Synthesis of disulfates of unconjugated and conjugated bile acids.

Abstract
The disulfates of unconjugated, and glycine- and taurine-conjugated bile acids have been synthesized. Cholic acid derivatives appropriately protected were sulfated with sulfur trioxide-triethylamine complex in pyridine in the usual manner. Subsequent hydrolysis and/or sodium borohydride reduction provided the desired disulfates of cholates in satisfactory yields. Dihydroxylated bile acid disulfates were aso prepared. The nuclear magnetic resonance spectral data for bile acid disulfates and related compounds are tabulated.

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