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• W2073510961 abstract "Abstract A SAR translation strategy adopted for the discovery of tetrahydroisoquinolinone (THIQ)‐based steroidomimetic microtubule disruptors has been extended to dihydroisoquinolinone (DHIQ)‐based compounds. A steroid A,B‐ring‐mimicking DHIQ core was connected to methoxyaryl D‐ring mimics through methylene, carbonyl, and sulfonyl linkers, and the resulting compounds were evaluated against two cancer cell lines. The carbonyl‐linked DHIQs in particular exhibit significant in vitro antiproliferative activities (e.g., 6‐hydroxy‐7‐methoxy‐2‐(3,4,5‐trimethoxybenzoyl)‐3,4‐dihydroisoquinolin‐1(2 H )‐one ( 16 g ): GI 50 51 n M in DU‐145 cells). The broad anticancer activity of DHIQ 16 g was confirmed in the NCI 60‐cell line assay giving a mean activity of 33 n M . Furthermore, 6‐hydroxy‐2‐(3,5‐dimethoxybenzoyl)‐7‐methoxy‐3,4‐dihydroisoquinolin‐1(2 H )‐one ( 16 f ) and 16 g and their sulfamate derivatives 17 f and 17 g (2‐(3,5‐dimethoxybenzoyl)‐7‐methoxy‐6‐sulfamoyloxy‐3,4‐dihydroisoquinolin‐1(2 H )‐one and 7‐methoxy‐2‐(3,4,5‐trimethoxybenzoyl)‐6‐sulfamoyloxy‐3,4‐dihydroisoquinolin‐1(2H)‐one, respectively) show excellent activity against the polymerization of tubulin, close to that of the clinical combretastatin A‐4, and bind competitively at the colchicine binding site of tubulin. Compounds 16 f and 17 f were also shown to demonstrate in vitro anti‐angiogenic activity. Additionally, X‐ray and computational analyses of 17 f reveal that electrostatic repulsion between the two adjacent carbonyl groups, through conformational biasing, dictates the adoption of a “steroid‐like” conformation that may partially explain the excellent in vitro activities." @default.
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• W2073510961 date "2014-03-05" @default.
• W2073510961 modified "2023-10-17" @default.
• W2073510961 title "Synthesis, Anti‐tubulin and Antiproliferative SAR of Steroidomimetic Dihydroisoquinolinones" @default.
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• W2073510961 doi "https://doi.org/10.1002/cmdc.201400017" @default.
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