A5079677129- Phytochemical Studies and Bioactivities
- Phytochemistry and Bioactive Compounds
- Synthesis and Reactions of Organic Compounds
- Phytochemistry and Biological Activities
- Analytical Chemistry and Chromatography
- Chromatography in Natural Products
- Phytochemical compounds biological activities
- Traditional and Medicinal Uses of Annonaceae
- Plant and fungal interactions
- Advanced Synthetic Organic Chemistry
- Bacterial Genetics and Biotechnology
- Antimicrobial Resistance in Staphylococcus
- Marine Sponges and Natural Products
- Natural product bioactivities and synthesis
- Fungal Biology and Applications
- RNA and protein synthesis mechanisms
Nagoya University
2023
Fukuoka University
1973-1992
From the seeds of Asclepias curassavica, two cardenolides and twelve glycosides were obtained. Among these, four compounds determined to be 16α-hydroxycalotropagenin, 16α-hydroxycalotropin its 3'-O-glucoside 3'-O-gentiobioside. Normally linked triosides corotoxigenin, coroglaucigenin 12β-hydroxycoroglaucigenin characterized as cellobiosyl-allomethylosides.
3'-epi-19-Norafraside, a 19-norcardenolide glycoside with dual linkages between cardenolide and 4, 6-dideoxy-galactos-2-ulose, 12β-hydroxycoroglausigenin were newly isolated from the stems of Asclepias curassavica, along known glycosides free cardenolides. The structures determined by spectral chemical methods.
Several proteins have been shown to undergo a shift in the mechanism of ligand binding-induced folding from conformational selection (CS; precedes binding) induced fit (IF; binding folding) with increasing concentration. In previous studies coupled folding/binding reaction staphylococcal nuclease (SNase) presence substrate analogue, adenosine-3′,5′-diphosphate (prAp), we found that two phosphate groups make important energetic contributions toward stabilizing its complex native protein as...
Five new strophanthidin glycosides, glucos-3-ulosyl-cymaroside, glucosyldigitalosyl-cymaroside, cellobiosyl-cymaroside, digitaloside, and glucosyl-digitaloside, were obtained from the roots of Apocynum venetum L. var. basikurumon HARA, along with free common glycosides in species, cymarin k-strophanthidin-β Strophanthidin glucoside was also obtained.
Three piscicidal pregnanes including two known defense substances of water beetles and four pregnane glycosides having the same aglycone as that teikaside A were isolated from roots Apocynum venetum L. var.basikurumon HARA their structures determined.
Anodendrosins J and K, two diesters of 4-O-glycosyl-3, 5-diprenyl-4-hydroxybenzoic acid with sucrose were obtained from the seeds Anodendron affine, their structures determined by spectral chemical means.