在DMF中K 2 CO 3存在下,4-溴-NH -1,2,3-三唑2与烷基卤的反应在区域选择性中产生了相应的2-取代的4-溴-1,2,3-三唑5过程。这些溴化物的随后的Suzuki交叉偶联反应提供了2,4,5-三取代的三唑3的有效合成。另外,通过氢化还原溴代三唑提供了2,4-二取代的三唑8的有效合成。
Base-Induced Highly Regioselective Synthesis of <i>N</i><sup>2</sup>-Substituted 1,2,3-Triazoles under Mild Conditions in Air
作者:Jian Ji、Cong Guan、Qinghua Wei、Xuwen Chen、Yun Zhao、Shunying Liu
DOI:10.1021/acs.orglett.1c03743
日期:2022.1.14
We developed a highly regioselective base-induced synthesis of N2-substituted 1,2,3-triazoles from N-sulfonyl-1,2,3-triazoles and alkyl bromides/alkyl iodides at room temperature. We propose an SN2-like mechanistic pathway to explain the high N2-regioselectivity. The protocol features a broad substrate scope and generates products in good to excellent yields (72–90%).
我们开发了一种在室温下由N-磺酰基-1,2,3-三唑和烷基溴/烷基碘合成N 2 -取代的 1,2,3-三唑的高度区域选择性碱诱导合成。我们提出了一种类似 S N 2 的机制途径来解释高N 2区域选择性。该协议具有广泛的底物范围,并以良好的产量产生产品 (72–90%)。
TRIAZOLYL ACYCLIC HEPATITIS C SERINE PROTEASE INHIBITORS
申请人:Sun Ying
公开号:US20080038225A1
公开(公告)日:2008-02-14
The present invention relates to compounds of Formula I or II, or pharmaceutically acceptable salts, esters or prodrugs thereof:
which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering to the subject a pharmaceutical composition comprising a compound of the present invention.
The first example of tetrazole‐directed meta‐selective C−H nitration is described. This transformation provided a straightforward approach for the synthesis of biologically important m‐nitroaryltetrazoles in moderate to excellent yields with good functional group compatibility. In addition, new metallo‐β‐lactamase inhibitors were obtained by further transformation of the synthesized m‐nitroaryltetrazoles
Rational Design of 4-Aryl-1,2,3-Triazoles for Indoleamine 2,3-Dioxygenase 1 Inhibition
作者:Ute F. Röhrig、Somi Reddy Majjigapu、Aurélien Grosdidier、Sylvian Bron、Vincent Stroobant、Luc Pilotte、Didier Colau、Pierre Vogel、Benoît J. Van den Eynde、Vincent Zoete、Olivier Michielin
DOI:10.1021/jm300260v
日期:2012.6.14
Indoleamine 2,3-dioxygenase 1 (IDO1) is an important therapeutic target treatment of diseases such as cancer that involve pathological immune escape. Starting from the scaffold of our previously discovered IDO1 inhibitor 4-phenyl-1,2,3-triazole, we used computational structure-based methods to design more potent ligands. This approach yielded highly efficient low molecular weight inhibitors, the most active being of nanomolar potency both in an enzymatic and in a cellular assay, while showing no cellular toxicity and a high selectivity for IDO1 over tryptophan 2,3-dioxygenase (TDO). A quantitative structure-activity relationship based on the electrostatic ligand-protein interactions in the docked binding modes and on the quantum chemically derived charges of the triazole ring demonstrated a good explanatory power for the observed activities.