PubMed · 6646207
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R H Pain. Dressing the SOD.. https://doi.org/10.1038/306228a0
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The structure-activity relationships (SAR) of a novel class of Src SH2 inhibitors are described. Variation at the pY+1 and pY+3 side chain positions using 2,4- and 2,5-substituted thiazoles and 1,2,4-oxadiazoles as scaffolds resulted in inhibitors that bound as well as the standard tetrapeptide Ac-pYEEI-NH2.
A novel series of benzo[b]thiophene diamine thrombin inhibitors with a conformationally restricted C3-side chain 3 was investigated. The constrained C3-side chain by a cyclohexyl ring contributed to not only an additive but also a synergistic effect on the thrombin inhibitory activity. The SAR studies resulted in the discovery of a potent thrombin inhibitor 27 that was over 750-fold more potent than the initial lead compound 1.
Quantitative structure-activity relationships (QSAR) have found wide use in correlating the bioactivity of all kinds of organic compounds with all kinds of biological entities. So many QSAR have been published that it is time for a new phase of study, that of comparative QSAR. From our current database of about 6000 QSAR illustrative examples are discussed.