Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Radical -xh acid – or anhydride – acid halide or salt thereof...
Reexamination Certificate
2004-01-28
2009-11-17
Anderson, Rebecca L (Department: 1626)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Radical -xh acid, or anhydride, acid halide or salt thereof...
C514S578000
Reexamination Certificate
active
07619003
ABSTRACT:
A process for producing an optically active compound based on the hydrolysis of an alkenyl ester compound or the cleavage of an alkenyl ether compound. The process uses neither an acidic compound nor a basic compound, and reactants can be reacted in a high concentration. It does not necessitate a buffer, nutrient, etc. unlike enzymatic reactions or reactions using a microorganism. It is a simple process which attains a satisfactory production efficiency. The process, which is for producing an optically active carboxylic acid or optically active alcohol represented by the general formula (VI): (wherein R1, R2, and R3are different groups; and A represents methylene, carbonyl, or a single bond), is characterized by causing water to act on an alkenyl ester or alkenyl ether represented by the general formula (I): (wherein R4, R5, and R6each represents hydrogen, alkyl, etc.) in the presence of a specific transition metal complex having an optically active ligand.
REFERENCES:
patent: 06-080617 (1994-03-01), None
patent: 11-313695 (1999-11-01), None
patent: WO-01/89690 (2001-11-01), None
Mereyala et al.,Tetrahedron, 53(51):17501-17512 (1997).
Luzzio et al.,Tetrahedron: Asymmetry, 13:1173-1180 (2002).
Aoyama Hiroshi
Hori Yoji
Obora Yasushi
Tokunaga Makoto
Tsuji Yasushi
Anderson Rebecca L
Corless Peter F.
Edwards Angell Palmer & & Dodge LLP
Japan Science and Technology Agency
O'Day Christine C.
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