New thiopyrazolo[3,4-d]pyrimidine derivatives as anti-mycobacterial agents
摘要:
The multiple parallel synthesis of a series of N,S-bis-alkylated thiopyrazolo[3,4-d]pyrimidines, based on sequential S- then N-alkylation, is reported. These compounds showed significant anti-mycobacterial activity (MICs down to < 2 mu/ml) and their potential as significant drug-like leads is substantiated through cytotoxicity evaluation and in silico profiling. (c) 2007 Elsevier Ltd. All rights reserved.
2-[(3-Pyridinylmethyl)thio]pyrimidine derivatives (1a-n) promote the excretion of phenol red into the mouse trachea, indicating an increased tracheobronchial secretion. Furthermore, 2-[(3-pyridinylmethyl)thio]pyrimidine (1a) (tasuldine) produces greater excretion of phenol red into the mouse trachea after systemic administration than the known bronchosecretolytic ambroxol. Compound 1a also reduces the viscosity of canine bronchial mucus. Compound 1a has been selected for clinical investigations.