Studies on hypolipidemic agents. II Synthesis of 1-arenesulfonyloxy-2-alkanone derivatives as potent esterase inhibitors and hypolipidemic agents.
作者：KAZUO OGAWA、TADAFUMI TERADA、YOSHIYUKI MURANAKA、TOSHIHIRO HAMAKAWA、SADAO HASHIMOTO、SETSURO FUJII
DOI：10.1248/cpb.34.3252
日期：——
Many 2-oxoalkyl arenesulfonate derivatives having straight or branched alkyl chains of different lengths, 2-oxoalkyl bis-arenesulfonate derivatives, and alkyl arenesulfonate derivatives having a ketal moiety at the 2-position on the alkyl chain were synthesized, and their esterase-inhibitory activities, as well as hypolipidemic activities, were evaluated.Among these compounds, 1-(2, 4, 6-trimethylbenzenesulfonyloxy)-2-dodecanone (III-1u), and 1-(2, 3, 4, 6-tetramethylbenzenesulfonyloxy)-2-hexanone (III-1w), -2-octanone (III-1x) and -2-decanone (III-1y) exhibited potent esterase-inhibitory activities (IC50=3×10-10, 2×10-10, 2×10<-10> and 3×<-11>M, respectively). However, the sulfonate (XV) having a ketal moiety on the alkyl chain and the bis-sulfonate (XVI) exhibited low inhibitory activities toward esterase in comparison with III and XII. Most of the compounds III and some of the compounds XII exhibited potent hypolipidemic activities corresponding to more than 50% lipid-lowering effect (plasma triglyceride and cholesterol ester) in vivo. The structure-activity relatioinships of these compounds are discussed.
合成了许多具有直链或支链不同长度烷基链的2-氧代烷基芳磺酸盐衍生物、2-氧代烷基双芳磺酸盐衍生物以及在烷基链的2-位具有缩酮部分的烷基芳磺酸盐衍生物，并评估了它们的酯酶抑制活性及降血脂活性。在这些化合物中，1-(2,4,6-三甲基苯磺酰氧基)-2-十二烷酮（III-1u）、1-(2,3,4,6-四甲基苯磺酰氧基)-2-己烷酮（III-1w）、-2-辛烷酮（III-1x）和-2-癸烷酮（III-1y）表现出强效的酯酶抑制活性（IC50分别为3×10-10、2×10-10、2×10-10和3×10-11M）。然而，相对于III和XII，具有烷基链上缩酮部分的磺酸盐（XV）和双磺酸盐（XVI）对酯酶的抑制活性较低。大多数化合物III和部分化合物XII表现出强效的降血脂活性，对应于体内超过50%的脂质降低效果（血浆甘油三酯和胆固醇酯）。讨论了这些化合物的构效关系。
