Method for the preparation of optically active...

Details Method for the preparation of optically active... Method for the preparation of optically active...

C - Chemistry, Metallurgy

12

P

195/131, 195/65

C12P 41/00 (2006.01) C12P 7/62 (2006.01) C12P 17/02 (2006.01)

Patent

CA 1335185

Method for the production of optically active bicyclo[3.3Ø]octane-dione-carboxylic acid esters according to formula I Image (I), where R1 and R2 jointly represent an oxygen atom or the radical -O-X-O- with X in the meaning of a straight or branched-chain alkylene group with 1 to 7 C-at- oms, or R1 and R2 each represent the radical OR4 with R4 in the meaning of a straight or branched-chain alkyl with 1 to 7 C-atoms, and R3 represents a straight or branched-chain alkyl group with 1 to 10 C-atoms, characterized in that a prochiral bicyclo[3.3Ø]octane- dione-dicarboxylic acid diester according to formula II Image (II), where R1 , R2 and R3 have the above-indicated meaning are enantioselectively saponified and decarboxylated with en- zymes.

551621

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