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Your search keyword '"Dang, Kun"' showing total 6 results
Start Over Author "Dang, Kun" Topic ardisia
6 results on '"Dang, Kun"'

1. Two novel compounds from Ardisia punctata Lindl.

Author

Li C, Yue DK, Bu PB, and Sun YF

Subjects
Benzoquinones chemistry, Molecular Structure, Phenylacetates chemistry, Plant Roots chemistry, Plants, Medicinal chemistry, Ardisia chemistry, Benzoquinones isolation & purification, Phenylacetates isolation & purification
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.

Published
2007

2. Three new belamcandaquinones from Ardisia punctata.

Author

Li C, Yue DK, Bu PB, and Sun YF

Subjects
Benzoquinones chemistry, Molecular Conformation, Molecular Structure, Phenols chemistry, Plant Roots chemistry, Resorcinols chemistry, Ardisia chemistry, Benzoquinones isolation & purification, Phenols isolation & purification, Plants, Medicinal chemistry, Resorcinols isolation & purification
Abstract

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.

Published
2006

3. [Chemical constituents from roots of Ardisia punctata].

Author

Li C, Yue DK, Bu PB, and Sun YF

Subjects
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 & purification, Ardisia chemistry, Plants, Medicinal chemistry
Abstract

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.

Published
2006

4. Two novel compounds from Ardisia punctata Lindl

Author

Chun, Li, Dang-Kun, Yue, Peng-Bin, Bu, and You-Fu, Sun

Subjects
Plants, Medicinal, Molecular Structure, Benzoquinones, Plant Roots, Ardisia, Phenylacetates
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.

Published
2007

5. Three new belamcandaquinones from Ardisia punctata

Author

Chun, Li, Dang-kun, Yue, Peng-bin, Bu, and You-fu, Sun

Subjects
Plants, Medicinal, Molecular Structure, Phenols, Benzoquinones, Molecular Conformation, Resorcinols, Plant Roots, Ardisia
Abstract

To study the chemical constituents of Ardisia punctata.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.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).The three compounds are new 1,4-benzoquinone derivatives.

Published
2006

6. [Chemical constituents from roots of Ardisia punctata]

Author

Chun, Li, Dang-Kun, Yue, Peng-Bin, Bu, and You-Fu, Sun

Subjects
Plants, Medicinal, Benzoquinones, Oleanolic Acid, Saponins, Plant Roots, Ardisia, Triterpenes
Abstract

To study the chemical constituents from the roots of Ardisia punctata.Compounds were isolated by chromatographic techniques on silica gel and Rp-HPLC column. Their structures were elucidated by chemical and spectroscopic methods.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).All the compounds were obtained from this plant for the first time.

Published
2006

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