Benzothiazinones: A Novel Class of Adenosine Receptor Antagonists Structurally Unrelated to Xanthine and Adenine Derivatives
作者:Michael Gütschow、Miriam Schlenk、Jürgen Gäb、Minka Paskaleva、Mohamad Wessam Alnouri、Silvia Scolari、Jamshed Iqbal、Christa E. Müller
DOI:10.1021/jm300029s
日期:2012.4.12
related thienothiazinones were identified as structurally novel antagonists at adenosine receptors (ARs). 6-Methyl-2-benzoylamino-4H-3,1-benzothiazin-4-one (10d) was found to be a balanced AR antagonist with affinity for all human (h) subtypes (Ki hA1 65.6 nM; hA2A 120 nM; hA2B 360 nM; hA3 30.4 nM), while in rat (r), 10d was a highly potent A1-selective antagonist (rA1 7.7 nM; rA2A 546 nM; rA2B 679 nM, rA3
2-(酰基)氨基-4 H -3,1-苯并噻嗪-4-酮和相关的噻吩并噻嗪酮被认为是腺苷受体(ARs)上结构上新颖的拮抗剂。发现6-甲基-2-苯甲酰氨基-4 H -3,1-苯并噻嗪-4-酮(10d)是一种平衡的AR拮抗剂,对所有人类(h)亚型均具有亲和力(K i hA 1 65.6 nM; hA 2A 120 nM; hA 2B 360 nM; hA 3 30.4 nM),而在大鼠(r)中,10d是一种高效的A 1选择性拮抗剂(rA 1 7.7 nM; rA 2A 546 nM; rA 2B 679 nM,rA 3> 10000 nM)。发现2-(4-甲基苯甲酰氨基)-4 H -3,1-苯并噻嗪-4-酮(10 g)是对人A 2A(68.8 nM)和A 3 AR(23.0 nM)的有效拮抗剂,相对于其他人类AR亚型。与A 1和A 3 AR相比,A 2A和A 2B AR可以容忍庞大的2-酰基取代基。叔丁基(4-oxo-4