Simplification of the tetracyclic SIRT1-selective inhibitor MC2141: Coumarin- and pyrimidine-based SIRT1/2 inhibitors with different selectivity profile
摘要:
In this report we describe the synthesis and biological characterization of two series of sirtuins' inhibitors (SIRTi), designed as simplification products of the previously reported SIRT1-selective inhibitor MC2141 (4). In the first series (5a-t) we report a number of 2-substituted-1,2-dihydrobenzo[f] chromen-3-ones with a marked selectivity for the inhibition of SIRT2 over SIRT1. Some of such derivatives showed also high pro-apoptotic (5i and 5l) and/or cytodifferentiating (5d, 5i, and 5o) properties in a human leukemia cell line (U937). The second group of SIRTi (6a-q) is characterized by some analogues of cambinol (3), a well known SIRTi active against the Burkitt lymphoma. Such compounds, differently from the unselective prototype, are endowed with a selective inhibition of SIRT1 over SIRT2, and, in some cases (6j, 6k, and 6q), are more efficient than 3 to induce apoptosis in U937 cells. (C) 2011 Elsevier Ltd. All rights reserved.
2-(溴乙酰基)-3 H-苯并[ f ]香豆素(1)与水杨醛的相互作用得到2-(2-氧代-2-(3 H-苯并[ f ]香豆素-2-基)乙氧基)苯甲醛(2),在回流的二甲基甲酰胺(DMF)中进行自缩合,得到2-(2-苯并呋喃基)-3- H-苯并[ f ]香豆素(3)。用邻氨基苯硫酚(4)处理1得到2-(2-(((2-氨基苯基)硫代)乙酰基)-3- H-苯并[ f ]香豆素(5)。DMF中5的回流导致形成2-(4H- [1,4]-苯并噻嗪-3-基)-3 H-苯并[ f ]香豆素(6)。的治疗1与芳基胺图7a-d在沸腾的DMF,得到1-芳基-3-羟基苯并[5,6]吡喃并[4,3 b ]吡咯-4-(1 ħ) -酮(10A-d )。 11与邻苯二胺的缩合得到2-(2-甲基-2,3-二氢-1 H-苯并咪唑-2-基)-3 H-苯并[ f ]香豆素(12)。2-乙酰基-3 H-苯并[ f ]香豆素的相互作