Zobrazeno 1 - 10
of 407
pro vyhledávání: '"Wilfried A. König"'
Publikováno v:
Journal of Essential Oil Bearing Plants. 14:494-497
The hydrodistilled essential oil from the fresh rhizomes of Zingiber pellitum Gagnep. (Zingiberaceae) originating in Vietnam was analyzed by GC and GC-MS. The chemical constituents of the oil were identified using MassFinder program which allows two-
Publikováno v:
Phytochemistry. 71:1371-1374
The essential oil of Schinus terebinthifolius fruits was reinvestigated using GC and GC-MS techniques. Apart from several known compounds three sesquiterpene hydrocarbons with a carbon skeleton exhibiting the rare spiro(cyclopropane) moiety could be
Autor:
Yoshinori Asakawa, Bercu Erol, Hatice Özenoğlu, İsa gökler, Wilfried A. König, Stephan H. von Reuss, K. Hüsnü Can Başer
Publikováno v:
Natural Product Communications. 13:1934578X1801300
WOS: 000436902300029
The distribution of liverworts and hornworts in Turkey has been described. The volatile components of the ether extracts of some selected Turkish, Spanish and French liverwort species, Corsinia coriandrina, Lejeunea lamaceri
The distribution of liverworts and hornworts in Turkey has been described. The volatile components of the ether extracts of some selected Turkish, Spanish and French liverwort species, Corsinia coriandrina, Lejeunea lamaceri
Autor:
Wilfried A. König, Adewale M. Adio
Publikováno v:
Tetrahedron: Asymmetry. 18:1693-1700
Six new sesquiterpenoids and two new norsesquiterpenoids were isolated from the essential oils of three liverworts. The isolated compounds include (+)-eudesma-4,11-dien-8α-ol from the liverwort Diplophyllum albicans , (−)-4β,5β-diacetoxygymnomit
Publikováno v:
Tetrahedron: Asymmetry. 18:1245-1253
Nine new amorphane sesquiterpenoids, (+)-7β-hydroxyamorpha-4,11-diene, (−)-9α-hydroxyamorpha-4,7(11)-diene, (−)-3α-hydroxyamorpha-4,7(11)-diene, (−)-3α-acetoxyamorpha-4,7(11)-diene, (−)-amorpha-4,7(11)-dien-3-one, (+)-2,8-epoxyamorpha-4,7
Publikováno v:
Phytochemistry. 67:778-783
The essential oil of the liverwort Plagiochila bifaria was analysed by GC and GC-MS. Three eudesmane type sesquiterpenes, ent-eudesm-4-en-6-one, ent-eudesm-4(15)-en-6-one, ent-7-hydroxyeudesm-4-en-6-one were isolated and identified as new natural pro
Publikováno v:
Liebigs Annalen. 1996:357-363
The influence of substituents on the rotational energy barrier of a series of 2,2′-bis(trifluoromethyl)- and 2,2′-diisopropylbiphenyl derivatives with various substitution patterns was investigated by dynamic gas chromatography (DGC) with selecti
Autor:
Wilfried A. König, Detlev H. Hochmuth
Publikováno v:
Liebigs Annalen. 1996:947-951
We synthesized numerous new monosubstituted dioxa[11]-paracyclophanes, which are planar-chiral atropisomers due to the hindered rotation of the bridge about the aromatic plane, and we were able to resolve the enantiomers of these compounds by enantio
Publikováno v:
Flavour and Fragrance Journal. 21:622-625
A new phthalide, 3-but-2′-enylidene-4,5,6,7-tetrahydrophthalide (3.5%), was isolated from the essential oil of the aerial parts of Meum athamanticum (L.) Jacq., together with (Z)-ligustilide (0.1%) and sedanonic acid lactone (0.5%), and their struc
Autor:
Elena A. Korolyuk, Yulia V. Kuleshova, Alexey V. Tkachev, Wudeneh Letchamo, Wilfried A. König
Publikováno v:
Journal of Essential Oil Research. 18:100-103
Distillation of the flowering tops of Seseli buchtormense (Fisch. ex Sprengel) W. Koch obtained from various altitudes of Altai Region yielded 0.21% (300 m.a.s.l.), 32% (400 m.a.s.l.), 30% (700 m.a.s.l.) and 0.40% (2030 m.a.s.l.), of aromatic pure mo