Solid-Supported Green Synthesis of Substituted Hydrocinnamic Esters by Focused Microwave Irradiation
作者:Vinod Kumar、Anuj Sharma、Arun K. Sinha
DOI:10.1002/hlca.200690049
日期:2006.3
An efficient chemoselective hydrogenation protocol for substituted cinnamic esters is developed for the synthesis in quantitative yield of corresponding bioactive dihydrocinnamic esters with solid-supported palladium chloride/ammonium formate (cat.) in HCOOH/H2O 1 : 2 as a hydrogenating agent under focused-microwave irradiation for 10 min.
开发了一种有效的取代肉桂酸酯的化学选择性氢化方案,用于以定量产率合成相应的生物活性二氢肉桂酸酯,其中在固相负载下,在HCOOH / H 2 O 1:2中加氢氯化钯/甲酸铵(cat。)作为氢化剂。 -微波照射10分钟。
Synthesis of 1,3,4-trisubstituted pyrrolidines as meropenem adjuvants targeting New Delhi metallo-β-lactamase
作者:Wen Bin Jin、Chen Xu、Xiao Lin Qi、Ping Zeng、Wei Gao、Ki Hon Lai、Jiachi Chiou、Edward W. C. Chan、Yun-Chung Leung、Tak Hang Chan、Kwok-Yin Wong、Sheng Chen、Kin-Fai Chan
DOI:10.1039/d0nj06090a
日期:——
A promising NDM-1 inhibitor was discovered by the construction of pyrrolidine library via boric acid-catalyzed 1,3-dipolar cycloaddition and cell-based screens.
Structure-Activity Relationships of Glycogen Phosphorylase Inhibitor FR258900 and Its Analogues: A Combined Synthetic, Enzyme Kinetics, and Computational Study
of L‐malic, 3‐hydroxypentanedioic, and L‐glutamic acids were synthesized as analogues of the natural product glycogenphosphorylase (GP) inhibitor FR258900 (2,3‐bis(4‐hydroxycinnamoyloxy)glutaric acid). These compounds proved practically inactive against rabbitmuscleglycogenphosphorylase b. A structure–activity study involving previously synthesized tartaric acid analogues of FR258900 revealed that
Two naturally occurring acyclic diterpene and norditerpene aldehydes from Tetragonia tetragonoides
作者:Tadashi Aoki、Koji Takagi、Toshifumi Hirata、Takayuki Suga
DOI:10.1016/0031-9422(82)80142-8
日期:1982.1
Abstract In addition to neophytadiene, phytol, methyl (2E)- and (2Z)-3-(4-hydroxy-3-methoxyphenyl) propenates, fatty acid methyl esters and fatty acids,
To improve aqueous solubility and anti-ischemic activity of 3-n-butylphthalide (NBP), we designed and synthesized the ring-opened derivative of NBP-ferulic acid-glucose trihybrids (S1-S8). These hybrids inhibited adenosine diphosphate (ADP)- or arachidonic acid (AA)-induced platelet aggregation, among them, S2 was 30-fold more water-soluble, and over 10-fold more potent in inhibition of platelet aggregation, as well as reduced ROS generation and protected primary neuronal cells from OGD/R-induced damage, in comparison with NBP. Additionally, S2 was more active than its three moieties alone or in combination, suggesting that the activity of S2 may be attributed to the synergistic effects of these moieties. Importantly, in vivo studies indicated that S2 not only possessed good pharmacokinetic profile, but also improved NBP distribution in rodent brain, suggesting that the glucose moiety in S2 may be recognized by glucose transporter 1 (GLUT1) on blood-brain barrier (BBB), promoting it to penetrate through BBB. Our findings suggest that S2 may be a promising candidate for the intervention of ischemic stroke, warranting further study. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.