Hello,
I would like to write a SMARTS that will match all of the individual atoms
in all possible heteroaromatic rings. Does anyone know of an elegant,
compact way to do this?
If one SMARTS will not work, I can concatenate SMARTS using
a vertical pipe, "|", as I proposed in an earlier message in this forum.
I am (perhaps) expecting SMARTS something like
[c]1[c][n][c][c]1
etc
[c]1[c][c][c][c][c]1
[c]1[c][n][c][c][c]1
etc.
Perhaps there is a very elegant way to specify the possible
patterns. I can't think of a way to do it, other than exhaustive
enumeration.
Any ideas?
Regards,
Jim Metz
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