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International Journal of Medicinal Mushrooms

Erscheint 12 Ausgaben pro Jahr

ISSN Druckformat: 1521-9437

ISSN Online: 1940-4344

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00066 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.34 SJR: 0.274 SNIP: 0.41 CiteScore™:: 2.8 H-Index: 37

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p-Terphenyl Compounds Possessing Antioxidative Activity from Japanese Inedible Mushrooms

Volumen 7, Ausgabe 3, 2005, 412 pages
DOI: 10.1615/IntJMedMushrooms.v7.i3.550
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ABSTRAKT

We are continuing to study biologically active substances from inedible mushrooms. In this paper, we report 36 new p-terphenyl compounds possessing antioxidative activity from fruit bodies of four Japanese inedible fungi named Thelephora aurantiotincta Corner, T. terrestris Ehrn., and Hydnellum caeruleum (Hornem.)P.Karst., belonging to Thelephoraceae; and Paxillus curtisii Berk., belonging to Coniophoraceae. Eight new p-terphenyl compounds, thelephantins A−H (1−8) (Quang et al., 2003a,b) and five known compounds—atro-mentin, 2-O-methylatromentin, gabajunins C and E, and thelephorin A—were isolated from T. aurantiotincta. Eight new p-terphenyl compounds—thelephantins I−P (9−16) (Quang et al., 2004) together with two known compounds, 2-O-methylatromentin and dihydroaurantiacin—were isolated from H. caeruleum, seven new p-terphenyl derivatives—terrestrins A−G (17−23) and two new pregnane-type steroids, terrestrones A and B (24, 25) from T. terrestris. In addition, 13 new p-terphenyl derivatives named curtisians E−Q(26−38) (Quang et al., 2003c−e) along with two known compounds—curtisians C and D—were also obtained from P. curtisii. These absolute structures were determined by 2D NMR, MS, IR, and UV spectra, X-ray crystallographic analysis, and chemical reactions.
Antioxidative activities of these new p-terphenyl compounds were evaluated by diphenyl-p-picryhydrazyl (DPPH) radical scavenging effects. Some new p-terphenyl compounds showed equivalent or strong activities compared with vitamin C, α-tocopherol, and BHA (tert-butylhydroxyanisole).

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