PROBLEM TO BE SOLVED: To provide prodrugs of stereodefined oligonucleotides to impart additional stability to oligonucleotide molecules in many in-vitro and in-vivo applications.SOLUTION: A nucleic acid prodrug has a structure represented by the formula (1), where each instance of Ba is independently a blocked or unblocked adenine, cytosine, guanine, thymine, uracil or modified nucleobase.
Thiazolidinone CFTR inhibitors with improved water solubility identified by structure–activity analysis
作者:N.D. Sonawane、A.S. Verkman
DOI:10.1016/j.bmc.2008.07.044
日期:2008.9
The thiazolidinone 3-[(3-trifluoromethyl)phenyl]-5-[(4-carboxyphenyl)methylene]-2-thioxo-4-thiazolidinone (CFTRinh-172) inhibits cystic fibrosis transmembrane conductance regulator ( CFTR) chloride channel conductance with submicromolar affinity and blocks cholera toxin-induced intestinal fluid secretion. Fifty-eight CFTRinh-172 analogs were synthesized to identify CFTR inhibitors with improved water solubility, exploring modi. cations in its two phenyl rings, thiazolidinone core, and core-phenyl connectors. Greatest CFTR inhibition potency was found for 3-CF3 and polar group-substituted-phenyl rings, and a thiazolidinone core. Two compounds with similar to 1 mu M CFTR inhibition potency and solubility >180 mu M(>10-fold more than CFTRinh-172) were identified: Tetrazolo-172, containing 4-tetrazolophenyl in place of 4-carboxyphenyl, and Oxo-172, containing thiazolidinedione in place of the thiazolidinone core. These water soluble thiazolidinone analogs had low cellular toxicity. The improved water solubility of Tetrazolo- and Oxo-172 make them potential lead candidates for therapy of secretory diarrheas and polycystic kidney disease. (C) 2008 Elsevier Ltd. All rights reserved.
DOWD, PAUL;CHOI, SEO-CHANG, TETRAHEDRON., 47,(1991) N7, C. 4847-4860
作者:DOWD, PAUL、CHOI, SEO-CHANG
DOI:——
日期:——
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作者:MOLL K. -K.、 DERDULLA H. -J.、 JAUCH R.、 STEINBRECHER M.