Hi Tim,

Greg posted a gist on how to generate R-group matrices shortly before.
https://sourceforge.net/p/rdkit/mailman/message/36744886/
Does it help?

Hongbin Yang

发件人: Tim Dudgeon
发送时间: 2019年8月26日 21:08
收件人: rdkit-discuss@lists.sourceforge.net
主题: [Rdkit-discuss] Generating R-group representation

I have a set of molecules that share a common scaffold and differ by 
substitution at a small number of sites (typically one or two).
I'd like to generate a generic R-group molecule that summarises the 
molecules (e.g. showing the scaffold with the sites of substitution as 
R1, R2 etc.).

Finding the MCS of such a set of molecules with RDKit seems straight 
forward, but the output of that is a SMARTS expression for the MCS.
Does anyone have any examples (or hints) of using this to generate a 
R-group representation?

Tim



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