Synthetic steroids. Part IV. The reaction of 3β-hydroxy-5α-cholest-1-ene and 3β-hydroxycholest-4-ene with toluene-p-sulphonyl chloride in pyridine
作者:S. B. Laing、P. J. Sykes
DOI:10.1039/j39680000421
日期:——
The reaction of 3β-hydroxy-5α-cholest-1-ene with toluene-p-sulphonylchloride in pyridine does not yield the expected Δ1-3β-toluene-p-sulphonyl ester but results directly in the production of N-(5α-cholest-1-en-3α-yl)-pyridinium tosylate (44%) and 1α,5-cyclo-5α-cholest-2-ene (22%). Similar rearrangements of the allylic alcohols androst-1-en-3β-ol and 17β-methoxyandrost-1-en-3β-ol are also reported