Ten acyclic isoprenoid fatty acids were synthesized and tested in vitro as possible regulators of the cholesterol/cholesteryl alkanoate ratio in blood serum lipoproteins. Racemic C20 analogs of (3R/S,7R, 11R)-3,7,11,15-tetramethylhexadecanoic (phytanic) acid proved to be powerful activators of human liver cholesterol esterase (HLCE) in vitro. Achiral (E,E)-5,9,13-trimethyltetradeca-4,8,12-trienoic (farnesylacetic) acid, a low-toxicity antiulcerative substance, also significantly accelerates the HLCE-catalyzed hydrolysis of cholesteryl palmitate.
合成了十种非环状
异戊二烯脂肪酸,并体外测试它们作为血液血清脂蛋白中
胆固醇/
胆固醇烷酸酯比例可能调节剂的作用。(3R/S,7R,11R)-
3,7,11,15-四甲基十六烷酸(
植烷酸)的消旋C20类似物在体外被证明是强烈的人肝
胆固醇酯酶(HLCE)活化剂。无手性的(E,E)-5,9,13-三甲基十四碳-4,8,12-
三烯酸(法尼基
乙酸),一种低毒性的抗溃疡物质,也显著加速了HLCE催化的
棕榈酸胆固醇酯的
水解。