HETEROCYCLES
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Paper | Regular issue | Vol 81, No. 2, 2010, pp.381-394
Published online, 4th December, 2009
Published online, 4th December, 2009
DOI: 10.3987/COM-09-11871
■ Synthesis of 20-Epi-eldecalcitol [20-Epi-1α,25-dihydroxy-2β-(3-hydroxypropoxy)vitamin D3: 20-Epi-ED-71]
Madoka Yoshino, Kohei Eto, Keisuke Takahashi, Jun Ishihara, Susumi Hatakeyama, Yoshiyuki Ono, Hitoshi Saito, and Noboru Kubodera*
*Chugai Pharmaceutical Company, Ltd., 2-1-1, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8324, Japan
Abstract
A convergent synthesis of biologically interesting 20-epi-eldecalcitol which possesses an inverted C-21 methyl substituent at the 20-position of the side chain of 1α,25-dihydroxy-2β-(3-hydroxypropoxy)vitamin D3 (eldecalcitol) is described.
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