摘要:
A process for the preparation of aminopterin with a purity greater than 90%, which comprises reacting folic acid, with a silazane in an organic solvent at a temperature from 60 to 180° C., the said solvent being a tertiary amine organic solvent, or, if a catalyst which is acid in nature is present, a basic organic solvent or acetonitrile, and further adding water such that there is about 2.8 to 7.0 mole water for each mole of folic acid.
摘要:
The present invention relates to novel compositions of methotrexate-containing heterodimeric probe molecules, also known as chemical inducers of dimerization (CID), useful in three-hybrid assays. The invention further relates to synthesis of said compositions and their intermediates. Another aspect of the invention is a method for using the heterodimeric probe molecules described herein in drug screens to identify potential protein targets to a given ligand, optimize protein-ligand interactions, or identify potential ligands for a given protein target. In certain embodiments, the invention contemplates the synthesis of the following methotrexate-containing heterodimeric probe:
摘要:
The present invention relates to charge transport compositions. The invention further relates to electronic devices in which there is at least one active layer comprising such charge transport compositions.
摘要:
An electroluminescence device contains a carrier transporting layer comprising a liquid crystal compound represented by R—X—A—B—X′—R′ (I), wherein A and B denote a naphthalene-2,6-diyl skeleton optionally substituted with one or two of F, Cl, Br, CH3 and CF3, at least one of A and B comprising a naphthalene-2,6-diyl skeleton having one to four CH groups replaced with N; X and X′ denote —O—, —S—, —OOC— or —COO—; and one of R and R′ denotes H, F, Cl, Br, CF3 or a linear or branched alkyl group having 1-20 carbon atoms, and the other one of R and R′ denotes a linear or branched alkyl group having 3-20 carbon atoms, said alkyl groups being independently capable of including one methylene group which can be replaced with —O—, —S—, —CH═CH— or —C≡C— so long as heteroatoms are not adjacent to each other.
摘要:
The instant invention discloses a process for the preparation of compounds of formula I 1 wherein the general symbols are as defined in claim 1, which process comprises hydrolyzing a compound of formula V 2 wherein the general symbols are as defined in claim 1, in an aqueous solvent in the presence of an acid. The compounds of the formula V are new and useful as stabilizers for protecting organic materials, in particular polymers and lubricants, against oxidative, thermal or light-induced degradation.
摘要:
Described is a heterocycle-containing carboxylic acid derivative represented by the following formula (I): 1 wherein A represents, for example, a heteroaryl group which contains at least one nitrogen atom and may have a substituent, B represents, for example, a heteroarylene group, a nullCONHnull group or a group represented by the formula nullCR6nullCR7null in which R6 and R7 represents H, a lower alkyl group or the like, D represents an arylene group, a heteroarylene group or the like, n1 stands for 0 or 1, M represents, for example, a hydroxyl group or a lower alkoxy group; or a physiologically acceptable salt thereof. As a retinoic-related compound replacing retinoic acid, it permits the provision of a preventive and/or therapeutic for various diseases.
摘要:
Compounds of Formula I and II and their pharmaceutically acceptable, salts, esters and prodrugs thereof are selective alpha-1D adrenoceptor anatagonists and may be useful for treating disease states.
摘要:
This invention described novel compounds of formula ##STR1## wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.
摘要:
Condensed nitrogen heterocycles, process for their preparation, and their use as antimycotics The invention relates to compounds of the formula ##STR1## in which two of the symbols A, B, D and E in each case are CR.sup.1 and the remaining two symbols are in each case CH or in each case nitrogen or one of the remaining two symbols is CH and the other is nitrogen and one of the symbols V and W is CR.sup.2 and the other is CH or nitrogen, R.sup.1 and R.sup.2 are in each case H, halogen, alkyl, alkoxy, haloalkyl or haloalkoxy, X is optionally substituted imino, S, SO or SO.sub.2, Y is a bond or alkanediyl, Q is substituted cycloalkyl or substituted 4-piperidinyl, to processes for the preparation, to compositions containing them, and to their use as pesticides, fungicides and antimycotic agents.
摘要:
The invention described novel compounds of formula ##STR1## wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.