Structure–Activity Relationship Study of QL47: A Broad-Spectrum Antiviral Agent
摘要:
Here we report the structure activity relationship (SAR) investigations of QL-XII-47 (QL47), a compound that possesses broad-spectrum antiviral activity against dengue virus and other RNA viruses. A medicinal chemistry campaign initiated from QL47, a previously reported covalent BTK inhibitor, to derive YKL-04-085, which is devoid of any kinase activity when screened against a panel of 468 kinases and with improved pharmacokinetic properties. Both QL47 and YKL-04-085 are potent inhibitors of viral translation and exhibit cellular antiviral activity at 35-fold lower concentrations relative to inhibition of host-cell proliferation.
Ruthenium-Catalyzed Atropoenantioselective Synthesis of Axial Biaryls via Reductive Amination and Dynamic Kinetic Resolution
作者:Donghui Guo、Jianwei Zhang、Bei Zhang、Jian Wang
DOI:10.1021/acs.orglett.8b02785
日期:2018.10.5
via a cascade transfer hydrogenation and dynamic kinetic resolution strategy is described. This protocol features broad substrate scope and good functional group tolerance and allows the rapid assembly of axially chiral biaryls in good to high yields with high to excellent enantioselectivities. In addition, such structural motifs may have potential applications in enantioselective catalysis as chiral
The present invention relates to a novel cercosporamide derivative, a pharmacologically acceptable salt thereof or an ester thereof which has an excellent hypoglycemic effect and is useful as a therapeutic and/or prophylactic agent for diabetes.
A cercosporamide derivative having the general formula (I):
[wherein X represents an oxygen atom or the like, R
1
represents a hydrogen atom or a C
1
-C
6
alkyl group, R
2
represents a hydrogen atom, a C
1
-C
6
alkyl group or a C
1
-C
6
halogenated alkyl group, R
3
represents a hydrogen atom or a C
1
-C
6
alkyl group, R
4
represents a C
6
-C
10
aryl group which may be substituted with one to five group(s) independently selected from Substituent Group a, or the like, n represents 1, 2 or 3, and Substituent Group a represents a halogen atom, a C
1
-C
6
alkyl group, a C
1
-C
6
halogenated alkyl group, a C
2
-C
6
alkenyl group, a C
2
-C
6
alkynyl group, a C
1
-C
6
alkoxy group, a C
1
-C
6
halogenated alkoxy group, a C
2
-C
6
alkenyloxy group, a C
2
-C
6
alkynyloxy group and the like], a pharmacologically acceptable salt thereof or an ester thereof.
Organocatalytic Approach for the Synthesis and Biological Studies of Naphthalene Fluorescent Probe through Hydrogen Transfer Reaction
作者:Madan Sau、Sapana Dubey、Jigyansa Sahoo、Gokarneswar Sahoo、Pragya Trivedi、Avijit Jana、Subhankar Samanta、Tapas Das
DOI:10.1002/ejoc.202201188
日期:2022.12.12
Herein we report an organocatalytic synthesis of highly fluorescent naphthalene derivatives through hydrogen atom transfer featuring neat and mild reaction conditions under air with high substrate tolerance along with atom economy by the unprecedented use of DBU, where oxidation and reduction occurred in one-pot. Synthesized compounds are utilized in photophysical studies, cytotoxic studies and cell
Synthesis of Multifused Pyrrolo[1,2-<i>a</i>]quinoline Systems by Tandem Aza-Michael–Aldol Reactions and Their Application to Molecular Sensing Studies
Herein, we have presented a weak acid-promoted tandemaza-Michael–aldol strategy for the synthesis of diversely fused pyrrolo[1,2-a]quinoline (tricyclic to pentacyclic scaffolds) by the construction of both pyrrole and quinoline ring in one pot. The described protocol fabricated two C–N bonds and one C–C bond in the pyrrole-quinoline rings which have been sequentially formed under transition-metal-free
在此,我们提出了一种弱酸促进的串联氮杂-迈克尔-醛醇策略,通过在一锅中构建吡咯和喹啉环来合成不同稠合的吡咯并[1,2- a ]喹啉(三环至五环支架) . 所描述的方案在吡咯-喹啉环中制造了两个 C-N 键和一个 C-C 键,这些环是在无过渡金属的条件下通过挤压环保水分子依次形成的。按照目前的方案合成了酮咯酸药物类似物,其中一种合成的三环吡咯并 [1,2- a ] 喹啉荧光团已用于通过荧光猝灭效应检测剧毒苦味酸。