Synthesis of 3-epi vitamin d3 metabolites and analogs

Details Synthesis of 3-epi vitamin d3 metabolites and analogs Synthesis of 3-epi vitamin d3 metabolites and analogs

C - Chemistry, Metallurgy

07

F

C07F 9/53 (2006.01) C07C 401/00 (2006.01) C07D 303/16 (2006.01) C07D 303/44 (2006.01)

Patent

CA 2271414

The invention relates to a process for the preparation of vitamin D3 compounds of formula I. Image wherein A is a single or a double bond; B is a single, cis-double, trans double or a triple bond; R1 and R2 are independently hydrogen, a C1-C4 alkyl; R3 and R4 are independently a C1-C4 alkyl, a hydroxyalkyl, and a haloalkyl; and X and Y are independently hydrogen or hydroxy in the case when B is a single or a double bond.

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