Synthesis of 2‐Oxo Amide Triacylglycerol Analogues and Study of Their Inhibition Effect on Pancreatic and Gastric Lipases
作者:George Kokotos、Robert Verger、Antonia Chiou
DOI:10.1002/1521-3765(20001117)6:22<4211::aid-chem4211>3.0.co;2-#
日期:2000.11.17
A general method for the synthesis of chiral 2-ore amide triacylglycerol analogues, from (R)- or (S)-3-aminopropane-1,2-diol, was developed. These novel inhibitors of digestive lipases are analogues of the triacylglycerol molecule, a natural substrate of lipases, and they were designed to contain the Zero amide functionality in place of the scissile ester bond at the sn-1 or sn-3 position and nonhydrolysable ether bonds instead of ester bonds at the other two remaining positions. The 2-ore amide derivatives synthesised were tested for their ability to form stable monomolecular films at the air/water interface by recording their surface pressure/molecular area compression isotherms. The inhibition of porcine pancreatic and human gastric lipases by the 2-ore amides was studied by means of the monolayer technique with mixed films of 1,2-dicaprin and with variable proportions of each inhibitor. The alpha (50) values of these triacylglycerol analogues for PPL and HGL varied between 4.4 to 7.0% and 5.6 to 15.9%, respectively. The chirality at the sn-2 position of Zero amide triacylglycerol analogues affected the a,, value for HGL, but not for PPL.