摘要:
THE PREPARATION OF B-COLLIDINE FROM METHYL VINYL KETONE AND AN AMINE SUCH AS, FOR EXAMPLE, BENZYLAMINE, THROUGH VARIOUS INTERMEDIATES, FOR EXAMPLE, 3-ACETYL-1BENZYL - 1,2,5,6 - TETRAHYDRO-4-METHYLPYRIDINE, 3-ACETYL1,2,5,6 - TETRAHYDRO - 4 - METHYLPYRIDINE, 3 - ACETYL-4METHYLPYRIDINE, 1 - BENZYL - 3 - (1-HYDROXYETHYL)-1,2,5,6TETRAHYDRO- 4 - METHYLPYRIDINE, 3-(1-HYDROXYETHYL)-4METHYLPYRIDINE AND 1-BENZYL-3-ETHYLENE-1,2,3,6-TETRAHYDRO - 4-METHYLPYRIDINE, IS DESCRIBED. B-COLLIDINE, I.E., 3ETHYL-4-METHYLPYRIDINE, IS USEFUL IN THE SYNTHESIS OF, FOR EXAMPLE, DIHYDROQUINIDINE.
摘要:
NITROBENZYL SULFUR CONTAINING ORGANIC ACIDS ARE INTERMEDIATES IN THE PREPARATION OF PHARMACEUTICALLY ACTIVE 4,1-BENZOTHIAZEPIN-2(1H)-ONES AND 4,1-BENZOTHIAZEPINES HAVING A BASIC SIDE CHAIN ON THE 1 NITROGEN ATOM.
摘要:
Quinine, quinidine and analogs thereof, are prepared by reacting a 4-quinolyllithium compound with a 4,5-erythro-5-ethyl(or vinyl)-quinuclidine-2 Epsilon -carboxaldehyde or the corresponding quinuclidine-2-carboxylic acid alkyl ester. Also described, inter alia, is the preparation of a 4,5-erythro-5ethyl(or vinyl)-quinuclidine-2 Epsilon -carboxaldehyde, and a 4,5-erythro-5-ethyl(or vinyl)-quinuclidine-2 Epsilon -carboxylic acid and esters thereof. The end products are useful as antimalarial and antiarrhythmic agents.
摘要:
The preparation of quinine, quinidine, isomers and derivatives thereof from the correspondingly substituted 4-methylquinoline and 1-acyl(or 1-H)-3-vinyl(or lower alkyl)-4-piperidine acetic acid esters (or acetaldehyde) through alternative series of reaction steps which comprise, condensation, halogenation, deacylation, reduction, cyclization and hydroxylation, is described. Also described is the preparation of 1-acyl(or 1-H)-3vinyl-4-piperidineacetic acids and esters thereof and 1-acyl-3vinyl-4-piperidineacetaldehyde utilizing the corresponding 7acyldecahydro-2H-pyrido(3,4-d)azepin-2-one, prepared from 2-acyl1,3,4,7,8,8a-hexahydro-6(2H)-isoquinolone. The end products are useful as antimalarial and antiarrhythmic agents.
摘要:
The present invention relates to a process for the preparation of loganin and analogs thereof. Loganin and analogs thereof are useful in the preparation of alkaloids.
摘要:
The preparation of quinine, quinidine, isomers and derivatives thereof from the correspondingly substituted 4-methylquinoline and 1-acyl(or 1-H)-3-vinyl(or lower alkyl)-4-piperidine acetic acid esters (or acetaldehyde) through alternative series of reaction steps which comprise, condensation, halogenation, deacylation, reduction, cyclization and hydroxylation, is described. Also described is the preparation of 1-acyl(or 1-H)-3vinyl-4-piperidineacetic acids and esters thereof and 1-acyl-3vinyl-4-piperidineacetaldehyde utilizing the corresponding 7acyldecahydro-2H-pyrido(3,4-d)azepin-2-one, prepared from 2-acyl1,3,4,7,8,8a-hexahydro-6(2H)-isoquinolone. The end products are useful as antimalarial and antiarrhythmic agents.