RESUMEN
Supercritical fluid chromatography (SFC) has unique separative characteristics distinguished from those of HPLC and gas chromatography. At present, SFC is widely used and there are many applications in various biological, medical, and pharmaceutical fields. In this review, we focus on recently developed novel techniques related to SFC separation including: new column stationary phases, microfluidics, two-dimensional separation, and gas-liquid separation. In addition, we discuss the application of SFC using a water-containing modifier to biological molecules such as amino acids, peptides, and small proteins that had been challenging analytes.
Asunto(s)
Aminoácidos/aislamiento & purificación , Péptidos/aislamiento & purificación , Proteínas/aislamiento & purificación , Aminoácidos/química , Cromatografía con Fluido Supercrítico , Péptidos/química , Proteínas/químicaRESUMEN
Over the past twenty years, our research group has been studying the chemical constituents of mushrooms. From nineteen species, namely, Amanita virgineoides Bas (Amanitaceae), Daedaleopsis tricolor (Bull.: Fr.) Bond. et Sing. (Polyporaceae), Grifolafrondosa (Fr.) S. F. Gray (Polyporaceae), Hericium erinaceum (Bull.: Fr.) Pers. (Hericiaceae), Hypsizigus marmoreus (Peck) Bigelow (Tricholomataceae), Lactarius piperatus (Scop.: Fr.) S. F. Gray (Russulaceae), Lentinula edodes (Berk.) Sing. (Pleurotaceae), Lyophyllyum connatum (Schum.: Fr.) Sing. (Tricholomataceae), Naematoloma sublateritium (Fr.) Karst. (Strophariaceae), Ompharia lapidescens Schroeter (Polyporaceae), Panellus serotinus (Pers.: Fr.) Kuhn. (Tricholomataceae), Pholiota nameko (T. Ito) S. Ito et Imai in Imai (Strophariaceae), Pleurotus eringii (DC.: Fr.) Quel. (Pleurotaceae), Polyporus umbellatus Fries (Polyporaceae), Russula delica Fr. (Russulaceae), Russula sanguinea (Bull.) Fr. (Russulaceae), Sarcodon aspratus (Berk.) S. Ito (Thelephoraceae), Tricholoma matsutake (S. Ito et Imai) Sing. (Tricholomataceae), and Tricholomaportentosum (Fr.) Quel. (Tricholomataceae), we isolated eight new sesquiterpenoids, six new meroterpenoids, three new triterpenoids, and twenty eight new sterols. In this review, structural features of these new compounds are discussed.
Asunto(s)
Agaricales/química , Esteroles/química , Terpenos/química , Japón , Estructura MolecularRESUMEN
Hydrolysis of oleoside-type secoiridoid glucosides, oleuropein (1) and ligustroside (2), in the presence of ß-glucosidase provided their aglycones, named (5S,8R,9S)-7-3,4-dihydroxyphenethyl elenolate (3) and (5S,8R,9S)-7-4-hydroxyphenethyl elenolate (4), respectively. The structures of 3 and 4 were identified by spectroscopic means and optical rotation measurements. Evaluation of the cytotoxic and epidermal growth factor receptor (EGFR) tyrosine kinase inhibitory activities of compounds 1-4 showed that compounds 3 and 4 exhibited moderate cytotoxicity against a disease-oriented panel of 39 human cancer cell lines in vitro, whereas compound 3 inhibited the enzyme.
Asunto(s)
Inhibidores Enzimáticos/metabolismo , Inhibidores Enzimáticos/farmacología , Receptores ErbB/antagonistas & inhibidores , Glucósidos Iridoides/metabolismo , Piranos/metabolismo , beta-Glucosidasa/metabolismo , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Inhibidores Enzimáticos/química , Humanos , Glucósidos Iridoides/química , Iridoides , Piranos/químicaRESUMEN
The structures of previously reported oleoacteoside and oleoechinacoside, both being caffeoyl phenylethanoid glycosides (acteoside, echinacoside) esterified with an oleoside 11-methyl ester, were revised by 2D-NMR spectral analysis.