Vitamin d analogues

Details Vitamin d analogues Vitamin d analogues

C - Chemistry, Metallurgy

07

D

260/264.3, 260/3

C07D 333/72 (2006.01) C07C 29/40 (2006.01) C07D 237/26 (2006.01) C07D 303/04 (2006.01) C07D 309/12 (2006.01) C07D 487/04 (2006.01) C07F 7/18 (2006.01) C07F 9/53 (2006.01) C07F 9/54 (2006.01) C07F 9/655 (2006.01) C08G 18/61 (2006.01)

Patent

CA 1204752

ABSTRACT Compounds of the general formula Image I wherein R represents a hydrogen atom or a hydroxyl protecting group, Y represents a hydrogen atom or an optionally protected hydroxyl group, X represents the residue of a dienophile and either R1 represents a halogen atom a hydrocarbylsulphonyloxy group or a group of the formula -Z-R3 (in which z represents -O- -S-, -SO-, -NR4- or -CR4R5- and R3, R4 and R5, which may be the same or different, each represent a hydrogen atom or a straight or branched aliphatic group having 1-12 carbon atoms and which may optionally carry one or more substituents) and R2 represents a hydrogen atom or R1 and R2 together represent an oxo group or an optionally substituted alkylidene group, except that R1 and R2 together with the group -CH(CH3)CH- to which they are attached do not represent a group having the branched 17.beta.-hydrocarbyl side chain skeleton of vitamin D2 or vitamin D3 of use in the preparation of novel vitamin D analogues,

414661

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