摘要:
Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as well as intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.
摘要:
3,3′-Substituted chiral biaryl phosphine and phosphinite ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition, epoxidation, kinetic resolution and [m+n] cycloaddition. The metal complexes are particularly effective in Ru-catalyzed asymmetric hydrogenation of beta-ketoesters to beta-hydroxyesters and Ru-catalyzed asymmetric hydrogenation of enamides to beta amino acids.
摘要:
A method and an apparatus for producing aromatic aldehydes, including benzaldehyde and metatolualdehyde. Raw materials and a source of oxygen are fed into a tube reactor. The raw materials may be in a liquid or vapor phase. The reaction to form the aldehyde is catalyzed by suitable solid or liquid catalysts, including copper containing catalysts.
摘要:
Novel derivatives of 1-aminoindan and their salts are described. Optically active 1-aminoindan derivatives are prepared by reacting a N-benzyl analog of the desired compound with an enantiomer of mandelic acid. Parkinson's disease, dementia, epilepsy, convulsions, or seizures are treated by administering a compound of the formula: ##STR1##
摘要:
Novel derivatives of 1-aminoindan and their salts are described. Optically active 1-aminoindan derivatives are prepared by reacting a N-benzyl analog of the desired compound with an enantiomer of mandelic acid. Parkinson's disease, dementia, epilepsy, convulsions, or seizures are treated by administering a compound of the formula: ##STR1##
摘要:
The invention relates to a compound selected from these of formula (I): ##STR1## in which R.sub.7, R.sub.8, Y, n and A are as defined in the description, and medicinal product containing the same useful for treating a disorder of the melatoninergic system.
摘要:
The invention relates to a compound selected from these of formula (I): ##STR1## in which R.sub.7, R.sub.8, Y, n and A are as defined in the description, and medicinal product containing the same useful for treating a disorder of the melatoninergic system.
摘要:
This invention is directed to compounds having the structure: ##STR1## wherein R.sub.1 and R.sub.2 are independently the same as or different from each other; when R.sub.1 and R.sub.2 are the same, each is a substituted or unsubstituted arylamino, cycloalkylamino, pyridineamino, piperidino, 9-purine-6-amine or thiazoleamino group; when R.sub.1 and R.sub.2 are different, R.sub.1 =R.sub.3 --N--R.sub.4, and n is an integer from about 4 to about 8. This invention also provides a method of selectively inducing terminal differentiation of neoplastic cells and thereby inhibiting proliferation of such cells. The invention further provides pharmaceutical compositions comprising a therapeutically effective amount of the compounds of the present invention and a pharmaceutically acceptable carrier.
摘要:
Preparation of N-alkenylcarboxamides of the general formula I ##STR1## where at least one of the radicals R.sup.1 is hydrogen and the second radical R.sup.1 is hydrogen or a C.sub.1 -C.sub.4 -alkyl group, the radical R.sup.2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical which can be bonded to the radical R.sup.3 to give a 3- to 10-membered bridge member, and the radical R.sup.3 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, from an alkenyl carboxylate of the general formula II ##STR2## where R.sup.1 has the meanings indicated above and R.sup.4 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, and a carboxamide of the general formula III ##STR3## where the radicals R.sup.2 and R.sup.3 have the meanings indicated above, by reacting the starting compounds in the presence of a base is described.