160146-80-5Relevant articles and documents
A new candidate for a properly substituted CD ring component of vitamin D3 via intramolecular asymmetric olefination of a 1,3-cyclopentanedione derivative
Mandai,Kaihara,Tsuji
, p. 5847 - 5849 (2007/10/02)
A highly diastereoselective synthesis of hydrindenone derivative 5 (98% de) was achieved via diastereotopic differentiation of 1,3-cyclopentanedione derivative 4 by intramolecular Horner-Emmons olefination. In addition, the compound 5 was converted to ketone 2, a new building block for 1α,25-dihydroxyvitamin D3 (1).