• The Korean Journal of Pesticide Science
• /
• v.6 no.1
• /
• pp.9-15
• /
• 2002

The insecticide constituents of several Celastraceae family plants including Celastrus angulatus, Celastrus orbiculatus, Celastrus flagellaris, Euonymus verrucosides, Euonymus forunei and Euonymus phellomana were studied by bioassay-guided fractionation. All structures of sesquiterpene polyol esters and alkaloids have been elucidated by UV, IR, MS, NMR and x-ray diffraction evidences. These compounds exhibited insecticidal, antifeedant and narcotic activities against Mythimna separata.

• Proceedings of the PSK Conference
• /
• 2001.04a
• /
• pp.206.3-207
• /
• 2001

• Bulletin of the Korean Chemical Society
• /
• v.29 no.10
• /
• pp.1998-2004
• /
• 2008

Two synthetic pathways to substituted hexahydroimidazo[1,2-a]pyridines, which may serve as precursors of aza-alkaloids, were investigated. The first involves the condensation of a bisnucleophilic enediaminoester and a biselectrophile. The second involves attachment to nitrogen of the carbon chain skeleton required to form the six-memberd ring, before formation of the enediaminoester. Several substituted hexahydroimidazo[1,2- a]pyridines were synthesized via these two approaches.

• Korean Journal of Pharmacognosy
• /
• v.19 no.3
• /
• pp.153-169
• /
• 1988

The combined use of the J-modulated selective INEPT and CSCM 1DNMR techniques is described for the structure elucidation of several new classes of compound including prionitin, the loureirins and larreantin, and for the regiosubstitution of the furanonaphthoquinones. Spectroscopic studies on the conformation of the cytotoxic agent savinin are also described, together with the NMR assignments and preliminary biosynthetic experiments on the antitumor antibiotic staurosporine.

• Korean Journal of Pharmacognosy
• /
• v.19 no.3
• /
• pp.177-180
• /
• 1988

A diterpene alkaloid and a disaccharide were isolated from root of Aconitum uchiyamai, and identified as mesaconitine and sucrose respectively by UV, IR, MS, and NMR data.

• Bulletin of the Korean Chemical Society
• /
• v.35 no.12
• /
• pp.3665-3667
• /
• 2014

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2006.04a
• /
• pp.494-495
• /
• 2006

• YAKHAK HOEJI
• /
• v.28 no.3
• /
• pp.185-190
• /
• 1984

Protothalipine colorless needle crystal, mp $195-6^{\circ}$, $C_{21}H_{25}NO_{5}$) and jatrorrhizine chloride (Base A, orange needle crystal, mp $198^{\circ}$) are identified by chemical, spectral analysis, and comparison with authentic sample. Base B (reddish crystal, mp $192-4^{\circ}$) might be a artifact substance, which was changed from the jatrorrhizine chloride. Base C (yellowish needle crystal, mp $228~230^{\circ}$) and Base D (reddish needle crystal, mp $211~213^{\circ}$) were assumed to be thalifendine chloride, desoxythalidastine chloride by phytochemical and spectral analysis respectively.

• Archives of Pharmacal Research
• /
• v.10 no.3
• /
• pp.197-199
• /
• 1987

Two alkaloids were isolated from an ether-soluble alkaloidal fraction of Panax ginseng. They were identified as 1-carbobutoxy-$\beta$-carboline and 1-carbomethoxy-$\beta$-carboline.

• Bulletin of the Korean Chemical Society
• /
• v.23 no.7
• /
• pp.998-1002
• /
• 2002

An efficient synthesis of 2H-pyrans is achieved by indium (III) chloride-catalyzed reactions of 1,3-dicarbonyl compounds with a variety of $\alpha\beta-unsaturated$, aldehydes in moderate yields. This method has been applied to the synthesis of pyranocoumar ins, pyranophenalenones, and pyranoquinolinone alkaloids.