Cytoprotective Effects Evaluation of a Novel Danshensu Derivative DEX-018 against Oxidative Stress Injury in HUVECs
摘要:
Ischemic heart disease (H-ID) is one of the most common cardiovascular diseases with high morbidity and mortality. Danshensu (DSS) is widely used in the treatment of coronary heart disease. In this study, the carboxy group of DSS was esterified with edaravone to synthesize the novel DSS derivative DEX-018 to achieve a synergistic protective effect and overcome the structural deficiency of DSS. The pharmacological effect of DEX-018 against tert-butyl hydrogen peroxide (t-BHP) induced oxidative damage in human umbilical vein endothelial cells (HUVECs) was evaluated. The results demonstrated that pretreatment with DEX-018 significantly increased cell viability and superoxide dismutase (SOD) activity and decreased the lactate dehydrogenase (LDH) leakage rate, malondialdehyde (MDA) level and intracellular reactive oxygen species (ROS) level. In addition, DEX-018 inhibited cell apoptosis and reversed the expression of apoptosis-related proteins (BcI-2, Bax, and caspase-3) in HUVECs stimulated by t-BHP Further study on the mechanism of DEX-018 revealed that the expression of p-Akt and p-extracellularsignal-regulated kinase 1/2 (ERK1/2) was increased, which suggested that DEX-018 may protect HUVECs against t-BHP induced oxidative injury viu the Akt and ERK1/2 signaling pathways. To further validate the correlation, CCK8 was used to detect cell viability after treatment with DEX-018 plus Akt inhibitor (MK2206) and phosphadylinositol 3-kinase (P13K) inhibitor (LY294002). Compared with DEX-018 alone, MK2206 or LY294002 significantly decreased cell viability of HUVECs, indicating that the protective effect of DEX-018 against t-BHP induced oxidative injury was significantly weakened. It was further verified that the antioxidant and anti-apoptotic effects of DEX-018 were partly related to the PI3K Akt signaling pathway.
Synthesis and Biological Evaluation of Danshensu and Tetramethylpyrazine Conjugates as Cardioprotective Agents
作者:Yingfei Wang、Xiaojing Zhang、Changjiang Xu、Gaoxiao Zhang、Zaijun Zhang、Pei Yu、Luchen Shan、Yewei Sun、Yuqiang Wang
DOI:10.1248/cpb.c16-00839
日期:——
efficacy and improve their drugability, in this work, we designed new DSS and TMP conjugates. Their water solubility and protective effects were studied in vitro and in experimental animal models. The new compounds demonstrated higher activities than the positive control agents acetylated danshensu and tetramethylpyrazine conjugate (ADTM) and salvianolic acid B (SAB) in preventing cells from oxidative insult
Pyrazine derivative, and preparation method and medical use thereof
申请人:GUANGZHOU MAGPIE PHARMACEUTICALS CO., LTD.
公开号:US20190276413A1
公开(公告)日:2019-09-12
The present invention relates to a pyrazine derivative, and preparation method and medical use thereof. The pyrazine derivative can remove free radicals and suppress calcium overload and has cytoprotective effects, and can be used for the prevention and treatment of cardiovascular and cerebrovascular diseases, neurodegenerative diseases and other related diseases.
Ten novel danshensu alkamine derivatives were synthesized and the preliminary biological activity of these complexes were investigated. The bioassay results indicated that some of derivatives exhibit significant activities on protecting hypoxic H9C2 cardiomyocytes.
(+)-Salvianolic acid A, one of the most active components in the traditional Chinese medicine Danshen, has been synthesized over 10 steps in 6.5% overall yield. Starting from inexpensive ortho-vanillin and sodium Danshensu (synthesized via asymmetric catalysis in our group), the process consists of the following: A Wittig reaction that gives the desire product with absolute E-configuration, a demethylation
An efficient synthetic pathway for the totalsynthesis of salvianolic acid N has been reported. The key reaction steps, the Wittig reaction for Z-stereoselectivity and an intramolecular cyclization for a seven membered ring skeleton, have been optimized to improve the synthetic feasibility and provide the best conditions in terms of yield. Moreover, a notable reaction is the reaction of the deprotected