Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2006-02-07
2006-02-07
Lilling, Herbert J. (Department: 1651)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
Reexamination Certificate
active
06995001
ABSTRACT:
This invention provides a two-step enzymatic process for the synthesis of monoprotected diols from symmetric diols.
REFERENCES:
patent: WO 97/22710 (1997-06-01), None
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Per Berglund and Karl Hult, Biocatalytic Synthesis of Enantiopure Compounds Using Lipases, Royal Institute of Technology, Stockholm, Sweden, 21, 633-653 . . . .
Houilleet al, 1996, A remarkably Simple Process for Monoprotecting Diols,. Tetrahedron Letters, 37;5.
Allevip, et al: Lipase-catalysed chemoselective monoacetylation of hydroxyalkylphenols and chemoselective removal of a single acetyl group from their diacetates, Tetrahedron: Asymmetry 9:2915-2924 (1998).
Ciuffreda P. et al: Lipase-catalyzed monoprotection of 1,4-diols in an organic solvent using vinyl benzoate as acyl transfer agent, Tetrahedron Letters 44:3663-3665 (2003).
Banfi L, et al: On the Optimization of Pig Pancreatic Lipase Catalyzed Monoacetylation of Prochiral Diols, Tetrahedron: Asymmetry 6:6:1345-1356 (1995).
Levayer F, et al: Enzyme catalysed resolution of 1,3-diarylpropan-1,3-diols, Tetrahedron: Asymmetry 6:7:1675-1682 (1995).
Gu Jianxin
Ruppen Mark Edward
Goudie Joy S.
Lilling Herbert J.
Wyeth Holdings Corporation
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