Synthesis, Biological Evaluation, and Molecular Modeling Studies of Chiral Chloroquine Analogues as Antimalarial Agents
作者:Srinivasarao Kondaparla、Utsab Debnath、Awakash Soni、Vasantha Rao Dola、Manish Sinha、Kumkum Srivastava、Sunil K. Puri、Seturam B. Katti
DOI:10.1128/aac.02347-17
日期:2018.12
quantitative structure-activity relationship (3D-QSAR) studies of all in-house data sets (168 molecules) of chiral CQ analogues to explain the structure-activity relationships (SAR). Our new findings specify the significance of the H-bond interaction with the side chain of heme for biological activity. In addition, the 3D-QSAR study against the 3D7 strain indicated the favorable and unfavorable sites
在重点研究中,我们设计,合成和生物评估了手性共轭新氯喹(CQ)类似物,并用取代的哌嗪作为抗疟剂。体外和体内研究表明,化合物7c表现出有效的活性(体外50%抑制浓度,菌株3D7的抑制浓度为56.98 nM,菌株K1的抑制浓度为97.76 nM;在体内的选择性指数[最高剂量为12.5 mg / kg [体重],3,510)作为新型抗疟药物。其他化合物(化合物6b,6d,7d,7h,8c,8d,9a和9c)也显示出对CQ敏感菌株(3D7)的中等活性,并且对恶性疟原虫的CQ抗性菌株(K1)的活性更高。 ,我们对手性CQ类似物的所有内部数据集(168个分子)进行了对接和三维定量构效关系(3D-QSAR)研究,以解释构效关系(SAR)。我们的新发现指定了与血红素侧链的H键相互作用对生物活性的重要性。此外,针对3D7菌株的3D-QSAR研究表明,CQ类似物的有利位置和不利位置会引入空间,疏水和正电基团,以提高抗疟活性。
2,3-Dihydro-2-oxo-1<i>H</i>-benzimidazole-1-carboxamides with Selective Affinity for the 5-HT<sub>4</sub> Receptor: Synthesis and Structure−Affinity and Structure−Activity Relationships of a New Series of Partial Agonist and Antagonist Derivatives
作者:Inés Tapia、Luisa Alonso-Cires、Pedro Luis López-Tudanca、Ramón Mosquera、Luis Labeaga、Ana Innerárity、Aurelio Orjales
DOI:10.1021/jm981098j
日期:1999.7.1
reversal of the pharmacological activity due only to a small structural difference might confirm the existence of two binding sites on the 5-HT(4) receptor. In the alkylene spacer, a two-methylene chain is favorable to optimize the affinity and the antagonist or the partial agonist activity. In the ethyl and cyclopropyl series, 5-HT(4) antagonist activity seems to be unrelated to the size of the 4-substituent
Alkylenediamine derivative, antiulcer drug, and antibacterial drug
申请人:SHISEIDO COMPANY LIMITED
公开号:EP0802196A1
公开(公告)日:1997-10-22
An alkylenediamine derivative or a salt thereof expressed by the following formula 1:
wherein W represents a group expressed by the following formula 2 or formula 3;
wherein each of R1 and R2 represents hydrogen atom, a lower alkoxy group, an alkenyloxy group, or a halogen atom;
each of R3 and R3' represents methyl group, prenyl group, or geranyl group and when one of R3 and R3' is prenyl group or geranyl group, another is methyl group;
X represents oxygen atom or sulfur atom;
R10 represents a lower alkyl group; and
R11 represents a halogen atom; and wherein
each of R4, R5, and R6 represents hydrogen atom or a lower alkyl group;
Y represents a group expressed by -CH2-, -O-, or -N(R7)-,while R7 represents a lower alkyl group, an aryl group, a carbamoyl lower alkyl group, an aralkyl group, or a heterocyclic group having 5 to 9 members; and
n represents an integer of 1 to 6.
The alkylenediamine derivative has an anti-ulcer effect or an antibacterial activity against Helicobacter pyroli to be available for prevention or cure of ulcers.