Structure-Activity Relationships of C1 and C6 Side Chains of Zaragozic Acid A Derivatives
作者:Mitree M. Ponpipom、Narindar N. Girotra、Robert L. Bugianesi、Cathleen D. Roberts、Gregory D. Berger、Robert M. Burk、Robert W. Marquis、William H. Parsons、Kenneth F. Bartizal
DOI:10.1021/jm00049a022
日期:1994.11
esters. In the preparation of C6 ethers, C4 and C4,6 bisethers were also isolated; their relative activity is: C6 > C4 > C4,6. These C6 long-chain derivatives are subnanomolar squalene synthase inhibitors; they are, however, only weakly active in inhibiting hepatic cholesterol synthesis in mice. The C6 short-chain derivatives are much less active in vitro, but they all have improved oral activity in
系统地修改了一种有效的角鲨烯合酶抑制剂zaragozic A的C6酰基侧链,以改善其生物学活性。将C6侧链简化为辛酸酯具有有害作用。增加线性链长度可提高体外活性,直至十四烷酸酯为止。ω-苯氧基比ω-苯基更好的活性增强剂。制备了许多C6氨基甲酸酯,醚和碳酸酯,发现它们具有与C6酯相似的活性。在制备C6醚时,还分离出C4和C4,6双醚。它们的相对活性为:C6> C4> C4,6。这些C6长链衍生物是亚纳摩尔角鲨烯合酶抑制剂。然而,它们仅在抑制小鼠肝胆固醇合成中具有弱活性。C6短链衍生物在体外的活性低得多,但它们在小鼠中的口服活性均得到改善。正丁酰基类似物的C1烷基侧链(ED50为4.5 mg / kg)的修饰不能进一步提高po活性。这些C6长链衍生物中的许多也是体外有效的抗真菌剂。