• 대한약학회:학술대회논문집
• /
• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
• /
• pp.65.1-65.1
• /
• 2003

Natural benzo[c]phenanthridine and protoberberine alkaloids which have been attractive to synthetic organic chemists and biochemists over the last 2 decades since such compounds have shown interesting biological properties such as antitumor, antiviral and antimicrobacterial activities. For the systematic research on these alkaloids, several total syntheses of these alkaloids have been reported. However, the bulk of reported benzo[c]phenanthridine synthetic studies to date have involved multistep sequences for assembly of the target molecules as well as lack of generality for synthesizing substituted molecules. (omitted)

• Bulletin of the Korean Chemical Society
• /
• 제32권10호
• /
• pp.3597-3602
• /
• 2011

A simple and rapid analytical method was developed for the determination of eight isoquinoline alkaloids in Corydalis species. Eight isoquinoline alkaloids, including 2 aporphine alkaloids (isocorydine and glaucine) and 6 protoberberine alkaloids (coptisine, palmatine, berberine, canadine, corydaline, and tetrahydrocoptisine) were used as chemical markers which have a various biological activity and determined for quality control of Corydalis (C.) species (C. ternata, C. yanhusuo, and C. decumbens). To evaluate the quality of these herbal medicines, LC chromatographic separation of alkaloids were preferentially investigated on reversed-phase C18 column with pH variation and composition of mobile phase. In addition, the separation of these alkaloids in herbal extracts was found to be significantly affected on mobile phase composition using gradient elution. Especially for C. yanhusuo extract, berberine was seriously interfered with other alkaloid extracted from sample matrix when mobile phase composition was not optimized. As results, these compounds were successfully separated within 28 min using 10 mM ammonium acetate containing 0.2% triethylamine (adjusted at pH 5.0) as a mobile phase with gradient elution. On the basis of optimized HPLC conditions, 23 different Corydalis species samples were analyzed for the determination of alkaloid levels. In addition, principal component analysis (PCA) combined with the chromatographic data could be successfully classified the different geographic origin samples.

• 고려인삼학회:학술대회논문집
• /
• 고려인삼학회 1987년도 Proceedings of Korea-Japan Panax Ginseng Symposium 1987 Seoul Korea
• /
• pp.75-80
• /
• 1987

Over twelve alkaloids were detected in the ether-soluble alkaloid fraction of Panax ginseng roots. Among them, three alkaloids were identified as N9-formylharman, ethyl $\beta$-carboline-1-carboxylate and perlolyrine on the basis of chemical and spectroscopic studies. And also spinacine was isolated from the water-soluble fraction of the roots.

• 생약학회지
• /
• 제30권1호
• /
• pp.54-58
• /
• 1999

A method using coloric and spectrophotometric detection have been developed for the identification of the tertiary or quaternary alkaloids contained in Corydalis tuber and its preparations. The principle is based on the formation or decomposition of complex compounds. The complex compound of the tertiary and quaternary alkaloids have been formed by adding tetrathiocyanatocobaltate [II] ion to the test soln. Diverse crude drugs were screened using this method and the results indicated that isoquinoline, aconitine-type alkaloids in crude drugs can be readily detected. The method is simple, convenient, reproducible and applicable to the verification of the crude drug Corydalis tuber and its preparations.

• 생약학회지
• /
• 제2권1호
• /
• pp.35-37
• /
• 1971

In oriental drug therapy it has been considered by experience that the intoxication of alkaloids may be controlled by some drugs, and this was not based on scientific evidence. These drugs would contain saponins, as saponins are widely distributed in many vegetable drugs and, therefore, the present experiment was undertaken to find out if effects of saponin on the extracting process of aconite alkaloids could decrease the amount of the alkaloids. The data obtained in the extractions using various concentrations of saponin solution, show a decrease in alkaloid extract, suggesting that saponin forms a less soluble complex with the alkaloids or acts as a detergent.

• Natural Product Sciences
• /
• 제5권4호
• /
• pp.159-161
• /
• 1999

The effects of bioactive fractions containing protoberberine alkaloids from Coptis japonica on monoamine oxidase (MAO) activity were investigated. The MAO was obtained from the mitochondrial fraction of mouse brain. The butanol fraction from Coptis japonica was fractionated into separate bioactive fraction (Fr I-IV) by silica gel column chromatography. MAO activity was strongly inhibited by Fr III and IV, which mainly contain protoberberine alkaloids such as berberine, palmatine and coptisine. These results indicated that the protoberberine alkaloids from Coptis japonica had an inhibitory effect on MAO activity.

• Natural Product Sciences
• /
• 제4권4호
• /
• pp.257-262
• /
• 1998

The extract of the aerial parts of Fumaria bastardii Bor. afforded 12 alkaloids belonging to the skeletally six different groups of the isoquinoline alkaloids. In this publication, the isolation and identification of protopine (1), corydaldine (2), oxyhydrastinine (3), (-)-fumaritine (4), (+)-fumariline (5), (-)-O-methylfumarophycine (12), (+)-bicuculline (10), $(-)-{\beta}-hydrastine$ (7), (-)-corlumine (11), (+)-tetrahydropalmatine (8), (-)-stylopine (6), and (+)-juziphine (9) are described. Their structures have been determined by using extensive spectroscopic techniques. This is the first report of the occurrence of these alkaloids in Fumaria bastardii of Turkish origin.

• Mass Spectrometry Letters
• /
• 제7권2호
• /
• pp.45-49
• /
• 2016

An UHPLC-ESI-qTOF-MS analytical method was developed for cyclopeptide alkaloids in the seeds of Ziziphus jujuba var. spinosa (Semen Ziziphi Spinosae), which is a commonly used herb in Chinese and Korean traditional medicines. Considering the basicity of cyclopeptide alkaloids, a specific separation method was developed for an UHPLC system. The compounds were detected by DAD and ESI-qTOF-MS, and their fragmentation patterns were also acquired by MS^E technologies. Peak-picking of major compounds was performed with nine previously isolated compounds and two reference standard compounds. Tandem MS fragmentation behaviors of type-Ia and -Ib cyclopeptide alkaloids were investigated with the acquired data to develop a strategy for dereplication of other cyclopeptide alkaloid compounds in Z. jujuba var. spinosa. Two more cyclopeptide alkaloids were tentatively identified with UHPLC-ESI-qTOF-MS using this method.

• Archives of Pharmacal Research
• /
• 제28권6호
• /
• pp.675-679
• /
• 2005

Eight furoquinoline alkaloids were purified from two plants belonging to the Rutaceae family. Kokusaginine. skimmianine, evolitrine, and confusameline were purified from Melicope confusa, and haplopine, robustine, dictamine, and $\gamma$-fagarine from Dictamnus albus. In this study, the eight furoquinoline alkaloids were examined for inhibitory potency against human phos-phodiesterase 5 (hPDE5A) in vitro. DNA encoding the catalytic domain of human PDE5A was amplified from the mRNA of T24 cells by RT-PCR and was fused to GST in an expression vector. GST-tagged PDE5A was then purified by glutathione affinity chromatography and used in inhibition assays. Of the eight alkaloids, $\gamma$-fagarine was the most potent inhibitor of PDE5A, and its single methoxy group at the C-8 position was shown to be critical for inhibitory activity. These results clearly illustrate the relationship between PDE5A inhibition and the methoxy group position in furoquinoline alkaloids.

• 분석과학
• /
• 제12권3호
• /
• pp.243-247
• /
• 1999

HCl 산성에서 aconitine류 알칼로이드는 Reineke 시액으로 백색의 침전을, 그리고 TCR 시액으로 청색의 침전을 형성하였다. 백색의 침전은 $NH_4OH$ 알칼리성의 물에 녹아 aconitine류 알칼로이드를 유리시키며, 유리된 aconitine류 알칼로이드는 DCE층으로 쉽게 전용되었다. 전용된 DCE층을 분취하여 UV흡광파장을 측정하고 TLC로 분리하였다. 청색의 침전은 DCE층에 전용되므로 전용된 DCE층을 분취하여 UV/Vis.흡광파장을 측정하였다. 이상의 방법으로 aconitine류 알칼로이드를 검출하여 생약이나 제제에서 aconitine류 알칼로이드를 함유한 부자류 생약을 확인할 수 있었다.