Design, synthesis, and evaluation of N-phenyl-4-(2-phenylsulfonamido)-benzamides as microtubule-targeting agents in drug-resistant cancer cells, displaying HDAC inhibitory response
摘要:
Microtubule-targeting agents (MTA) have enjoyed significant clinical success for decades. However, several mechanisms may cause inactivation of such drugs, leading to acquired resistance in patients treated with them. Therefore, drugs containing a stilbene-like skeleton and possessing dual inhibitory activity may provide a new and differentiated treatment for patients to overcome challenging acquired resistance. A new compound (16c) displays promising anticancer activity with GI(50) of 22 +/- 2 and 12 +/- 0.1 nM in vincristine-resistant nasopharyngeal (KB-Vin) cancer cells and etoposide-resistant nasopharyngeal (KB-7D) cancer cells and is better than vincristine, etoposide, ABT-751, and MS-275. A mechanistic study revealed that 16c interferes with the cell cycle distribution and induces cell cycle arrest at the G2/M phase and severe mitotic spindle defects followed by apoptosis. In addition, it produces much more significant cytotoxicity than vincristine and etoposide in the corresponding resistant cells, indicating that it may be a promising candidate to overcome drug resistance in cancer cells. Compound 16c also displays inhibitory activity against HDAC 1 and HDAC 2 with IC50 values of 1.07 mu M, and 1.47 mu M, respectively. These findings may lead to a new type of structural motif for future development of drugs that could overcome acquired resistance to MTAs. (c) 2020 Published by Elsevier Masson SAS.
It is an object of the present invention to provide an excellent method for producing an excellent therapeutic agent.
The solution of the present invention is as shown in the following scheme:
wherein R
1
represents a C1-C6 alkyl group, R
2
represents a C1-C6 alkyl group, and R
3
represents a C1-C6 alkyl group.
It is an object of the present invention to provide a medicament for preventing or treating hyperphosphatemia. Solution: A compound represented by a general formula (I) or a pharmacologically acceptable salt thereof. [In the formula, R
1
: a methyl group or the like, R
2
: a hydrogen atom or the like, R
3
: a hydrogen atom or the like, A: a cyclohexyl ring or the like, X: CH or the like, Y: CH or the like, Z: CH or the like, and n: 2 or the like.]
[Problem] To provide a compound that has an intestinal phosphate transporter (NPT-IIb) inhibitory action and is useful as an active ingredient of an agent for treating and/or preventing hyperphosphatemia.
[Means for Solution] The present inventors conducted their studies on a compound that has an NPT-IIb inhibitory action and is useful as an active ingredient of an agent for treating and/or preventing hyperphosphatemia. As a result, they created an aminoalkyl-substituted N-thienylbenzamide derivative which has NPT-IIb inhibitory action, thereby completing the present invention. The aminoalkyl-substituted N-thienylbenzamide derivative of the present invention has an NPT-IIb inhibitory action and can be used as an agent for preventing and/or treating hyperphosphatemia.