Tetrahedron Letters p. 4855 - 4858 (1984)
Update date:2022-07-29
Topics:
Tolf, B.-R.
Crowe, D. F.
Johansson, J. G.
Peters, R. H.
Tanabe, M.
Treatment of 1α,2α-methyleneandrostan analog (4) with hydrobromic acid/acetic acid gives an apparent intramolecular homoconjugate ring-opening, which serves as the key step in the synthesis of a new type of pentacyclic steroid analogs (2).
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(2007)
