HMG-CoA reductase inhibitors: design, synthesis, and biological activity of tetrahydroindazole-substituted 3,5-dihydroxy-6-heptenoic acid sodium salts
摘要:
Compounds comprising a series of 7-[2-(4-fluorophenyl)-4,5,6,7-tetrahydro-2H-indazol-3-yl]-3,5-dihydroxy-6-heptenoic acid sodium salts (18) were synthesized and tested for their ability to inhibit HMG-CoA reductase in a partially purified enzyme preparation and cholesterol biosynthesis from acetate in cultured HEP-G2 cells. Changing the size of the saturated ring of the tetrahydroindazole nucleus did not improve potency, but incorporation of substituents at the 7-position resulted in up to 1700-fold improvement in inhibitory potency. Structure-activity studies revealed that the most potent compounds possess a substituted benzyl group at the 7-position, with a preference for steric bulk at the para position of the benzene ring. The most potent enzyme inhibitor (18t, IC50 = 3.0 nM) is approximately 3-fold more potent than lovastatin sodium salt (2). The most potent cholesterol biosynthesis inhibitor in HEP-G2 cells (18q, IC50 = 0.078 muM) is slightly less potent than 2 (sodium salt). Molecular modeling studies suggested that, when compared to the parent compound (18b) lacking the appropriate 7-substituent, 18t overlaps better with 2 and literature inhibitors 5 and 6 in a hydrophobic binding region adjacent to the enzyme active site.
Tetrahydroindazole, tetrahydrocyclopentapyrazole, and hexahydrocycloheptapyrazole compounds and their use as HMG-COA reductase inhibitors
申请人:ORTHO PHARMACEUTICAL CORPORATION
公开号:EP0529854A2
公开(公告)日:1993-03-03
Compounds of the general formula I :
are disclosed as useful in the treatment or prevention of hypercholesterolemia, hyperlipoproteinemia and atherosclerosis. Novel intermediate compounds used to make the compound of formula I are also disclosed.
通式 I 的化合物 :
公开了用于治疗或预防高胆固醇血症、高脂蛋白血症和动脉粥样硬化的化合物。还公开了用于制造式 I 化合物的新型中间体化合物。
DOLMAZON, RENE, J. HETEROCYCL. CHEM., 25,(1988) N 3, C. 751-757