Process for the preparation of optically active...

C - Chemistry – Metallurgy – 07 – D

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C07D 405/06 (2006.01) C07D 319/06 (2006.01) C07D 405/14 (2006.01)

Patent

CA 1340105

A process for the preparation of optically active 3-de-methylmevalonic acid derivatives of the formula I (see fig. I) (3,5-dihydroxy carboxylic acid derivatives) or of the formula II (see fig. II) (.beta.-hydroxy lactones) in which R, R1 and Y have the indicated meanings, is described. The invention furthermore relates to aldehydes of the formula XII (see fig. III) in which M represents the indicated protective groups.

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