title: Antilipidemic agents, Part. IV: Synthesis and antilipidemic testing of some heterocyclic derivatives of hexadecyl and cyclohexyl hemisuccinate esters.
abstract: Two main classes of novel esters containing a hexadecyl or cyclohexyl group and various heterocyclic rings, like quinazolines, triazoles, thiadiazoles and pyrazoles have been synthesized. The first class involves the synthesis of the hexadecyl ester derivatives; namely 3-substituted-2-(hexadecyloxycarbonylpropionylthio)-4(3H)-quinazol inones 4a-c; 4-substituted-3-(4-pyridyl)-5-(hexadecyloxycarbonylpropionylthio)- 4H- 1,2,4-triazoles 6a-c; 5-substituted-2-(hexadecyloxycarbonylpropionylamino)-1,3,4-thiadia zoles 8a-c, 4-[4-(hexadecyloxycarbonyl)phenyl]azo-5-hydroxy-3-methyl-1-phen ylpyrazole 16; and 1-[4-(hexadecyloxycarbonyl) phenyl]-3-methyl-2-pyrazolin-5-one 19. The second class comprises the synthesis of the cyclohexyl ester derivatives; namely 3-substituted-2-(cyclohexyloxycarbonylpropionylthio)-4(3H)-quinazo linones 11a, b, 4-substituted-3-(4-pyridyl)-5-(cyclohexyloxycarbonylpropionylthio) -4 H-1,2,4-triazoles 12a, b and 5-isopropylthio-2-(cyclohexyloxycarbonylpropionylamino)-1,3, 4-thiadiazole 13. The antihypercholesterolemic as well as antihyperlipidemic activities of representative compounds have been studied. All the compounds tested resulted in a decrease in the lipid indices (cholesterol, LDL-cholesterol, HDL-cholesterol and serum triglycerides levels) studied in mice. Compounds 4b, 11a and 12a showed the highest antihyperlipidemic activity; their activities were almost equal to that of beta-sitosterol which was used as a standard.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Egypt.
authors.forename: N S
authors.initials: NS
authors.lastname: Habib
authors.forename: K A
authors.initials: KA
authors.lastname: Ismail
authors.forename: A A
authors.initials: AA
authors.lastname: el-Tombary
authors.forename: T
authors.initials: T
authors.lastname: Abdel Aziem
mesh_terms: D000818:Animals; D000924:Anticholesteremic Agents / Q000138:chemical synthesis / Q000494:pharmacology; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D004952:Esters / Q000138:chemical synthesis* / Q000494:pharmacology; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000494:pharmacology; D000960:Hypolipidemic Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D013058:Mass Spectrometry; D051379:Mice; D013386:Succinates / Q000138:chemical synthesis* / Q000494:pharmacology; D014280:Triglycerides / Q000097:blood
chemical_list: D000924:Anticholesteremic Agents; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D004952:Esters; D006571:Heterocyclic Compounds; D000960:Hypolipidemic Agents; D013386:Succinates; D014280:Triglycerides; D002784:Cholesterol