Tris carbamic acid esters: inhibitors of cholesterol absorption
申请人:American Home Products Corporation
公开号:US05952354A1
公开(公告)日:1999-09-14
Inhibition of the enzymes cholesterol ester hydrolase (CEH) and/or acyl coenzyme A: cholesterol acyltransferase (ACAT) results in the inhibition of the esterification of cholesterol and are therefore implicated in the inhibition of absorption of cholesterol and thus can lower serum cholesterol levels. Compounds of the formula: ##STR1## where Z is ##STR2## or --Ar.sup.1 --(CR.dbd.CR).sub.1-3 --Ar.sup.2, --AR.sup.1 --NR.sup.7 --AR.sup.2 and A is a linking group inhibit the enzymes CEH and/or ACAT (in vitro) and inhibit absorption of cholesterol.
Process for the synthesis of 4-\x9b6- (hexylcarbamoyloxy)
申请人:American Home Products Corporation
公开号:US05952506A1
公开(公告)日:1999-09-14
This invention is concerned with a new and improved process for the large scale production of 4-\x9b6-(hexylcarbamoyloxy)hexylcarbainoyloxy!-piperidine-1-carboxylic acid 4-phenoxyphenyl ester, disclosed in European Patent Application 0 635 501 A1, published Jan. 25, 1995, a compound that inhibits cholesterol ester hydrolase (CEH) and acylcoenzyme A cholesterol acyltransferase (ACAT). In the invention process, 1-benzyl-4-hydroxypiperidine or 1-methyl-4-hydroxypiperidine is reacted with a carbonylating reagent such as carbonyldiimidazole (CDI) and 6-aminohexanol forming the intermediate 1-benzyl (or methyl)-4-(6-hydroxyhexylcarbamoyloxy)piperidine. Reaction of this intermediate with CDI and hexylamine gives the corresponding 1-benzyl (or methyl)-4-\x9b6-(hexylcarbamoyloxy)-hexylcarbamoyloxy!piperidine. The N-benzyl or methyl group is concomitantly removed and replaced with the 4-phenoxyphenyloxycarbonyl group using 4-phenoxyphenyl chloroformate. The process can be carried out from starting material to final product without isolation of intermediates, without changing the solvent, and the yield and purity of the final product are still more than satisfactory. This modification of the present process is clearly less labor and time intensive than the synthetic route presented in EP 0 635 501 A1.
Tris carbamic acid esters: inhibitors of cholesterol absorption; inhibitors of ACAT and CEH
申请人:AMERICAN HOME PRODUCTS CORPORATION
公开号:EP0635501A1
公开(公告)日:1995-01-25
Inhibition of the enzymes cholesterol ester hydrolase (CEH) and/or acyl coenzyme A: cholesterol acyltransferase (ACAT) results in the inhibition of the esterification of cholesterol and are therefore implicated in the inhibition of absorption of cholesterol and thus can lower serum cholesterol levels. Tris carbamic acid esters of the formula:
where Z is
or -Ar¹-(CR=CR)₁₋₃-Ar², -Ar¹-NR⁷-AR² and A is a linking group inhibit the enzymes CEH and/or ACAT (in vitro) and inhibit absorption of cholesterol.