Eliseo Ramundo's research while affiliated with University of Naples Federico II and other places
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Publications (23)
From the methanol extract of Alchemilla vulgaris L. (Rosaceae) four flavonoid glycosides were obtained. The isolated compounds were characterized by their spectral and chromatographic data. The known pharmacological properties of flavonoids may explain the use of this plant in popular medicine. © 1998 John Wiley & Sons, Ltd.
Ten coumarin derivatives were isolated and characterized by UV, 1H NMR and GC-MS spectra. Their in vitro efficacy against several human pathogenic bacteria and two fungi was evaluated. The tested coumarins showed mild to undefined activity.
A study on the wild and cultivated medicinal plants used in the Peninsula Sorrentina (southern Italy) is reported; 129 plants distributed among 53 different families beloning to Pteridophytes, Gymnosperms and Angiosperms are used in the treatment of various human diseases. The use of some species is reported for the first time in this paper.
Two new flavonol glycosides, 3′-methylquercetagetin 3-O-galactoside and 3′-methylquercetagetin 3-O-glucoside, have been isolated from the ethyl acetate extract of Eupatorium tinifolium. The structure of these compounds has been established on the basis of chemical and spectral data.
The oligosaccharide composition in seeds of some bean cultivars (two of Vicia faba L. and three of V. faba minor) have been examined. The sugars were isolated by solvent extraction and the concentrated extracts were analysed by PC and HPLC analyses. Characterization was also performed by thin-layer chromatography, enzymatic hydrolysis assays, GC de...
An investigation of the medicinal plants used in the Roccamonfina volcanic group is reported. The phytotherapy appears to be still utilized consistently; approx. 70 entities distributed among 39 different families are used. The chemical components and pharmacological behaviour of most of the species are very well known, however, an accurate phytoch...
Free and esterified sterol levels in seeds of five cultivars of Vicia faba were determined. Sitosterol was the most abundant free sterol, followed by stigmasterol and campesterol. Cholesterol could not be detected. Esters were generally present in greater quantities than the free form of the sterols. The fatty acid content of the plants is also rep...
In view of its interesting pharmacological and physiological functions, the enzymic synthesis of the taurine or the beta-aminoethan- alpha-sulfonic acid is described. This compound has been prepared by decarboxylation with rat heart homogenate and at room temperature of cysteic acid obtained by KMnO4 cysteine oxidation. The taurine prepared has bee...
The effect of nine vegetable extracts was evaluated on the carrageenin-induced oedema in the rat. Our results show that the above extracts are able to exert - at different degree - a very marked decrease of the inflammed site related to the presence in the considered plants of several active biologically compounds as sterols and flavonoids. Prelimi...
Ninhydrin (I) kondensiert mit den N-substituierten Acetamiden (II) zu den Tricyclen (III).
The free amino acid composition of the seeds of some Vicia faba L. and Vicia faba minor cultivars was determined by using gas chromatography. Very high levels of L-Dopa and methionine are found, whereas the alanine, threonine, lysine, and serine contents are relatively high in certain samples. The observed variability in the L-Dopa and methionine c...
Sterols, fatty acids and free amino acids of Helvella crispa and H. monachella were investigated. They contained traces of ergosterol and a high amount of ergosta 5.22-dien-3β-ol. Linoleic acid and l-Dopa are the most abundant fatty acid and free amino acid, respectively. The aqueous extract of H. monachella inhibits prostaglandin release by rat pe...
Die Synthese der im Titel genannten Verbindungen (IV)-(VI) erfolgt durch Kondensation von Ninhydrin (I) mit Carbonsäureamiden (II) zu 2-Hydroxyindanderivaten (III).
Aminothjophenol (I) reagiert mit Ketonen (II) zu Benzothiazolinen (III), die acyliert und mit Sulfurylchlorid zu den Benzothiazinen (V) umgelagert werden können.
A new series of 4H-1,4-benzothiazine derivatives have been synthesized. These products were obtained by treatment with SO2Cl2 in dry ether at room temperature of 1,3-benzothiazolines N-acetylated. The 1,3-benzothiazolines were prepared by condensation in benzene of 2-aminothiophenol with several ketones, in the presence of p-toluenesulphonic acid a...
The sterol composition of four sponges was determined by a combination of gas chromatography and mass spectrometry. Cliona viridis and Chondrosia reniformis contained mainly C27-C29Δ5 mono- and di-unsaturated sterols. Halichondria bowerbanki and Hymeniacidon sanguinea contained stanols and Δ5-sterols. Cholestanol was the major component of the ster...
Citations
... However the activity of marrubiin was the most relevant against tested dermatophytes strains, we explain this by the fact, that pure component give a more potent antifungal activity when compared to a complex mixture of components such as extracts and essential oils which always represent a complex mixture of different chemical components and a few active principles. To the best of our knowledge, there are no reports on the antidermatophytic and antiphytopathogenic properties of marrubiin has been published but in the same line of research the bactericidal, fungicidal and antiviral properties of vegetal terpenes are widely documented [31][32][33], it increase the permeability of the plasma membrane and inhibit process of respiration on mitochondrial membrane of fungi [34,35]. ...
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... The saponin detected at m/z 921.4455 and 907.4298, and marked by a black dot on the HR-ESI-MS spectrum are likely to correspond to the compositions already identified in E. sepositus by Minale et al. (1978), Minale et al. (1979), De Simone et al. (1981 and Riccio et al. (1981) Riccio et al. (1981), which provisionally named sepositoside B (Fig. 1). It should be noted that the two molecules sepositoside A and B are different only at the level of the lateral chain of the aglycone (Fig. 1). ...
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... Sponges from both gen era contain the same types of sterols. A5-Sterols and stan d s are the main representatives in the ste rol mixtures, but their ratio varies in different spe cies (Bergquist et al., 1980; Kanazawa et al., 1979; Dm itrenok et al., 1988; Sica et al., 1978; Erdm an and Thompson, 1972; Voogt, 1976) (Tables I and II). In some cases unusual sterols have been found, for example A-nor sterols in some H ym e niacidon sp. ...
... Furthermore, the plant possesses antimalarial (Thebtaranonth, Thebtaranonth, Wanauppathamkul, & Yuthavong, 1995; Weenen et al., 1990), antidiarrhoeal (Uddin, Mondal, Shilpi, & Rahman, 2006), anti-diabetic (Bawden, Quant, & Raman, 2002a, b), hepatoprotective (Mehta, Shankar, Geetha, & Saluja, 1999) and insecticidal properties (Morimoto, Fuji, & Komai, 1999). The genus Cyperus is characterised by the presence of sesquiterpenes (Bordoloi, Shukla, Nath, & Sharma, 1989; Fengming, Toshio, Hisashi, Kiyafumi, & Masayuki, 2004; Rizk, 1986), quinones (Alves, Moreira, Paul, & Costa, 1992 Rizk, 1986), flavonoids (Abdel-Mogib, Basaif, & Ezmirly, 2000; Abdel-Razik, Nassar, El-Khrisy, Dawidar, & Mabry, 2005; El-Habashy, Mansour, Zahran, El-Hadidi, & Saleh, 1989; Nassar, Abu-Mustafa, Abdel-Razik, & Dawidar, 1998; Rizk, 1986), stilbenoids (Morikawa, Xu, Matsuda, & Yashikawa, 2002), coumarins (Antonio, Eliseo, Paola, Antonia, & Ildefonsa, 1993) and phenylpropanoids (Abdel-Mogib et al., 2000). The previous phytochemical studies of C. rotundus L. have resulted in the isolation of sesquiterpenes (Bawden et al., 2002a; Bordoloi et al., 1989; Chhabra, Sharma, Dhillon, & Vij, 2002; El-Gohary, 2004; Ha et al., 2002; Kalsi, Sharma, Singh, Singh, & Chhabra, 1995; Komai & Tang, 1989; Ohira et al., 1998; Rizk, 1986; Sonwa & Ko¨nigKo¨nig, 2001; Sonwa, Ko¨nigKo¨nig, Kubeczka, & Motl, 1997), flavonoids (Rizk, 1986; El-Habashy et al., 1989), phenylpropanoids (Koichiro & Kunikazu, 1981), phenolic acids (Koichiro & Kunikazu, 1981), alkaloids (Jeong, Miyamoto, Inagaki, Kim, & Higuchi, 2000) and nitrogenous substances (Cantalejo, 1997; Smith, 1977). ...
... Sterols, fatty acids, amino acids, and mannitol have been isolated or detected. 60,61 Water and methanolic extracts of H. crispa have been evaluated for antioxidant potential. 62 In addition, aqueous extract of H. crispa produces mild inhibition of prostaglandin biosynthesis. ...
... Likewise, the methanol extract of Alc. vulgaris contains four flavonoid glycosides and its known pharmacological properties of flavonoids could explain its usage in popular medicine (D'Agostino et al. 1998). In the same way, Alc. ...
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... The structural elucidation of the isolated flavonoids was achieved through chemical and spectroscopic analysis, including HRMS, UV, 1 H, 13 C and 2D NMR, and by comparison with reported data. The isolated flavonoids were identified as catechin (1) [13,14], epicatechin (2) [15,16], taxifolin (3) [17,18], quercetin (4) [19][20][21],quercetin 3-O-β-Dglucopyranoside (5) [21][22][23], and quercetin 3-O-α-Lrhamnopyranoside (6) [21,[24][25][26], isorhamnetin 3-O-β-Dglucopyranoside (7) [21,[27][28][29] and isorhamentin 3-O-β-Drutinoside (8) [21,25,30]. ...
... With regard to the sterols, several molecules were identified (Table 4). If compared to the values cited by Cerri et al., (1985), they do not show relevant differences. The most representative sterols were: ß-Sitosterol (62.54%) and Stigmasterol (20.41%). ...
... The assignments of the signals present in the 1 H HR-MAS NMR spectrum (Fig. 1), after the processing of the results obtained with 2D techniques (Figs. 2–4), are reported inTable 2. In the literature, only some examples of works dealing with NMR analyses to get information about other Fabaceae could be found (Dini et al. 1989; Holse et al. 2011). 1 H HR-MAS NMR spectra mainly showed signals due to lipids and polysaccharides. In particular, the most intense signals, between 0.8 and 2.7 ppm, were assigned to lipids. ...
Reference: 2015 (Longobardi et al. bean
... Similarly, the methylation of the hydroxyl group at position 7 and the presence of a side chain at position 6 enhanced the antifungal activity of suberosin (N29) based on 7-hydroxy-3-(1 1 -dimethylallyl)-8-methoxycoumarin (N3) and umbelliferone (N32) (Figure 2) [75]. The presence of hydroxyl and/or ether groups at carbons 6 or 7 of the basic structure may favor the activity of these compounds [76]. In addition to the direct evaluation of microorganism growth, the quantification of enzymes essential for their growth can inform whether a compound has antifungal activity. ...
