2-Arylaminobenzothiazole-arylpropenone conjugates as tubulin polymerization inhibitors
作者:A. V. Subba Rao、Bala Bhaskara Rao、Satish Sunkari、Siddiq Pasha Shaik、Bajee Shaik、Ahmed Kamal
DOI:10.1039/c6md00562d
日期:——
A new series of 2-arylaminobenzothiazole-arylpropenone conjugates were designed based on 5F-203, synthesized and evaluated for their cytotoxic potency as well as inhibition of tubulinpolymerization.
SYNTHESIS OF 2-(4-AMINOPHENYL) BENZOTHIAZOLE DERIVATIVES AND USE THEREOF
申请人:Wang Jeh-Jeng
公开号:US20120215154A1
公开(公告)日:2012-08-23
The present invention provides a method of preparing a compound of formula 6
comprising:
(a) reacting a compound of formula 1
with a compound of formula 2
to form a compound of formula 3
wherein X of formula 2 is Cl or OH;
(b) treating the compound formula 3 with Lawesson's reagent to form a compound of formula 4
(c) reacting a compound of formula 4 with potassium ferricyanide to produce a compound of formula 5
and
(d) performing catalytic reduction of nitro group of the compound of formula 5 with palladium on charcoal to generate the compound of formula 6,
wherein R
1
of formulae 1-6 is H, C
1-10
alkyl, C
1-10
alkoxy or C
1-10
haloalkyl, and R
2
of formulae 1-6 is H or C
1-10
alkyl.
The present invention also 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.
Design, synthesis and antimetastatic evaluation of 1-benzothiazolylphenylbenzotriazoles for photodynamic therapy in oral cancer cells
作者:Gopal Chandru Senadi、Chieh-Ming Liao、Kung-Kai Kuo、Jian-Cheng Lin、Long-Sen Chang、Jeh Jeng Wang、Wan-Ping Hu
DOI:10.1039/c6md00034g
日期:——
We have designed and synthesized a new series of 1-benzothiazolylphenylbenzotriazoles 9a–p and studied their antimetastatic mechanism involved in photosensitive effects induced by UVA in oral cancer cell Ca9-22.
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
Antitumor Benzothiazoles. 8. Synthesis, Metabolic Formation, and Biological Properties of the <i>C</i>- and <i>N</i>-Oxidation Products of Antitumor 2-(4-Aminophenyl)benzothiazoles
作者:Eiji Kashiyama、Ian Hutchinson、Mei-Sze Chua、Sherman F. Stinson、Lawrence R. Phillips、Gurmeet Kaur、Edward A. Sausville、Tracey D. Bradshaw、Andrew D. Westwell、Malcolm F. G. Stevens
DOI:10.1021/jm990104o
日期:1999.10.1
2-(4-Aminophenyl)benzothiazoles 1 and their N-acetylated forms have been converted to C- and N-hydroxylated derivatives to investigate the role of metabolic oxidation in the mode of action of this series of compounds. 2-(4-Amino-3-methylphenyl)benzothiazole (1a, DF 203, NSC 674495) is a novel and potent antitumor agent with selective growth inhibitory properties against human cancer cell lines. Very low IC50 values (<0.1 mu M) were encountered in the most sensitive breast cancer cell lines, MCF-7 and T-47D, whereas renal cell line TK-10 was weakly inhibited by la. Cell lines from the same tissue origin, MDA-MB-435 (breast), CAKI-1 (renal), and A498 (renal), were insensitive to 1a. Accumulation and metabolism of la were observed in sensitive cell lines only, with the highest rate of metabolism occurring in the most sensitive MCF-7 and T-47D cells. Thus, differential uptake and metabolism of 1a by cancer cell lines may underlie its selective profile of anticancer activity. A major metabolite in these sensitive cell lines has been identified as 2-(4-amino-3-methylphenyl)-6-hydroxybenzothiazole (6c). Hydroxylation of 1a was not detected in the homogenate of previously untreated MCF-7, T-47D, and TK-10 cells but was readily observed in homogenates of sensitive cells that were pretreated with 1a. Accumulation and covalent binding of [C-14]1a derived radioactivity was observed in the sensitive MCF-7 cell line but not in the insensitive MDA-MB-435 cell line. The mechanism of growth inhibition by 1a, which is unknown, may be dependent on the differential metabolism of the drug to an activated form by sensitive cell Lines only and its covalent binding to an intracellular protein. However, the 6-hydroxy derivative 6c is not the 'active' metabolite since, like all other C- and N-hydroxylated benzothiazoles examined in this study, it is devoid of antitumor properties in vitro.