已经制备了一系列间-和对-XCH 2-取代的肉桂酸甲酯,并且已经在乙醇中确定了α-和β-侧链碳的13 C nmr化学位移。在大多数情况下,取代基诱导的化学位移的大小与X基团的感应取代基常数成正比。C–H超共轭在从取代基到更远距离的感应效应的传递中似乎起着重要作用。乙烯基碳在对位系列中,但是在其他三种情况下,中继似乎主要是通过直接场效应实现的。
A method comprising administering a sulfonamide derivative to a patient requiring activation of glutamate receptors, the sulfonamide derivative represented by the formula ##STR1## wherein A is a napthyl group, a pyridyl group, a phenyl group, a phenyl group substituted by 1 to 5 members selected from the group consisting of a halogen atom, an alkyl group having 1 to 40 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a nitro group, and an acetamido group, or an alkyl group having 1 to 20 carbon atoms; B is an alkylene group having 1 to 3 carbon atoms, a group of --OCH.sub.2 -- or a group of --CH.dbd.CH--; X and Y are the same or different, and are each a hydrogen atom or a fluorine atom; R is a carboxy group, an alkoxycarbonyl group having 2 to 5 carbon atoms, a hydroxymethyl group or a group of ##STR2## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; and R.sub.2 is a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 3 carbon atoms, a carboxymethyl group or an alkoxycarbonylmethyl group having 3 to 6 carbon atoms; m is an integer from 0 to 2; and n is an integer from 0 to 3, or an pharmaceutically acceptable salt thereof, as an effective ingredient. The agonist is efficacious in the medical treatment of nerve degenerative disorders.
Both topoisomerase II (Topo II) and histone deacetylase (HDAC) are important therapeutic targets for cancer. In this study, two series of novel compounds containing pyrimido[5,4-b]indole and pyrazolo[3,4-d]pyrimidine motifs were designed and synthesized as dual Topo II/HDAC inhibitors. MTT assay indicated that all the compounds displayed potential antiproliferative activity against three cancer cell
拓扑异构酶 II (Topo II) 和组蛋白脱乙酰酶 (HDAC) 都是重要的癌症治疗靶点。在这项研究中,设计并合成了两个系列的含有嘧啶并[5,4- b ]吲哚和吡唑并[3,4- d ]嘧啶基序的新型化合物作为双重 Topo II/HDAC 抑制剂。MTT 测定表明,所有化合物均对三种癌细胞系(MGC-803、MCF-7 和 U937)显示出潜在的抗增殖活性,对正常细胞系(3T3)具有低细胞毒性。在酶活性抑制实验中,化合物7d和8d对Topo II和HDAC表现出优异的双重抑制活性。裂解反应测定显示7d是 Topo II 毒物,与对接结果一致。进一步的实验结果表明,化合物7d和8d在MCF-7细胞中可促进细胞凋亡并显着抑制迁移。分子对接显示化合物7d和8d在活性位点结合 Topo II 和 HDAC。分子动力学模拟表明7d可以稳定地结合Topo II和HDAC。