Finding Fragments

Traditionally (i.e., more than a couple of decades ago) active molecules were often found simply by testing them in a biological assay, often in cells or even in animals. As our understanding of biology and our ability to isolate proteins improved, it 

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Finding Fragments Thymidylate Synthase Proof of Principle... 

One of the biggest challenges in fragment-based drug discovery is not finding fragments but linking them. In the case of TS (above), we used structure-based... 

Just to check your skill at finding fragmentations by numbers, draw a mechanism for each of these one-step fragmentations in basic solution (with an acidic work-up). 

In order to find fragments of names, the field Heading Parent (HP) is the adequate field. As explained in Sect. 2.1.3, Chemical Abstracts Service indexes the names with its own rules. The Chemical Substance Index lists them according to their functional parent compound. This makes a query in the HP field a query for a parent compound. Its result will consist of a complete group of compounds, containing this parent compound, regardless of their substituents (Fig. 87). 

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