Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Karin M. Valant-Vetschera"'
Autor:
Yoshinori Asakawa, Karin M. Valant-Vetschera, Anton A. Legin, Lothar Brecker, Nataliya K. Kovtonyuk, Danka Bukvicki, Bernhard K. Keppler
Publikováno v:
Phytochemistry Letters. 44:90-97
Twenty-one accessions of Primula veris subsp. macrocalyx (Primulaceae) were chemically analyzed to clarify the presence of naturally rare macrocyclic bis-bibenzyls (BB). These compounds are typically found in liverworts but not known from higher plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e5435cee320024ff8b14faa44460e72
https://doi.org/10.1016/j.phytol.2021.06.014
https://doi.org/10.1016/j.phytol.2021.06.014
Autor:
Monika Schmoll, Bao-Bao Shi, Markus Bacher, Johann Schinnerl, Lothar Brecker, Wolfgang Hinterdobler, Dieter Baurecht, Karin M. Valant-Vetschera, Irmgard Krisai-Greilhuber
Publikováno v:
Natural Product Research. 37:85-92
Four new leucine-derived cytochalasans, possessing a 5,6,5,8-ring (1) and a 5,6,11-ring core (2-4), were isolated from a cultivated endophytic fungus Xylaria sp. strain WH2D4 (Xylariaceae). This fungus was isolated from leaves of the neotropical tree
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f94f62cd505b87166fe82b7061c5c0a
https://doi.org/10.1080/14786419.2021.1956490
https://doi.org/10.1080/14786419.2021.1956490
Autor:
Lothar Brecker, Nitkamon Iamprasertkun, Karin M. Valant-Vetschera, Anna Maria Tschigg, Johann Schinnerl, Florian Traxler, Srunya Vajrodaya
Publikováno v:
South African Journal of Botany. 137:242-248
Phytochemical investigation of different organs and of the latex of Wrightia religiosa (Teijsm. & Binn.) Benth. as well as of the stem bark of Wrightia pubescens R. Br. (Apocynaceae), both collected in Thailand, yielded a total of seven known compoun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2411cf947c1376d9ce5950cad4e37b4a
https://doi.org/10.1016/j.sajb.2020.10.019
https://doi.org/10.1016/j.sajb.2020.10.019
Autor:
Karin M. Valant-Vetschera, Muhammad Ishaque, Saadia Masood, Markus Bacher, Johann Schinnerl, Sobia Nisa, Yamin Bibi, Samha Al Ayoubi, Abdul Qayyum
Publikováno v:
Antibiotics
Antibiotics; Volume 10; Issue 9; Pages: 1128
Antibiotics, Vol 10, Iss 1128, p 1128 (2021)
Antibiotics; Volume 10; Issue 9; Pages: 1128
Antibiotics, Vol 10, Iss 1128, p 1128 (2021)
Ethnopharmacological approaches provide clues for the search of bioactive compounds. Dryopteris ramosa (Hope) C. Chr. (plant family: Dryopteridaceae) is an ethnomedicinal plant of the Galliyat region of Pakistan. The aqueous fraction (AqF) of D. ramo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::898b3097ff6f65cbb4c5800765c21be9
https://pubmed.ncbi.nlm.nih.gov/35326886
https://pubmed.ncbi.nlm.nih.gov/35326886
Autor:
Thomas Rosenau, Karin M. Valant-Vetschera, Antje Potthast, Raveevatoo Buathong, Florian Schindler, Srunya Vajrodaya, Markus Bacher, Johann Schinnerl
Publikováno v:
Phytochemistry Letters. 33:77-80
Phytochemical investigation of methanolic extracts from the so far unstudied plant species Ixora cibdela Craib (Rubiaceae) led to the isolation and identification of an uncommon and novel fatty acid and the related methyl ester named as cibdelin A an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a520e2eaa6ae387fbe940e23c956e496
https://doi.org/10.1016/j.phytol.2019.07.011
https://doi.org/10.1016/j.phytol.2019.07.011
Autor:
Katharina Maria Sandler, Sumet Kongkiatpaiboon, Lothar Brecker, Karin M. Valant-Vetschera, Johann Schinnerl, Xiang-Hai Cai, Gao Chen
Publikováno v:
Phytochemistry Letters. 28:168-173
Comparative HPLC-PDA analyses of methanolic root extracts of the almost unstudied Chinese endemic species Stemona mairei, collected from nine locations throughout its natural habitat in northern Yunnan, led to the identification of the pyrrolo[1,2-α
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4c5a6e0c28ebd1ddc25ebacdd1951b4
https://doi.org/10.1016/j.phytol.2018.10.013
https://doi.org/10.1016/j.phytol.2018.10.013
Tribes Palicoureeae and Psychotrieae (Rubiaceae, Gentianales) are complex and speciose sister groups with a pantropical distribution. Since the initial studies on ipecacuanha more than two centuries ago, species of the group have been subject to nume
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::665c24ed68e3a2253a1895d18eded5f8
https://doi.org/10.1007/s11101-021-09769-x
https://doi.org/10.1007/s11101-021-09769-x
Autor:
Markus Bacher, Johann Schinnerl, Srunya Vajrodaya, Natthawadi Wongthet, Karin M. Valant-Vetschera, Nuttha Sanevas
Publikováno v:
Biochemical Systematics and Ecology. 80:84-90
Methanolic crude extracts obtained from leaves, stem bark and root bark of 57 accessions of Clausena excavata, C. harmandiana, of both varieties of C. wallichii, as well as of three unidentified Clausena samples, were analysed for the presence of cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b36ca14653bfc5f07dc11a3e44be3621
https://doi.org/10.1016/j.bse.2018.07.007
https://doi.org/10.1016/j.bse.2018.07.007
Autor:
Lothar Brecker, Isabella Maria Fischer, Christiane Groher, Karin M. Valant-Vetschera, Christoph Kornpointner, Louise Popl, Johann Schinnerl, Andreas Berger
Publikováno v:
Phytochemistry Letters. 26:164-169
Phytochemical investigations of methanolic extracts obtained from leaves and stem bark of Carapichea affinis (Rubiaceae: Palicoureeae), a poorly known relative of the famous vomiting root ipecac (C. ipecacuanha), led to the isolation and identificati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1a3b9124b1c2cd72911bdd49c895549
https://doi.org/10.1016/j.phytol.2018.05.004
https://doi.org/10.1016/j.phytol.2018.05.004
Autor:
Thomas Rosenau, Birgit Holzbach, Viktor Reuter, Karin M. Valant-Vetschera, Lothar Brecker, Markus Bacher, Johann Schinnerl
Publikováno v:
Biochemical Systematics and Ecology. 98:104310
Populations of Primula auricula L. subsp. auricula from Austrian Alps were studied for flavonoid composition of both farinose exudates and tissue of leaves. The leaf exudate yielded Primula-type flavones, such as unsubstituted flavone and its derivat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35a5d37cb6d24d5fb95c21365c94bf53
https://doi.org/10.1016/j.bse.2021.104310
https://doi.org/10.1016/j.bse.2021.104310