Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-02-08
2005-02-08
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S068000, C536S058000, C536S063000, C536S107000, C536S110000, C536S115000, C536S124000
Reexamination Certificate
active
06852852
ABSTRACT:
A method of producing a cellueose ether that is predominantly substituted in the C2 position of the anhydroglucose unit of the cellulose is described. The regioselectively substituted saccharide ester produced according to the method of the present invention is selected from the group consisting of oligo-saccharide ester and polysaccharide ester, having a partial average degree of substitution (AS) at the C2 position of its anhydroglucose unit of at least 90% relative to the total AS. Also described is a blood plasma expander comprising the regioselectively substituted ester.
REFERENCES:
patent: 4038482 (1977-07-01), Eastman
patent: 4443595 (1984-04-01), Namikoshi et al.
patent: 4614718 (1986-09-01), Seino et al.
patent: 5270421 (1993-12-01), Dordick et al.
patent: 5618933 (1997-04-01), Dordick et al.
patent: 5681727 (1997-10-01), Poulina et al.
patent: 5703226 (1997-12-01), Nickel et al.
patent: 5714601 (1998-02-01), Tanaka et al.
patent: 5733750 (1998-03-01), Lund et al.
patent: 6489468 (2002-12-01), Klohr et al.
patent: 63-191802 (1988-08-01), None
patent: 9736000 (1997-10-01), None
Mansson et al, “Homogeneous Acetylation of Cellulose Via the Nitrite Ester”, Cellulose Chemistry and Technology, 14, 13-17 (1960).*
Biotechnol. Bioeng., vol. 30, (month unavailable) 1987, pp. 81-87, Lanne et al, Rules for Optimization of Biocatalysis in Organic Solvents.
FEMS Mircobiol. Rev., 16, (month unavailable) 1995, pp. 193-211, Joachim Thiem, Applications of enzymes in synthetic carbohydrate chemistry.
J. Prakt. Chem., 335, (month unavailable) 1993, pp. 109-127, Reidel et al, Enzymatic Protecting Group Techniques in Bioorganic Synthesis.
J. Am. Chem. Soc. (month unavailable) 1987, pp. 3977-3981, Therisod et al, Regioselective Acylation of Secondary Hydroxyl Groups in Sugars Catalyzed by Lipases in Organic Solvents.
Enzyme & Microb. Technology, 20, (month unavailable) 1997, pp. 225-228, MacManus et al Reversal regioselectivity in the enzymatic acylation of secondary hydroxyl groups mediated by organic solvents.
Biotechnol. Letters, vol. 19, No. 6, Jun. 1997, pp. 511-514, Shibatani et al, Enzymatic synthesis Of vinyl sugar ester in dimethylformamide.
Tetrahedron, 54 (month unavailable) 1998, pp. 3971-3982, Mozhaev et al, Regioselective Enzymatic Acylation as a Tool for Producing Solution-Phase Combinatorial Libraries.
Synthesis, (month unavailable) 1993, pp. 895-910, Faber et al, Enzyme-Catalyzed Irreversible Acyl Transfer.
Dicke René
Klemm Dieter
Klohr Erik-Andreas
Koch Wolfgang
Franks James R.
Gil Joseph C.
White Everett
Wilson James O.
Wolff Walsrode AG
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