Chemo-enzymatic process for the preparation of opticaly...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Reexamination Certificate

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07153983

ABSTRACT:
The present invention relates to a novel synthetic process for the enriched preparation of substituted R(+)β-benzyl-γ-butyrolactone (1) as shown in the drawing wherein R1and R2independently or in combination represent the following groups: i.e. R1═R2═H, —OCnH2n+1(where n=1 to 8); R1, and R2together represents —O(CH2)mO— (where m=2 to 4)

REFERENCES:
Daugan et al., J. of Natural Products (1991), vol. 54(1), pp. 110-118.

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