Structure-activity relationships within a series of analogues of the histamine H1-antagonist terfenadine
摘要:
A number of terfenadine derivatives including terfenadine enantiomers were synthesized and tested for histamine H-1-receptor affinity. No significant differences, in H-1 activity were found between terfenadine enantiomers. Qualitative structure-activity relationship studies identified the alpha,alpha-diphenyl-4-piperidinomethanol moiety as the pharmacophore for the H-1 activity of this group of compounds. The major role of die phenylbutanol moiety in terfenadine seems to be preventing the compound from crossing the blood-brain barrier.
分子定义的手性boxmi铁烷基络合物催化各种官能化酮的氢硼化,并提供相应的手性卤代醇,氧杂杂环(环氧乙烷,氧杂环丁烷,四氢呋喃和二恶烷)和氨基醇,具有出色的对映选择性(高达> 99%ee)和转化效率在低催化剂负载量(低至0.5 mol%)下。在−30°C时,周转频率大于40000 h -1突显了这种富含地球的金属催化剂的活性,该催化剂可耐受许多官能团。
Provided herein are compositions and methods for treating or preventing infection.
本文提供了用于治疗或预防感染的组合物和方法。
Enzymatic preparation of optically active 4-chloro-1-phenyl-1-butanol derivatives
作者:Daniele Bianchi、Paola Moraschini、Aldo Bosetti、Pietro Cesti
DOI:10.1016/s0957-4166(00)86266-7
日期:1994.10
The enantiomers of substituted 4-chloro-1-phenyl-1-butanol were prepared by stereoselectivelipase-catalyzed resolution of the corresponding esters and alcohols, in water and in organic solvent, respectively.
Chlorohydrins and oxaheterocycles are synthetically valuable building blocks for diverse natural products and therapeutic substances. A highly efficient Ir/f-phamidol-catalyzed asymmetric hydrogenation of ω-chloroketones was successfully developed, and various chlorohydrins and oxaheterocycles were obtained divergently with excellent yields and enantioselectivities (up to >99% yield and >99% ee). Synthetic
Provided herein are compositions and methods for treating or preventing infection.
本文提供了用于治疗或预防感染的组合物和方法。
Repurposing the Antihistamine Terfenadine for Antimicrobial Activity against <i>Staphylococcus aureus</i>
作者:Jessamyn I. Perlmutter、Lauren T. Forbes、Damian J. Krysan、Katherine Ebsworth-Mojica、Jennifer M. Colquhoun、Jenna L. Wang、Paul M. Dunman、Daniel P. Flaherty
DOI:10.1021/jm5010682
日期:2014.10.23
Staphylococcus aureus is a rapidly growing health threat in the U.S., with resistance to several commonly prescribed treatments. A high-throughput screen identified the antihistamine terfenadine to possess, previously unreported, antimicrobial activity against S. aureus and other Gram-positive bacteria. In an effort to repurpose this drug, structure-activity relationship studies yielded 84 terfenadine-based analogues with several modifications providing increased activity versus S. aureus and other bacterial pathogens, including Mycobacterium tuberculosis. Mechanism of action studies revealed these compounds to exert their antibacterial effects, at least in part, through inhibition of the bacterial type II topoisomerases. This scaffold suffers from hERG liabilities which were not remedied through this round of optimization; however, given the overall improvement in activity of the set, terfenadine-based analogues provide a novel structural class of antimicrobial compounds with potential for further characterization as part of the continuing process to meet the current need for new antibiotics.