Photodynamic therapy (PDT) employing exogenous photosensitizers is currently being approved for treatment of basal cell carcinoma (BCC). 2-(4-Aminophenyl)benzothiazoles (6) consist of chromophoric structure and absorb light in the UVA (315–400 nm). These results encouraged us to design and synthesize a diversity of 2-phenylbenzothiazoles (6). Studies on the apoptotic mechanism involved in photosensitive effects
Synthesis of Sulfur−Sulfur Bond Formation from Thioamides Promoted by 2,3-Dichloro-5,6-dicyanobenzoquinone
作者:Wei-Sheng Lo、Wan-Ping Hu、Hsiao-Ping Lo、Chung-Yu Chen、Chai-Lin Kao、Jaya Kishore Vandavasi、Jeh-Jeng Wang
DOI:10.1021/ol102455x
日期:2010.12.3
A mild and efficient synthesis of sulfur-sulfur bond formation from thioformanilides with 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) is described. Functionality on the aromatic ring plays a key role in the formation of a sulfur-sulfur bond.
Synthesis and biological evaluation of thiobenzanilides as anticancer agents
作者:Wan-Ping Hu、Hsin-Su Yu、Yan-Ren Chen、Yi-Min Tsai、Yin-Kai Chen、Chao-Cheng Liao、Long-Sen Chang、Jeh-Jeng Wang
DOI:10.1016/j.bmc.2008.03.003
日期:2008.5
A series of novel thiobenzanilides is described. These compounds have been previously found to show strong biological activity such as antimycotic and antifungal actions. This is the first demonstration on the mechanism of the anticancer effect of thiobenzanilide agents (4a-c) on human melanoma A375 cells. The cytotoxic studies of compounds 4a-c on human melanoma A375 cells indicate thiobenzanilides induced higher cytotoxicity than nitrobenzanilides (3a-c). In addition, DNA flow cytometric analysis shows that 4a-c displays a significant G2/M phase arrest, which progresses to early apoptosis as detected by flow cytometry after double-staining with annexin V and propidium iodide (PI). Because cellular apoptosis is often preceded by the disruption of mitochondrial function, the assessment of mitochondrial function in 4a-c-treated cells is worthy of investigation. Our data revealed that treatment of A375 cells with 4a-c resulted in the loss of mitochondrial membrane potential (Delta Psi(mt)), a reduction of ATP synthesis, increased reactive oxygen species (ROS) generation, and activation of caspase-3. Thus, we suggest that 4a-c agents are potent inducers of cell apoptosis in A375 cells. (C) 2008 Elsevier Ltd. All rights reserved.
SYNTHESIS OF 2-(4-AMINOPHENYL)BENZOTHIAZOLE DERIVATIVES AND USE THEREOF
申请人:KAOHSIUNG MEDICAL UNIVERSITY
公开号:US20140046290A1
公开(公告)日:2014-02-13
The present invention provides a photodynamic therapy to a patient having at least one tumor comprising the steps of: administering a compound of formula 6 (wherein R
1
and R
2
are defined as the above) in a pharmaceutically acceptable carrier to the patient; waiting for a sufficient time to allow the administered compound to be taken up by a target tissue having the at least one tumor; and irradiating a region of the patient containing the target tissue, wherein growth of the tumor is inhibited.