Design and synthesis of novel xanthine derivatives as potent and selective A 2B adenosine receptor antagonists for the treatment of chronic inflammatory airway diseases
作者:Sujay Basu、Dinesh A. Barawkar、Vidya Ramdas、Meena Patel、Yogesh Waman、Anil Panmand、Santosh Kumar、Sachin Thorat、Minakshi Naykodi、Arnab Goswami、B. Srinivasa Reddy、Vandna Prasad、Sandhya Chaturvedi、Azfar Quraishi、Suraj Menon、Shalini Paliwal、Abhay Kulkarni、Vikas Karande、Indraneel Ghosh、Syed Mustafa、Siddhartha De、Vaibhav Jain、Ena Ray Banerjee、Sreekanth R. Rouduri、Venkata P. Palle、Anita Chugh、Kasim A. Mookhtiar
DOI:10.1016/j.ejmech.2017.04.014
日期:2017.7
Adenosine induces bronchial hyperresponsiveness and inflammation in asthmatics through activation of A2B adenosine receptor (A2BAdoR). Selective antagonists have been shown to attenuate airway reactivity and improve inflammatory conditions in pre-clinical studies. Hence, the identification of novel, potent and selective A2BAdoR antagonist may be beneficial for the potential treatment of asthma and
腺苷通过激活A2B腺苷受体(A2BAdoR)诱导哮喘患者的支气管高反应性和炎症。临床前研究表明,选择性拮抗剂可减弱气道反应性并改善炎症状况。因此,鉴定出新颖的,有效的和选择性的A2BAdoR拮抗剂可能对哮喘和慢性阻塞性肺疾病(COPD)的潜在治疗是有益的。为此,我们探索了黄嘌呤化学型上的几个丙-2-炔化的C8-芳基或杂芳基取代基,发现1-丙-2-炔基-1H-吡唑-4-基部分在C8位置具有更好的耐受性。化合物59表现出62 nM的结合亲和力(Ki),但是对A2BAdoR的选择性高于其他AdoR。在末端乙炔上掺入取代的苯基可将结合亲和力(Ki)显着提高至<10 nM。探索了在末端苯基上的各种取代以及在N-1和N-3上的不同烷基的取代,以提高A2BAdoR的效力,选择性和溶解性。通常,与对位取代的类似物相比,具有间位取代的苯基的化合物对A2BAdoR的选择性更好。在末端乙炔上尝试了诸如碱性胺(如