Testosterone (and steroids) naming

User 646de8ab9c

18-05-2016 08:06:56

Hi all,


I tried to use the naming function for steroids compounds and I obtain non-common IUPAC name. So I try to name Testosterone and I obtain this (with the new analysis box) :



You can remark that even the traditional name is not "Testosterone".


If I look at Chemspider (http://www.chemspider.com/Chemical-Structure.5791.html), or Pubchem (for example), or if I use the naming function of ISIS; I obtain this more typical IUPAC name:


(8R,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one


 


Can you explain me the rules you are using for the naming of such compounds?


Thanks in advance,


Lionel


 

ChemAxon e7b9408ca1

18-05-2016 09:57:41

Bonjour Lionel,


Thank you for your question. The name generated is indeed not the preferred name for such compound. It uses an alternative nomenclature (Von Bayer bridged cycles), which does represent the structure, but in a more complicated way. We plan to improve this in the future. This limitation is listed in the current limitations in the Structure to Name User Guide:



In any case, the traditional name should be testosterone, we are investigating why this is not the case here.


Best regards,


Daniel



User 646de8ab9c

18-05-2016 10:08:36

Bonjour Daniel,


Sorry I did not look at the guide before...


Thanks for your feedback and for investigating the "traditional name".


Lionel