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4 results on '"Kolak U"'

1. Norditerpene alkaloids from Delphinium linearilobum and antioxidant activity.

Author

Kolak U, Oztürk M, Ozgökçe F, and Ulubelen A

Subjects
Alkaloids isolation & purification, Chelating Agents chemistry, Chelating Agents isolation & purification, Diterpenes isolation & purification, Free Radical Scavengers chemistry, Free Radical Scavengers isolation & purification, Iron chemistry, Magnetic Resonance Spectroscopy methods, Molecular Structure, Plant Roots chemistry, Plants, Medicinal chemistry, Alkaloids chemistry, Delphinium chemistry, Diterpenes chemistry
Abstract

From the roots of Delphinium linearilobum (Trautv.) N. Busch two new norditerpene alkaloids linearilobin and linearilin, and the known alkaloids lycoctonine, 14-acetyltalatizamine, browniine, cammaconine, talatizamine, and cochlearenine were isolated. Spectroscopic techniques were used for structure determination. Antioxidant activity was performed by DPPH and metal chelating activity assays.

Published
2006
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2. Two new diterpenoid alkaloids from Aconitum cochleare.

Author

Kolak U, Türkekul A, Ozgökçe F, and Ulubelen A

Subjects
Ethanol, Magnetic Resonance Spectroscopy, Plant Extracts chemistry, Solvents, Spectrophotometry, Infrared, Turkey, Aconitum chemistry, Alkaloids chemistry, Diterpenes chemistry
Abstract

Two new diterpenoid alkaloids, cochleareine (1) and acoleareine (2) together with the known alkaloids 14-acetyltalatisamine (3) and talatisamine (4) have been isolated from the aerial parts of Aconitum cochleare Woroschin growing wild in Eastern Turkey (Van).

Published
2005

3. Alkaloids and aromatics of Cyathobasis fruticulosa (Bunge) Aellen.

Author

Bahçeevli AK, Kurucu S, Kolak U, Topçu G, Adou E, and Kingston DG

Subjects
Alkaloids chemistry, Alkaloids pharmacology, Antifungal Agents chemistry, Antifungal Agents pharmacology, Antineoplastic Agents, Phytogenic chemistry, Antineoplastic Agents, Phytogenic pharmacology, Carbolines chemistry, Carbolines pharmacology, Ethylamines chemistry, Ethylamines pharmacology, Molecular Structure, Nuclear Magnetic Resonance, Biomolecular, Phenols chemistry, Phenols pharmacology, Tryptamines chemistry, Tryptamines pharmacology, Turkey, Alkaloids isolation & purification, Antifungal Agents isolation & purification, Antineoplastic Agents, Phytogenic isolation & purification, Carbolines isolation & purification, Chenopodiaceae chemistry, Ethylamines isolation & purification, Phenols isolation & purification, Plants, Medicinal chemistry, Tryptamines isolation & purification
Abstract

A beta-carboline-, a tryptamine-, and two phenylethylamine-derived alkaloids and three known aromatic compounds were isolated from the aerial parts and roots of Cyathobasis fruticulosa (Bunge) Aellen, and their structures were elucidated by spectroscopic techniques. The one new alkaloid, N-methyl-N-formyl-4-hydroxy-beta-phenylethylamine (1), showed marginal antifungal activity.

Published
2005
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4. Norditerpenoid alkaloids from the roots of Aconitum leave Royle.

Author

Ulubelen A, Meriçli AH, Meriçli F, Kolak U, Arfan M, Ahmad M, and Ahmad H

Subjects
Alkaloids isolation & purification, Alkaloids pharmacology, Indicators and Reagents, Magnetic Resonance Spectroscopy, Pakistan, Plant Roots chemistry, Spectrophotometry, Infrared, Spectrophotometry, Ultraviolet, Terpenes isolation & purification, Terpenes pharmacology, Alkaloids chemistry, Plants, Medicinal chemistry, Ranunculaceae chemistry, Terpenes chemistry
Abstract

From the roots of Aconitum leave Royle growing wild in Northern Pakistan, Swat district, three new alkaloids, 8-methyllycaconitine (1), 14-demethyllycaconitine (2), N-deethyllycaconitine-N-aldehyde (3) have been isolated along with four known compounds, lappaconitine (4), lycaconitine (5), lapaconidine (6) and lycoctonine (7).

Published
2002

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