Development of Inhibitors against <i>Mycobacterium abscessus</i> tRNA (m<sup>1</sup>G37) Methyltransferase (TrmD) Using Fragment-Based Approaches
作者:Andrew J. Whitehouse、Sherine E. Thomas、Karen P. Brown、Alexander Fanourakis、Daniel S.-H. Chan、M. Daben J. Libardo、Vitor Mendes、Helena I. M. Boshoff、R. Andres Floto、Chris Abell、Tom L. Blundell、Anthony G. Coyne
DOI:10.1021/acs.jmedchem.9b00809
日期:2019.8.8
with improved efficacy. tRNA (m1G37) methyltransferase (TrmD) is a promising target for novel antibiotics. It is essential in Mab and other mycobacteria, improving reading frame maintenance on the ribosome to prevent frameshift errors. In this work, a fragment-based approach was employed with the merging of two fragments bound to the active site, followed by structure-guided elaboration to design potent
脓肿分枝杆菌 (Mab) 是一种快速增长的多重耐药非结核分枝杆菌,对囊性纤维化和其他已有慢性肺部疾病的患者构成越来越大的威胁。单克隆抗体肺部感染很难治疗,有时甚至不可能治疗,会导致肺功能加速衰退和过早死亡。因此,迫切需要开发具有改善功效的新型抗生素。tRNA (m1G37) 甲基转移酶 (TrmD) 是新型抗生素的一个有前景的靶标。它对于 Mab 和其他分枝杆菌至关重要,可改善核糖体上的读码框维护以防止移码错误。在这项工作中,采用基于片段的方法,合并与活性位点结合的两个片段,然后进行结构引导的精加工,以设计针对 Mab TrmD 的有效纳摩尔抑制剂。其中几种化合物对分枝杆菌物种表现出有希望的活性,除了 Mab 之外,还包括结核分枝杆菌和麻风分枝杆菌,支持使用 TrmD 作为开发抗分枝杆菌化合物的靶点。
The palladium-catalyzed direct C3-cyanation of indoles using acetonitrile as the cyanide source
The ligand-free palladium-catalyzed C3-cyanation of indoles via direct C–H functionalization was achieved. This protocol, utilizing CH3CN as a green and readily available cyanide source, produced the desired products in moderate to good yields through transition-metal-catalyzed C–CN bond cleavage.
N-(aminoiminomethyl)-1H-indole carboxamide derivatives were synthesized and their inhibitory potencies against the Na+/H+ exchanger were measured. Variation of the carbonylguanidine group at the 2- to 7-position of the indole ring system showed that a substitution at the 2-position improved the Na+/H+ exchanger inhibitory activity the most in vitro. This led to the synthesis and evaluation of an extensive series
合成了一系列的N-(氨基亚氨基甲基)-1H-吲哚羧酰胺衍生物,并测定了它们对Na + / H +交换剂的抑制能力。吲哚环系统2到7位羰基胍基团的变化表明,在2位取代可以最有效地提高Na + / H +交换子的抑制活性。这导致合成和评估了一系列广泛的N-(氨基亚氨基甲基)-1H-吲哚-2-羧酰胺衍生物。在吲哚环系统的1-位具有烷基或取代的烷基的衍生物显示出更高水平的体外活性。N-(氨基亚氨基甲基)-1-(2-苯乙基)-1H-吲哚-2-羧酰胺(49)具有最强的活性。
Ring-fused compound
申请人:Nagai Keita
公开号:US08987473B2
公开(公告)日:2015-03-24
The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.
[in the formula,
R1 is -Q1-A1 and the like; is a double bond or a single bond; when is a double bond, W1 is a nitrogen atom or a group represented by the general formula: ═C(Ra)—, and W2 is a nitrogen atom or a group represented by the general formula: ═C(Rb)—; when is a single bond, W1 is a group represented by the general formula: —C(Raa)(Rab)— or a group represented by the general formula: —(C═O)—, and W2 is a group represented by the general formula: —C(Rba)(Rbb)—, a group represented by the general formula: —(C═O)— or a group represented by the general formula: —N(Rbc)—; W3, W4 and W5 are each independently a nitrogen atom or a methine group and the like that may have a substituent; X is a single bond, an oxygen atom and the like; Y is a single bond or (CRYiRYi′)n; and Z is a hydroxyl group or COOR2 and the like.
The present invention relates to a compound that has URAT1 inhibitory action, and a URAT1 inhibitor, a blood uric acid level-reducing agent and a pharmaceutical composition comprising the compound. More specifically, the present invention relates to a compound represented by Formula (I) below.
[in the formula,
R
1
is -Q
1
-A
1
and the like;
is a double bond or a single bond; when
is a double bond, W
1
is a nitrogen atom or a group represented by the general formula: ═C(R
a
)—, and W
2
is a nitrogen atom or a group represented by the general formula: ═C(R
b
)—; when
is a single bond, W
1
is a group represented by the general formula: —C(R
aa
)(R
ab
)— or a group represented by the general formula: —(C═O)—, and W
2
is a group represented by the general formula: —C(R
ba
)(R
bb
)—, a group represented by the general formula: —(C═O)— or a group represented by the general formula: —N(R
bc
)—; W
3
, W
4
and W
5
are each independently a nitrogen atom or a methine group and the like that may have a substituent; X is a single bond, an oxygen atom and the like; Y is a single bond or (CR
Yi
R
Yi′
)
n
; and Z is a hydroxyl group or COOR
2
and the like.