Re: [Rdkit-discuss] Canonical smiles for medium and large rings?

2011-01-04 Thread James Davidson
Hi Greg, On Sat, Dec 18, 2010 at 6:27 AM, Greg Landrum greg.land...@gmail.com wrote: I just checked in a set of changes that should get this (mostly) working correctly. Here's a demonstration with Geldanamycin: In [7]:

Re: [Rdkit-discuss] Canonical smiles for medium and large rings?

2010-12-28 Thread Greg Landrum
On Sat, Dec 18, 2010 at 6:27 AM, Greg Landrum greg.land...@gmail.com wrote:  For 'classic' aliphatic systems, double-bonds in 3-7-membered rings can only sensibly exist in the cis orientation, so 'ignoring' them would be ok.  However, for 8-membered and above, cis or trans are certainly

[Rdkit-discuss] Canonical smiles for medium and large rings?

2010-12-17 Thread James Davidson
Dear All, I have been investigating an issue that a colleague of mine identified. He was working with the RDKit Canon Smiles node in Knime, and found that for the natural product, Geldanamycin, the double-bond geometry information was being lost during canonicalisation. I repeated this result