260065-80-3

Upstream product

• 108-05-4 vinyl acetate 
• 286-20-4 cyclohexane-1,2-epoxide 

Downstream Products

• 1439905-66-4 4-(3-(2H-1,2,3-triazol-2-yl)phenylamino)-2-((1R,2S)-2-ethoxycyclohexylamino)pyrimidin-5-carboxamide 
• 1439909-21-3 C₈H₁₅N₃O 
• 108267-20-5 cis-2-amino-cyclohexanol 

Relevant academic research and scientific papers

SELECTIVE KINASE INHIBITORS

Provided are pyrimidine compounds for inhibiting of Syk kinase, intermediates used in making such compounds, methods for their preparation, pharmaceutical compositions thereof, methods for inhibition Syk kinase activity, and methods for treating conditions mediated at least in part by Syk kinase activity.

Lipase-catalyzed Kinetic Resolution of (+/-)-trans- and cis-2-Azidocycloalkanols

The lipase-catalyzed kinetic resolution of trans- and cis-2-azidocycloalkanols and the preparation of enantiomerically pure trans- and cis-2-aminocycloalkanols are described. Four kinds of lipases were screened for the acetylation of trans- and cis-2-azidocycloalkanols. Among them, Pseudomonas sp. lipases (lipase PS and lipase AK, Amamo Pharmaceutical Co.) showed the highest enantioselectivity. These products were converted to the corresponding 2-aminocycloalkanols to determine their enantiomeric excess (ee) and absolute configurations by HPLC and CD analyses, using (S)-TBMB carboxylic acid [(S)-2-tert-butyl-2-methyl-1,3-benzodioxole-4-carboxylic acid] as the chiral conversion reagent. The results of the CD analysis proved N,O-bis-(S)-TBMB carboxylated cis-2-aminocycloalkanols to adopt a predominantly N-equatorial conformation. The partially resolved trans- and cis-2-aminocycloalkanols, except for trans-2-aminocyclopentanol, were recrystallized from ethyl acetate to give enantiomerically pure forms.