3beta-acetoxy-beta-amyrin (8), 3beta-acetoxy-alpha-amyrin (9) and hesperidin (10). CONCLUSION: The compounds 4, 5, 6 were obtained from this genus for the first time, and all the compounds were obtained from this plant for the first time.
