Synthese de pyrroles et d'oxazoles par pyrolyse de N-(hydroxy-2′ ethyl) amino-3 propenoate
作者:Catherine Pale-Grosdemange、Josselin Chuche
DOI:10.1016/s0040-4020(01)81018-8
日期:1989.1
pyrolysis of various N-(2′-hydroxyethyl)-3-amino propenoates 1–6 and N-(2′-hydroxy-2′-phenyl ethyl)-3-amino propenoate 7–9 at 390°–420°C leads respectively to formylpyrroles 11–16 and benzoylpyrroles 17–19 and, in some cases, to substituted oxazoles 36–39. The results are best explained by the intermediate formation of dicarbonyl derivative followed either by an intramolecular thermal crotonisation
NITROGEN-CONTAINING HETEROCYCLIC DERIVATIVE AND ORGANIC ELECTROLUMINESCENT DEVICE USING SAME
申请人:Idemitsu Kosan Co., Ltd.
公开号:EP2000463A9
公开(公告)日:2009-03-25
Provided are a novel nitrogen-containing heterocyclic derivative having a specific structure and an organic electroluminescence device having an organic thin film layer composed of one or a plurality of layers including at least a light emitting layer and interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the nitrogen-containing heterocyclic derivative alone or as a component of a mixture. With this, the organic electroluminescence device capable of being driven at a low voltage and having high emission luminance and high luminous efficiency can be realized.
Disclosed are methods for treating Alzheimer's disease, and other diseases, and/or inhibiting beta-secretase enzyme, and/or inhibiting deposition of A beta peptide in a mammal, by use of hydrazine compounds of formula (I) wherein the variables R
1
-R
9
are defined herein.
Pyrroloylpyrrole derivatives, processes for their preparation and their use
申请人:BEECHAM GROUP PLC
公开号:EP0032048A1
公开(公告)日:1981-07-15
Compounds of formula (I):
and pharmaceutically acceptable salts and pro-drugs thereof, wherein:
R1 and R2 are the same or different and are hydrogen, halogen or C1-4 alkyl;
R3 is hydrogen or C1-6 alkyl
R4 is hydrogen or methyl; and
n is 0 or 1 having useful pharmacological activity, processes for their preparation and their use