Using Trost convergent methodology, the synthesis of 1 alpha,25-dihydroxy-2 beta-(3-hydroxypropoxy)vitamin D-3 (eldecalcitol) for the improved and industrial scale production and related putative metabolites of eldecalcitol is summarized. In addition, A-ring diastereomers at the 1- and 3-positions of eldecalcitol are described. The synthesis centers on a key palladium-catalyzed alkylative cyclization and coupling of ene-ynes that constitute the A-ring fragment to bromomethylenes comprising the C/D-ring fragment which affords the requisite triene framework of vitamin D-3 analogs.
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Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USAGeorgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA
Doroudi, Maryam
Chen, Jiaxuan
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Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA
Harvard Univ, Sch Med, Dept Surg, Beth Israel Deaconess Med Ctr, Boston, MA 02115 USAGeorgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA
Chen, Jiaxuan
Boyan, Barbara D.
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Georgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA
Georgia Inst Technol, Wallace H Coulter Dept Biomed Engn, Atlanta, GA 30332 USA
Virginia Commonwealth Univ, Sch Engn, Richmond, VA 23284 USAGeorgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA
Boyan, Barbara D.
Schwartz, Zvi
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Virginia Commonwealth Univ, Sch Engn, Richmond, VA 23284 USA
Univ Texas Hlth Sci Ctr San Antonio, Dept Periodont, San Antonio, TX 78229 USAGeorgia Inst Technol, Sch Biol, Atlanta, GA 30332 USA
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Tokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan
Usuda, Kosuke
Biswas, Tanima
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Waseda Univ, Fac Sci & Technol, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan
Biswas, Tanima
Yamaguchi, Takuya
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Tokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan
Yamaguchi, Takuya
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Akagi, Yusuke
Yasui, Koji
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Tokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan
Yasui, Koji
Uesugi, Motonari
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Kyoto Univ, Inst Integrated Cell Material Sci WPI iCeMS, Sakyo Ku, Kyoto 6068115, Japan
Kyoto Univ, Inst Chem Res, Kyoto 6110011, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan
Uesugi, Motonari
Shimizu, Isao
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Waseda Univ, Fac Sci & Technol, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, JapanTokyo Univ Agr & Technol, Grad Sch Technol, 2-14-16 Naka Cho, Koganei, Tokyo 1848588, Japan