Design, synthesis and potent cytotoxic activity of novel 7-( N -[(substituted-sulfonyl)piperazinyl]-methyl)-camptothecin derivatives
摘要:
In an effort to discover potent camptothecin-derived antitumor agents, novel camptothecin analogues with sulfonylpiperazinyl motifs at position-7 were designed and synthesized. They were evaluated for in vitro cytotoxicity with the sulforhodamine-B (SRB) method in five types of human tumor cell lines, A-549, MDA-MB-231, KB, KB-VIN and MCF-7. With IC50 values in the low mu M to nM level, most of the new analogues showed greater cytotoxicity activity than the reference compounds irinotecan and topotecan. Furthermore, compounds 121 (IC50, 1.2 nM) and 12k (IC50, 20.2 nM) displayed the highest cytotoxicity against the multidrug-resistant (MDR) KB-VIN cell line and merit further development as preclinical drug candidates for treating cancer, including MDR phenotype. Our study suggested that integration of sulfonylpiperazinyl motifs into position-7 of camptothecin is an effective strategy for discovering new potent cytotoxic camptothecin derivatives. (C) 2017 Elsevier Ltd. All rights reserved.
Heterocyclic compounds as Wee1 inhibitors are provided. The compounds may find use as therapeutic agents for the treatment of diseases and may find particular use in oncology.
early study on the structural modifications of clioquinol, more 8-hydroxyquinoline-derived Mannichbases were synthesized and examined for growth-inhibitory effect. Taken Mannich base 1 as our lead compound, upon replacement of either sulfonyl group with methylene group or piperazine ring with ethylenediamine group resulted in an appreciable increase in potency. On the other hand, as 8-hydroxyquinoline
Heterocyclic compounds derived from benzotriazine, triazines, triazoles and oxadiazoles are disclosed. The methods of synthesis and of use of such heterocyclic compounds are also provided.
本文揭示了从苯并三嗪、三嗪、三唑和噁二唑衍生的杂环化合物。还提供了这些杂环化合物的合成和使用方法。
TYPE II RAF KINASE INHIBITORS
申请人:Gray Nathanael S.
公开号:US20130040949A1
公开(公告)日:2013-02-14
The present invention relates to novel compounds which are able to modulate b-raf kinases, and the use of such compounds in the treatment of various diseases, disorders or conditions.
本发明涉及一种新的化合物,能够调节B-raf激酶,并将这种化合物用于治疗各种疾病,障碍或病况。
Heterocyclic compounds and uses thereof
申请人:NUVATION BIO INC.
公开号:US10807994B2
公开(公告)日:2020-10-20
Heterocyclic compounds of Formula (I):
as Wee1 inhibitors are provided. The compounds may find use as therapeutic agents for the treatment of diseases and may find particular use in oncology.