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New preparation of triterpenoid-3-sulfates by the use of SO3-DMSO complex
V I Grishkovets1, A E Kondratenko, Chirva VYa
1Department of Organic Chemistry, Simferopol State University, Ukraine.
Advances in Experimental Medicine and Biology
|January 1, 1996
Abstract:
The use of sulfur trioxide-dimethyl sulfoxide (SO3-DMSO) complex in dimethyl sulfoxide solution for the preparation of triterpenoid-3-sulfates with heavily quantitative yields has been described. The high reagent selectivity for equatorial 3-hydroxy groups in presence of an axial 16-hydroxy group was demonstrated.