Hypolipidemic effects of α, β, and γ-alkylaminophenone analogs in rodents
摘要:
A number of N-substituted beta-alkylaminophenone derivatives including two alpha- and two gamma-alkylaminophenone analogs were synthesized and investigated for hypolipidemic activity in mice at 8 mg/kg/day ip. Most of these analogs were found to be significantly more active than lovastatin and clofibrate. N-Phenylpiperazinopropiophenone 16 was one of the best derivatives, lowering serum cholesterol levels 41% and serum triglyceride levels 48% after 16 days of drug administration in CF1 mice. In Sprague-Dawley rats, N-phenylpiperazinopropiophenone at 8 mg/kg/day orally also demonstrated more potent hypolipidemic activity than clofibrate, gemfibrozil, and lovastatin at their therapeutic dosage. It significantly reduced tissue cholesterol and triglyceride levels in the aorta wall tissue and lowered the cholesterol and triglyceride levels in chylomicron, very low density lipid (VLDL) and low density lipid (LDL) fractions, while it significantly elevated the cholesterol levels in high density lipid (HDL) fraction. This compound also proved to be active in lowering both cholesterol and triglyceride levels in hyperlipidemic mice and rats induced with atherogenic diet. In vitro liver acetyl coenzyme A (CoA) synthetase, 3-hydroxy-3-methyl glutaryl (HMG) CoA reductase, acyl CoA cholesterol acyl transferase (ACAT), sn-glycerol-3-phosphate acyltransferase, phosphatidylate phosphohydrolase, and hepatic lipoprotein lipase activities were significantly inhibited by N-phenylpiperazinopropiophenone from 25 to 100 mu M.
Regioselective synthesis of piperidinones by metal-catalyzed ring expansion-carbonylation reactions. Remarkable cobalt and/or ruthenium carbonyl catalyzed rearrangement and cyclization reactions
作者:Ming De Wang、Howard Alper
DOI:10.1021/ja00044a010
日期:1992.8
Carbonylation of pyrrolidines, catalyzed by cobaltcarbonyl, results in the formation of piperidinones. The reaction is regiospecific in most cases, and the yield of product is increased when rutheniumcarbonyl is present as a second catalyst. The dual catalytic system [Co 2 (CO) 8 /Ru 3 (CO) 12 ] is useful for the novel rearrangement of heterocyclic nitrogen ketones ((CH 2 ) n NCH 2 COR, n=4-7] to
Boranes in synthesis. 2. Asymmetric synthesis of β-amino alcohols. A facile conversion of 2-amino acetophenones to the corresponding β-amino alcohols in high enantiomeric purity
作者:David A. Beardsley、Gary B. Fisher、Christian T. Goralski、Lawrence W. Nicholson、Bakthan Singaram
DOI:10.1016/s0040-4039(00)76745-1
日期:1994.3
The asymmetric reduction of 2-amino acetophenones with Ipc2BH or Ipc2BCl at −78°C, yields the corresponding β-amino alcohols in good to excellent yields. Although only modest (12–45% ee) enantiomeric excesses were obtained with Ipc2BH, 75–99% enantiomeric excesses were obtained when Ipc2BCl was used as the asymmetric reducing agent.
Hydrazone von α‐Aminoketonen mit cyclischem Aminanteil ergeben mit Quecksilber (II)‐EDTA eine Cyclodehydrierung zu entspr. kondensierten Dihydrotriazinen.
含有环胺的 α-氨基酮的腙与汞 (II) EDTA 发生环化脱氢反应,得到相应的缩合二氢三嗪。
Blicke; Johnson, Journal of the American Pharmaceutical Association (1912), 1956, vol. 45, p. 440
作者:Blicke、Johnson
DOI:——
日期:——
Beardsley David A., Fisher Gary B., Goralski Christian T., Nicholson Lawr+, Tetrahedron Lett, 35 (1994) N 10, S 1511-1514
作者:Beardsley David A., Fisher Gary B., Goralski Christian T., Nicholson Lawr+