• 약학회지
• /
• 제38권4호
• /
• pp.469-475
• /
• 1994

As the continued studies for Korean cultivated rhubarb, MeOH extract of the leaves was fractionated with ether, ethylacetate, and n-butanol. From the ethyl acetate fraction of MeOH extract, one flavone glycoside, apigenin-8-${\beta}$-D-glucopyranoside(vitexin, $C_{21}H_{20}O_{10}$) and from the n-BuOH fraction of MeOH extract, two flavonol glycosids, kaempferol-3-O-(2,6-di-O-rhamnopyranosyl)-${\beta}$-D-galactopyranoside$(C_{33}H_{40}O_{19})$and quercetin-3-O-rutinoside(rutin, $C_{27}H_{30}O_{16}$) were isolated and identified through the physico-chemical properties and spectroscopic evidences(UV, IR, NMR, Mass) respectively.

• 약학회지
• /
• 제38권4호
• /
• pp.410-417
• /
• 1994

As one of the studies for Korean cultivated Rhubarb, which has been used stomachic bitter, laxative and purgative, etc, MeOH extract of the leaves was fractionated with ether, ethylacetate. From the ether fraction of MeOH extract, two anthraquinone derivatives, 1,6,8-trihydroxy-3-methyl anthraquinone(emodin, $C_{15}H_{10}O_5$), 1,6,8-trihydroxy-3-hydroxymethyl anthraquinone (citrerosein, $C_{15}H_{10}O_6$) and from the ethyl acetate fraction of MeOH extract, one anthraquinone derivative, emodin-8-${\beta}$-D-glucopyranoside$(C_{21}H_{20}O_{10})$ were isolated and identified through the physico-chemical properties and spectroscopic evidences(UV, IR, NMR, Mass), respectively.

• Natural Product Sciences
• /
• 제3권1호
• /
• pp.42-48
• /
• 1997

The roots of Tabernaemontana macrocarpa Jack (Apocynaceae) yielded nine indole alkaloids which were identified as coronaridine (2), voacangine hydroxy-indolenine (3), 3-oxo-coronaridine (4), 19-R-heyneanine (7), coronaridine pseudoindoxyl (8) and voacangine pseudoindoxyl (9) while 3-(2-oxopropyl)-coronaridine (1), 3-(2-oxopropyl)-coronaridine-pseudoindoxyl (5) and 3-(2-oxopropyl)-voacangine-pseudoindoxyl (6) were isolated as artefacts formed during the isolation process. All of the alkaloids were identified by spectroscopic methods $(UV,\;MS,\;^1H-NMR\;&\;^{13}C-NMR)$ and in comparison with the literature data.

• 생약학회지
• /
• 제25권4호통권99호
• /
• pp.336-341
• /
• 1994

For the investigation of medicinal resources in Aconitum species, the studies were carried out to search the less toxic constituents than Aconitum alkaloid in the aerial part of Aconitum jaluense for. album (Ranunculaceae). From the BuOH fraction of MeOH extract, three flavonoid compounds, hyperoside(1), $kaempferol-3-O-{\beta}-_D-galactopyranoside(2)$, $kaempferol-3-O-{\alpha}-_L-rhamnopyranosyl-(1{\rightarrow}6)-{\beta}-_D-glucopyranoside(3)$ were isolated and identified on the basis of their physico-chemical properties, spectroscopic evidences (UV, IR, NMR and Mass etc.) and comparison with authentics, respectively.

• 한국자기공명학회논문지
• /
• 제5권2호
• /
• pp.118-129
• /
• 2001

Binding interactions of cationic porphyrins, T4MPyP and TMAP with DNA oligomer d(CGCGAATTCGCG), were studied with NMR spectroscopy, W and CD spectroscopic method. Two porphyrins showed significant differences in NMR, UV and CD data upon binding to DNA. T4MPyP was considered to position more closely to DNA bases through partial intercalation as well as ionic intercalation between the positive charges of porphyrin and phosphate group of DNA at 5’-GC-3’steps. Contrast to this, TMAP was thought to bind to phosphate of DNA more or less outside of the groove.

• 한국염색가공학회지
• /
• 제30권1호
• /
• pp.1-8
• /
• 2018

In the present study, three morpholine substituted crystal violet lactone (CVL) have been synthesized to monitor the thermochromic property. This work is explaining the role of substituent on the lactone ring. The methyl substituents induced greater chromic effects than the chloro substituents. Furthermore, the three-component mixtures that contained CVL, bisphenol-A, and methyl stearate were used to analyse the thermochromic effect of the CVLs as bulk samples with various temperature. The thermochromic properties of the CVLs were evaluated using solid-state UV-Vis and FT-IR spectroscopic techniques. Finally, one of the synthesized CVL has been successfully converted into the form of a test paper similar to pH paper for use as thermal indicators.

• Natural Product Sciences
• /
• 제5권3호
• /
• pp.142-147
• /
• 1999

Tiliacora racemosa Colebr. belonging to the family Menispermaceae is the biggest store-house of diphenyl bisbenzylisoquinoline (DBBI) alkaloids. Exhaustive chemical processing of the root of T. racemosa by the application of modern separation techniques yielded a DBBI alkaloid which was identified as tiliacorine using sophisticated spectroscopic methods (UV, IR, $1^H-NMR$, Mass). Tiliacorine potentiated the sleeping time induced by standard hypnotics viz. chlorpromazine (CPZ), pentobarbitone (PB) and diazepam (DZ) in a dose dependent manner. Tiliacorine potentiated the analgesic action of standard analgesic agents viz., morphine and meperidine. It was also found to possess anti convulsive activity in the strychnine induced convulsion model.

• Natural Product Sciences
• /
• 제19권1호
• /
• pp.71-75
• /
• 2013

Actinofuranone C (1), a new 3-furanone-bearing polyketide, was isolated from an actinobacterium (Amycolatopsis sp.) associated with a female of the dung beetle, Copris tripartitus Waterhouse. The structure of actinofuranone C was elucidated by the spectroscopic interpretation of NMR, mass, UV, and IR data. The discovery of actinofuranone C indicates that chemical investigation of insect-associated microorganisms would be an effective strategy to explore natural chemical diversity.

• Food Science and Biotechnology
• /
• 제14권5호
• /
• pp.672-675
• /
• 2005

Two anthocyanins were isolated from 1% HCl-20% methanol extracts of KG 97287 black common bean (Phaseolus vulgaris L.) using semipreparative, high-performance liquid chromatography (HPLC). The anthocyanins were identified using a combination of LC/ES-mass spectrometry (MS) and spectroscopic methods of UV-Vis, $^1H-$ and $^{13}C-$ nuclear magnetic resonance (NMR). The chemical structures of these two anthocyanins were elucidated as delphinidin 3-glucoside and petunidin 3-glucoside and their contents in KG 97287 black common bean seed coats were determined to be $2.614{\pm}0.11$ and $0.167{\pm}0.01\;mg/g$, respectively. These contents were lower than reported internationally and we recommend the introduction into Korea of high anthocyanin varieties of black common bean.

• 생약학회지
• /
• 제26권2호
• /
• pp.109-115
• /
• 1995

The plant of Pedicularis resupinata L. var. oppositifolia (Scrophulariaceae) appeared to be used for the treatment of rheumatoid arthritis, malignant abscess (tumor), urolith, and diuretics in oriental medicinal literatures. Three different compounds were isolated from the aerial part of the plant and characterized by the spectroscopic (UV, IR, NMR, MS) analysis. These compounds were acteoside (compound I), suavissmoside R1 (compound II), and ${_D}-mannitol$ (compound III).