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Guaianolides from Centaurea nicolai: antifungal activity
(Pergamon-Elsevier Science Ltd, Oxford, 1999)
A new guaianolide, 3-deacetyl-9-O-acetylsalograviolide A, along with four known closely related lactones, salograviolide A, 9-O-acetylsalograviolide A, kandavanolide and salograviolide B were detected in the aerial parts ...
New radical reactions of S-alkoxycarbonyl xanthates. Total synthesis of (+/-)-cinnamolide and (+/-)-metlhylenolactocin
(Pergamon-Elsevier Science Ltd, Oxford, 1999)
Irradiation with visible light of S-alkoxycarbonyl xanthates derived from various alcohols gives rise to alkoxycarbonyl radicals with bifurcate reactivity: loss of carbon dioxide leads to deoxygenated derivatives (i.e. ...
Highly oxygenated guaianolides from Anthemis cretica subsp. cretica
(Pergamon-Elsevier Science Ltd, Oxford, 1999)
Two new guaianolides, i.e. anthemolide B and 8-O-angeloyl-9-O-acetylanethemolide B, in addition to 12 known closely related guaianolides were identified in the aerial parts of the flowering plant Anthemis cretica subsp. ...
Oxidation products of hyperforin from Hypericum perforatum
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
The isolation of two oxidation products of hyperforin from the aerial parts of Hypericum perforatum and their structure determination by means of 2D NMR methods is reported. The products had the same 1-(2-methyl-1-oxopro ...
Higher environmental temperature potentiates cataleptic effect of fentanyl in rats
(Japanese Pharmacological Soc, Kyoto, 1998)
The influence of higher environmental temperature (HET=30+/-1 degrees C) on fentanyl-induced behavior was studied in unrestrained rats. Subacute exposure (3 days) of rats to HET significantly (P lt 0.01) increased the ...
Cu(II), Ni(II) and Fe(III) complexes with 2 ',2 '''-(2,6-pyridindiyldiethylidene)-dioxamohydrazide in a monoanionic form. The crystal structure of aqua-2 ',2 '''-(2,6-pyridindiyldiethylidene)-dioxamohydrazidecopper(II) perchlorate
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
Starting from Cu(II) and Ni(II) perchlorate and Fe(III) chloride in the presence of 2,6-diacetylpyridine (dap) and semioxamazide (sox), the [Cu(Hdapsox)H2O]ClO4 (I), [Ni(Hdapsox)(MeOH)(2)]ClO4 (II) and [Fe(Hdapsox)Cl-2]. ...
Physicochemical and immunologic characterization of low molecular-weight allergoids of Dactylis glomerata pollen proteins
(Munksgaard Int Publ Ltd, Copenhagen, 1999)
Background: Orchard grass (Dactylis glomerata) pollen proteins were chemically modified by means of acid anhydrides (maleic and succinic anhydride) to obtain low-molecular-weight allergoids. Chemical modification in both ...