日益增长的抗生素耐药性正在引发医疗保健危机,导致迫切需要新的抗生素来应对严重的医院和社区感染。截短侧耳素是一种具有中等抗菌活性的天然产物,其独特的结构引起了人们对对其支架进行修饰以获得先导化合物的巨大努力。在此,我们报道了一系列在C-14侧链上具有4( 3H )-喹唑啉酮或其类似物支架的新型截短侧耳素衍生物的合成,并研究了它们对金黄色葡萄球菌、表皮葡萄球菌以及革兰氏阴性菌的体外活性。 -阴性细菌(大肠杆菌和沙门氏菌肠亚种。肠白痢)。构效关系(SAR)研究表明,4( 3H )-喹唑啉酮苯环上的取代基对于提高抗菌活性的作用不如取代位置重要,而4(3H)-喹唑啉酮N-3位上的取代基对提高抗菌活性的作用并不重要。 H )-喹唑啉酮对疗效有很大影响。用其他环(吡啶、吡咯、噻吩或环戊基)取代4(3 H )-喹唑啉酮的苯部分也显示出很高的抗菌功效,这意味着苯环对于发挥强大的抗菌性能来说是可有可无的。体外
BITTER TASTE MODIFIERS INCLUDING SUBSTITUTED 1-BENZYL-3-(1-(ISOXAZOL-4-YLMETHYL)-1H-PYRAZOL-4-YL)IMIDAZOLIDINE-2,4-DIONES AND COMPOSITIONS THEREOF
申请人:SENOMYX, INC.
公开号:US20160376263A1
公开(公告)日:2016-12-29
The present invention includes compounds and compositions known to modify the perception of bitter taste, and combinations of said compositions and compounds with additional compositions, compounds, and products. Exemplary compositions comprise one or more of the following: cooling agents; inactive drug ingredients; active pharmaceutical ingredients; food additives or foodstuffs; flavorants, or flavor enhancers; food or beverage products; bitter compounds; sweeteners; bitterants; sour flavorants; salty flavorants; umami flavorants; plant or animal products; compounds known to be used in pet care products; compounds known to be used in personal care products; compounds known to be used in home products; pharmaceutical preparations; topical preparations; cannabis-derived or cannabis-related products; compounds known to be used in oral care products; beverages; scents, perfumes, or odorants; compounds known to be used in consumer products; silicone compounds; abrasives; surfactants; warming agents; smoking articles; fats, oils, or emulsions; and/or probiotic bacteria or supplements.
Halogen-substituted anthranilic acid derivatives provide a novel chemical platform for androgen receptor antagonists
作者:Daniela Roell、Thomas W. Rösler、Wiebke Hessenkemper、Florian Kraft、Monique Hauschild、Sophie Bartsch、Tsion E. Abraham、Adriaan B. Houtsmuller、Rudolf Matusch、Martin E. van Royen、Aria Baniahmad
DOI:10.1016/j.jsbmb.2018.12.005
日期:2019.4
Androgen receptor (AR) antagonists are used for hormone therapy of prostate cancer (PCa). However resistance to the treatment occurs eventually. One possible reason is the occurrence of AR mutations that prevent inhibition of AR-mediated transactivation by antagonists. To offer in future more options to inhibit AR signaling, novelchemical lead structures for new AR antagonists would be beneficial. Here
Transition-metal-catalyst-free synthesis of anthranilic acid derivatives by transfer hydrogenative coupling of 2-nitroaryl methanols with alcohols/amines
By using a transfer hydrogenative coupling strategy, we herein describe a new method for the efficient synthesis of anthranilic acidderivatives, a significantly important class of compounds with extensive applications in organic synthesis and the discovery of bioactive molecules, from 2-nitroaryl methanols and readily available alcohols/amines. The synthesis proceeds with the merits of no need for
Synthesis of simple analogues of methyllycaconitine—an efficient method for the preparation of the N-substituted anthranilate pharmacophore
作者:David Barker、Margaret A Brimble、Malcolm D McLeod
DOI:10.1016/j.tet.2004.05.024
日期:2004.7
The synthesis of several A and AE ring analogues of the alkaloid methyllycaconitine is reported. The key 2-(2″-methylsuccinimido)benzoate ester pharmacophore is introduced using an efficient two step procedure. Esterification of the alcohol precursors with N-(trifluoroacetyl)anthranilic acid under Steglich conditions followed by sodium borohydride mediated cleavage of the trifluoroacetyl group affords