1.Obesity and PPARdelta.
Hoosang HWANG ; Seokho KIM ; Heonjoong KANG
Journal of Korean Society of Endocrinology 2004;19(3):250-255
No abstract available.
Obesity*
;
PPAR delta*
2.Current Understanding of Peroxisome Proliferator-Activated Receptor delta.
Jungyeob HAM ; Dong Hwan WON ; Heonjoong KANG
Journal of Korean Society of Endocrinology 2003;18(3):239-249
No abstract available.
Peroxisomes*
;
PPAR delta*
3.Two New Scalaranes from a Korean Marine Sponge Spongia sp..
Inho YANG ; Sang Jip NAM ; Heonjoong KANG
Natural Product Sciences 2015;21(4):289-292
Intensive chemical investigation of Korean marine sponge Spongia sp. has led to the isolation of two new scalaranes. The planar structures of the new compounds 1 and 2 were determined through 1D and 2D NMR spectral data analysis, while the relative stereochemistry of the compounds was determined based on the analysis of 1H-1H coupling constants and NOESY spectroscopic data. Compounds 1 and 2 did not display any significant biological activities on farnesoid X-activated receptor (FXR) in co-transfection assay.
Porifera*
;
Statistics as Topic
4.A Novel Bromoindole Alkaloid from a Korean Colonial Tunicate Didemnum sp..
Dongyup HAHN ; Geum Jin KIM ; Hyukjae CHOI ; Heonjoong KANG
Natural Product Sciences 2015;21(4):278-281
Chemical investigation on a colonial marine tunicate, Didemnum sp. led to the isolation of a series of indole alkaloids including a new (1) and two known metabolites (2-3). Based on the spectroscopic analysis including 1D and 2D NMR along with MS spectra, the structure of 1 (16-epi-18-acetyl herdmanine D) was elucidated as a new amino acid derivative. The absolute configuration of 1 was determined by comparison of specific rotation with the known compound. The structures of compounds 2 and 3 were also identified as bromoindole containing compounds N-(6-bromo-1H-indole-3-carbonyl)-L-arginine and (6-bromo-1H-indol-3-yl) oxoacetamide, respectively, based on 1H and 13C NMR data, MS data and specific rotation value. Their pharmacological potentials as antibacterial agents and FXR antagonists were investigated, but no significant activity was found. However, the structural similarity of compound 1 to compound 4 suggested the antiinflammatory potential of compound 1.
Anti-Bacterial Agents
;
Indole Alkaloids
;
Urochordata*