[EN] SALTS OF TIOTROPIUM WITH 10-CAMPHORSULFONIC ACID<br/>[FR] SELS DE TIOTROPIUM AVEC L'ACIDE 10-CAMPHRE SULFONIQUE
申请人:ADAMED SP ZOO
公开号:WO2010133457A1
公开(公告)日:2010-11-25
The present invention relates to novel tiotropium salts with 10-camphorsulphonic acid of formula (I), its optical isomers or their mixtures, their monohydrates, their anhydrous crystalline forms and processes for the preparation thereof, as well as to pharmaceutical compositions containing the same and to the use of novel salts for the treatment of respiratory tract diseases. (I)
An efficient and selective method for the synthesis of sulfonic esters from sulfonic acids or sodium sulfonates using polymer-bound primary triazenes based upon the T2* linker has been developed. The purities of the esters obtained are usually greater than 95% without any further purification steps.
Facile esterification of sulfonic acids and carboxylic acids with triethylorthoacetate
作者:John I. Trujillo、Aravamudan S. Gopalan
DOI:10.1016/s0040-4039(00)60124-7
日期:1993.11
Triethylorthoacetate was found to be surprisingly more effective than triethylorthoformate in the esterification of sulfonic acids and carboxylic acids. Using this reagent, esters of sulfonic and carboxylic acids are prepared in high yields.
An improved synthesis of 10-isobornylsultone
作者:Frank W. Lewis、David H. Grayson
DOI:10.1016/j.tetasy.2014.06.016
日期:2014.8
Edminson; Hilditch, Journal of the Chemical Society, 1910, vol. 97, p. 226