A compound of formula (I)
1
wherein R
1
and R
2
represent a hydrogen atom or an aryl, a heterocyclic, an alkyl or an alkenyl, which are optionally substituted, R
3
represents a hydrogen atom or a hydroxyl and X
1
and X
2
represent an oxygen atom, a sulfur atom or a nitrogen containing group, a pharmaceutically acceptable derivative thereof or a salt thereof. A pharmaceutical composition comprising the compound for the prevention or treatment of a bacterial infection. A method for the prevention or treatment of a bacterial infection in a warm-blooded animal comprising administering a pharmacologically effective amount of the compound.
Pyrimidine nucleoside derivatives having anti-tumor activity, their preparation and use
申请人:Sankyo Company Limited
公开号:EP0536936A1
公开(公告)日:1993-04-14
Compounds of formula (I):
[in which: R¹, R² and R³ are the same or different and each represents a hydrogen atom, an optionally substituted alkanoyl group or an alkenylcarbonyl group, provided that at least one of R¹, R² and R³ represents an unsubstituted alkanoyl group having from 5 to 24 carbon atoms, said substituted alkanoyl group or said alkenylcarbonyl group; and one of R⁴ and R⁵ represents a hydrogen atom and the other represents a cyano group]; have valuable anti-tumour activity.
Matériau à base de résines synthétiques, procédé pour sa fabrication et ses utilisations, notamment dans la fabrication d'articles de maroquinerie, de papeterie et de boîtage
L'invention a pour objet un matériau synthétique essentiellement constitué de :
A. Un système de résines comprenant : 0 à 95 % en poids de chlorure de polyvinyle (PVC) suspension ; 0 à 95 % en poids de PVC émulsion ; 5 à 25 % en poids d'un système constitué d'une ou plusieurs résines modifiantes, apte à améliorer la résistance à la pliure, et 0 à 3 % en poids de résine acrylique ; et
B. pour 100 g de système de résines A : 0 à 15 g de plastifiant ; 0 à 3 g de costabilisant thermique ; 1 à 3 g de stabilisant thermique ; 0,5 à 4 g d'un système lubrifiant ; 0 à 20 g d'une charge minérale ; 0 à 5 g d'un système de coloration ; 0 à 1 g d'agent anti-UV ; et 0 à 1 g d'antioxydant.
Ce matériau se présente avantageusement sous forme de feuilles de 0,2 à 1,5 mm d'épaisseur.
Application notamment à la fabrication d'articles de maroquinerie, de papeterie ou de boîtage.
Amide and urea derivatives having anti-hypercholesteremic activity, their preparation and their therapeutic uses
申请人:SANKYO COMPANY LIMITED
公开号:EP0632036A2
公开(公告)日:1995-01-04
Compounds of formula (I):
in which : R1 is alkyl or a group of formula (II), (III), (IV) or (V):
and in which the groups R2, R3, R4 and R5 are hydrogen or various organic groups ; and pharmaceutically acceptable salts thereof are useful in the treatment and prophylaxis of hypercholesteremia and arteriosclerosis ; methods for the preparation of such compounds are also provided.
UNSATURATED NITRILE/CONJUGATED DIENE COPOLYMER, PROCESS FOR PRODUCING THE SAME, AND RUBBER COMPOSITION
申请人:NIPPON ZEON CO., LTD.
公开号:EP0692496A1
公开(公告)日:1996-01-17
An unsaturated nitrile/conjugated diene copolymer having a Mooney viscosity of 15 to 65 and containing at least 0.03 mol of C₁₂-C₁₆ alkylthio groups per 100 mol of the constituent monomer units in its molecule, wherein the alkylthio group contains at least three tertiary carbon atoms and a sulfur atom directly bonded to at least one of the tertiary carbon atoms. The copolymer is produced by copolymerizing an unsaturated nitrile compound with a conjugated diene in the presence of a free-radial initiator by using an alkanethiol compound having the above-mentioned alkylthio group as a molecular weight modifier. A rubber composition is prepared by blending this copolymer with a sulfur-containing vulcanizer.