Pd-Catalyzed Cyclization Approach to Chiral A-Ring Synthon for 1α,2β,25-Trihydroxyvitamin D3

Takashi Takahashi; Makoto Nakazawa

doi:10.1055/s-1993-22338

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Synlett 1993; 1993(1): 37-39
DOI: 10.1055/s-1993-22338

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Pd-Catalyzed Cyclization Approach to Chiral A-Ring Synthon for 1α,2β,25-Trihydroxyvitamin D₃

Takashi Takahashi^* , Makoto Nakazawa

^*Department of Chemical Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152, Japan

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Publication Date:
19 March 2002 (online)

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Synthesis of a chiral A-ring synthon for 1α, 2β, 25-trihydroxyvitamin D₃ starting from d-mannitol by using palladium-catalyzed cyclization of the (Z)-vinyl iodide is described.

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