Potential bile acid metabolites. 6. Stereoisomeric 3, 7-dihydroxy-5. beta.-cholanic acids
T Iida, FC Chang
Index: Iida, Takashi; Chang, Frederic C. Journal of Organic Chemistry, 1982 , vol. 47, # 15 p. 2966 - 2972
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Citation Number: 28
Abstract
New synthetic routes to the four possible 3, 7-dihydroxy acids are described. The principal reactions involved were inversions with DMF and MezSO-crown ether and reduction of 12- oxo tosylhydrazones. Inversion of 3a-tosylates by the Me2SO-crown ether method succeeded but that of the corresponding mesylates did not. A table of'H NMR chemical shift reference data of monosubstituted methyl cholanates pertinent to bile acid ...
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