cytellin and astragalin

The chemical investigation of ethanolic extract from rhizomes of Cautleya spicata (Sm.) Baker (Zingiberaceae) has resulted in the isolation of eight compounds which were characterised as β-sitosterol (1), β-sitosterol β-D-glucoside (2), bergapten (3), zerumin A (4), (E)-labda-8(17),12-diene-15,16-dial (5), kaempferol (6), quercetin (7) and astragalin (8). All compounds were identified by spectroscopic and chemical methods. This paper describes the first phytochemical work on C. spicata.

Topics: Glucosides; Kaempferols; Molecular Structure; Phytochemicals; Plant Extracts; Quercetin; Rhizome; Sitosterols; Zingiberaceae

To study the chemical components from the leaves of Fatsia japonica and their antitumor activities in vitro.. All compounds were separated and purified by column chromatography over silica gel, Sephadex LH-20 and preparative HPLC. Their structures were identified by physical and chemical properties and spectral methods including 1H-NMR and 13C-NMR. Antitumor assay was measured by MTT method.. 18 compounds were isolated and identified as palmitic acid (1), β-hydroxypropiovanillone (2), adenosine (3), β-sitosterol (4), daucosterol (5), oleanolic acid (6), echinocystic acid (7), betulinic acid (8), hederagenin(9), hederagenin-3-O-α-L-rhamnopyranosyl(1-->2)-α-L-arabinopyranoside(10), acacetin(11), quercetin(12), quercetin-3-O-β-D-glucopyranoside(13), isovitexin(14), isovitexin-7-O-glucoside(15), astragalin(16), methylpluviatolide(17), and syringaresinol-4-O-β-D-glucopyranoside(18).. All compounds are isolated from the leaves of Fatsia japonica for the first time except compound 1. The ethyl acetate extract and compounds 6, 10, 12 and 18 at the concentration of 0. 5 mg/mL showed inhibitory effect against the proliferation of colon cell line A549 with the inhibitory rate over 90% in vitro.

Topics: Antineoplastic Agents, Phytogenic; Araliaceae; Betulinic Acid; Cell Line, Tumor; Chromatography, High Pressure Liquid; Flavones; Furans; Glucosides; Humans; Kaempferols; Lactones; Lignans; Oleanolic Acid; Pentacyclic Triterpenes; Phytochemicals; Plant Leaves; Sitosterols; Triterpenes

To study the chemical constituents in ethyl acetate extraction of Semen Litchi.. The compounds were isolated and purified by column chromatography on silica gel and Sephadex LH-20 coupled with preparative silica gel TLC, their structures were identified by physicochemical properties and spectrum analysis.. Five compounds were isolated and identified as stigmasterol (1), P-hydroxy-benzaldehyde (2), protocatechuic acid (3), daucosterol (4) and kaempferol-3-O-beta-D-glucopyranoside (5).. Compounds 2 and 5 are obtained from this plant for the first time.

Topics: Benzaldehydes; Fruit; Hydroxybenzoates; Kaempferols; Litchi; Molecular Structure; Seeds; Sitosterols; Stigmasterol

To study the chemical constituents of Exochorda racemosa.. Compounds were isolated and purified by silica gel, Sephadex LH-20, MCI gel and RP-18 column chromatography, and their structures were determined by spectroscopic analysis.. Twenty compounds were isolated and identified as N-p-coumaroyl-N'-caffeoylputrescine (1), sutherlandin trans-p-coumarate (2), apigenin 7-O-methylglucuronide (3), astragalin (4), nicotiflorin (5), kaempferol 3-neohesperidoside (6), rutin (7), apigenin (8), luteolin (9), linalool-1-oic acid (10), betulalbuside A (11), ursolic acid (12) , corosolic acid (13), gynuramide II (14), beta-sitosterol (15), daucosterol (16), uridine (17), adenosine (18), syringin (19), and trans4-hydroxycinnamic acid (20), respectively.. All compounds were obtained from this plant for the first time, moreover, 1 was reported as a new natural product, and 2 is a naturally rare cyanogenic glycoside.

Topics: Apigenin; Flavonoids; Glucosides; Glucuronides; Kaempferols; Luteolin; Magnetic Resonance Spectroscopy; Phenols; Phenylpropionates; Rosaceae; Sitosterols; Triterpenes; Ursolic Acid

To study the chemical constituents from flowers of Koelreuteria paniculata.. Column chromatography and spectral analysis were used to isolate and identify the constituents.. The EtOAc fraction from flowers of Koelreuteria paniculata was separated and purified. Nine compounds were obtained and identified as:sitosterol glucoside (I), gallic acid (II), kaempferol (III), luteolin (IV), kaempferol-3-O-(6"-acetyl)-beta-D-glucopyranoside (V), hyperoside-2"-O-acetyl (VI), hyperoside-2"-O-galloyl (VII), hyperoside (VIII), kaempferol-3-O-D-glucopyranoside (IX).. Nine compounds are isolated for the first time from flowers of Koelreuteria paniculata. Compounds IV, V, VI and IX are isolated from this genus for the first time.

Topics: Flavonoids; Flowers; Gallic Acid; Kaempferols; Luteolin; Magnetic Resonance Spectroscopy; Molecular Structure; Plants, Medicinal; Quercetin; Sapindaceae; Sitosterols

From the methanolic extract of the roots of Clerodendrum philipinum, a new rearranged abietane diterpene (1) and eight known compounds were isolated by various chromatography methods. Their structures were identified by means of spectroscopic methods, including 1D- and 2D-NMR, as 17(15-->16),18(4-->3)-bisabeo-11,12,14,16-tetrahydroxy-3,5,8,11,13,15-abietahexaen-7-one (1), binankadsurin A, clerodenoside A, martynoside, acteoside, isoacteoside, astragalin, p3-sitosterol, and daucosterol. Binankadsurin A was found for the first time from a Clerodendrum species.

Topics: Abietanes; Chromatography; Clerodendrum; Glucosides; Kaempferols; Lignans; Magnetic Resonance Spectroscopy; Methanol; Molecular Structure; Phenols; Sitosterols