Vitamin d glycosyl orthoesters

Details Vitamin d glycosyl orthoesters Vitamin d glycosyl orthoesters

C - Chemistry, Metallurgy

07

H

260/212, 260/227

C07H 9/04 (2006.01) C07C 401/00 (2006.01) C07H 15/08 (2006.01) C08B 37/00 (2006.01)

Patent

CA 1257251

ABSTRACT OF THE DISCLOSURE A compound which is biologically active in main- taining calcium and phosphorous metabolism in animals, selected from the group consisting of formula (IA) and (IB): (I) Image Image (IA) (IB) wherein the bond between carbons C-22 and C-23 is single or double; Y is hydrogen, F, -CH3 or -CH2CH3; Z is F, H or X; Y' is H, -CH3 or CH2CH3; Z' is F or H; Qa is CF3 or CH2X; Qb is CF3 or CH3; X is selected from the group consisting of hydrogen and -OR1, wherein R1 is hydrogen or an orthoester glycoside radical of the formula (II) Image (II) where A represents a glucofuranosyl or glucopyranosyl ring; R2 is hydrogen, lower alkyl, aralkyl, or aryl; and R3 is hydrogen or a straight or branched chain glycosidic residue containing 1-100 glycosidic units per residue; with the proviso that at least one of the R1 is an orthoester glycoside moiety of formula (II).

480753

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