申请人:Industry-Academic Cooperation Foundation, Yonsei University
公开号:US20140378399A1
公开(公告)日:2014-12-25
The present disclosure relates to a novel vascular leakage inhibitor. The novel vascular leakage inhibitor of the present invention inhibits the apoptosis of vascular endothelial cells, inhibits the formation of actin stress fibers induced by VEGF, and enhances the cortical actin ring structure, thereby inhibiting vascular leakage. Accordingly, the vascular leakage inhibitor of the present invention can prevent or treat various diseases caused by vascular leakage. Since the vascular leakage inhibitor of the present invention is synthesized from commercially available or easily synthesizable pregnenolones, it has remarkably superior feasibility of commercial synthesis.
Catalytic Cascade Access to Biaryl-2-Methyl Acetates from Pyruvate<i>O</i>-Arylmethyl Ketoximes<i>via</i>the Palladium-Catalyzed C(<i>sp</i><sup>2</sup>)H Bond Arylation and C−O Bond Solvolysis
作者:Ling-Yan Shao、Li-Hao Xing、Ying Guo、Kun-Kun Yu、Wei Wang、Hong-Wei Liu、Dao-Hua Liao、Ya-Fei Ji
DOI:10.1002/adsc.201800216
日期:2018.8.6
A catalytic cascade has been developed for the synthesis of biaryl‐2‐methyl acetates via a palladium‐catalyzed ortho‐C(sp2)−H bond arylation of pyruvate O‐arylmethyl ketoximes with aryl iodides followed by a solvolysis, in which the pyruvic ketoxime ester as a new auxiliary is employed to direct the C(sp2)−H bond activation. The straightforward treatment of O‐arylmethyl hydroxylamines and ethyl pyruvate
Direct Transformation of directing group to important synthetic units would provide a high atom efficiency synthetic approach in synthetic chemistry. Herein, a convenient protocol in synthesis of o-aminobenzaldehyde and benzoxazole...
Synthesis, Crystal Structure, Herbicidal Activity, and SAR Study of Novel <i>N</i>-(Arylmethoxy)-2-chloronicotinamides Derived from Nicotinic Acid
作者:Chen-Sheng Yu、Qiao Wang、Joanna Bajsa-Hirschel、Charles L. Cantrell、Stephen O. Duke、Xing-Hai Liu
DOI:10.1021/acs.jafc.0c07538
日期:2021.6.16
animals. To discover novel natural-product-based herbicides, a series of N-(arylmethoxy)-2-chloronicotinamides were designed and synthesized. Some of the new N-(arylmethoxy)-2-chloronicotinamides exhibited excellent herbicidalactivity against Agrostis stolonifera (bentgrass) at 100 μM. Compound 5f (2-chloro-N-((3,4-dichlorobenzyl)oxy)nicotinamide) possessed excellent herbicidalactivity against Lemna paucicostata
Stepwise treatment of ortho-hydroxy-arenonitriles with 1,1′-carbonyl-di-(1,2,4-triazole) and O-substituted hydroxylamines in the presence of Et3N gave 4-methoxy(aralkoxy)imino-benzo[1,3]oxazin-2-ones and 4-methoxy(aralkoxy)imino-naphtho[2,3-e][1,3]oxazin-2-ones.