Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2007-08-20
2009-12-01
Lewis, Patrick T (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S123130, C536S115000, C536S018400, C536S122000, C536S004100
Reexamination Certificate
active
07626016
ABSTRACT:
This invention relates to a method for preparing a sucrose-6-ester. The method includes (i) reacting sucrose with a N,N-dimethylcarboxamide dimethyl acetal in an inert aprotic solvent to form a cyclic acetal of formula (I):wherein R is C1-C6alkyl, C3-C20cycloalkyl, C1-C20heterocycloalkyl, aryl, or heteroaryl; and (ii) subjecting the cyclic acetal to a mild acidic or neutral hydrolysis to provide a sucrose-6-ester of formula (II):
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Cai Qing Hai
Li Zi Wen
Liu Shang
Wang Man Tang
Wu Guang Li
Fish & Richardson P.C.
Hebei Sukerui Science and Technology Co., Ltd.
Henry Michael C
Lewis Patrick T
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