E/Z stereochemistry error in sketch

User b91dd8facf

18-08-2009 13:04:14

 I draw a compound with E/Z double bonds in MarvinSketch (5.2.4)


C=C1CCCC\C1=[CH:6]\[CH:7]=[C:8]1/CCCC2CCCC12


than I add a Hydroxygroup, and copy the resulting structure as smiles I get the following wrong smiles:


O[C@@H]1CCC(=C)\C(C1)=[CH:6]/[CH:7]=[C:8]1\CCCC2CCCC12


which does not reproduce what I have drawn...here the E Z is converted "automatically" to E E....


 


cheers


Lutz

ChemAxon 990acf0dec

19-08-2009 13:09:18

Hi Lutz,


This topic is assigned to Andris, because he is the expert in the SMILES generation, but I just realized he is on holiday this week. Is it enough to get the answer early next week?


Best regards,


Akos

ChemAxon 25dcd765a3

24-08-2009 08:33:33

Hi Lutz,


 


It seems to be a bug.


I'll investigate it.


Andras

ChemAxon 25dcd765a3

24-08-2009 11:26:32

Hi,


The generated smiles is correct.


The clean2D algorithm generates the coordinates incorrectly regarding to the stereoinformations.


I'll fix it.


Andras

ChemAxon 25dcd765a3

16-09-2009 10:00:03

Hi Lutz,


I have fixed the cleaning problem. Marvin 5.3 will contain the fix.


Thank you for the report.


Andras