Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Masahiko Kurihara"'
Publikováno v:
Journal of Inorganic Biochemistry. 73:31-34
Complexation equilibria between Al(III) and (−)-epigallocathechin gallate (EGCG) in the presence of acetate buffer have been studied by spectrophotometry. The method is based on the competition between EGCG and buffer ligands for Al(III) ions. The
Publikováno v:
Bulletin of the Chemical Society of Japan. 79:294-296
Heptakis(2,6-di-O-methyl)-β-cyclodextrin (DM-β-CD), prepared by dissolution in either pure water or acetone and dried at 40 °C, showed a characteristic exothermic change in the range 160–185 °C. Si...
Autor:
Fumitoshi Hirayama, Masahiko Kurihara, Yasuhide Horiuchi, Tadanobu Utsuki, Kaneto Uekama, Masaki Yamasaki
Publikováno v:
Pharmaceutical Research. 10:208-213
Heptakis(2,6-di-O-ethyl)-β-cyclodextrin (DE-β-CyD) was prepared and its 1H and 13C nuclear magnetic resonance (NMR) signals in DMSO-d6 were unequivocally assigned by two-dimensional COSY and ROESY. The results on 1H coupling constants indicated tha
Publikováno v:
Journal of Inclusion Phenomena and Molecular Recognition in Chemistry. 8:363-373
Inclusion complexation of nocloprost, a potent antiulcer prostaglandin derivative, with α-, β-, and γ-cyclodextrins (CyDs) in aqueous solutions has been studied by the solubility method and13C-NMR spectroscopy. The steric requirement of host-guest
Publikováno v:
NIPPON KAGAKU KAISHI. :1195-1199
Publikováno v:
J. Chem. Soc., Chem. Commun.. :1578-1580
The ring-opening reaction of β-cyclodextrin was markedly decelerated by inclusion of guest molecules, as shown by 1H NMR and kinetics studies.
Publikováno v:
Chemical and Pharmaceutical Bulletin. 32:4237-4240
The effects of two methylated-β-cyclodextrins, heptakis (2, 6-di-O-methyl)-β-cyclodextrin (DM-β-CyD) and heptakis (2, 3, 6-tri-O-methyl)-β-cyclodextrin (TM-β-CyD), on the dehydration rate of prostaglandin E2 (PGE2) and the isomerization rate of
Publikováno v:
Chemical and Pharmaceutical Bulletin. 35:1049-1057
Pericyclic reactions of 3, 5-lutidine N-oxide with N-phenylmaleimides were investigated. The primary cycloadducts are thermally labile and undergo 1, 5-sigmatropic rearrangement to give the 2, 3-dihydropyridine derivatives. The proton nuclear magneti
Publikováno v:
International Journal of Pharmaceutics. 35:193-199
Effects of various methylated cyclodextrins on the hydrolysis rate of prostacyclin (PGI2) were investigated and compared with natural cyclodextrins (CyDs). All CyDs decelerated the hydrolysis of PGI2. Among them, heptakis (2.3-di-O-methyl)-β-cyclode
Publikováno v:
ChemInform. 18