Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2009-05-07
2011-11-01
Jiang, Shaojia Anna (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S018700, C536S020000, C536S055300
Reexamination Certificate
active
08049002
ABSTRACT:
Processes for the synthesis of lipochitooligosaccharides were developed. A fully acylated oligoglucosamine precursor is prepared and reacted with a glucosamine monomer that has an amine protecting phthaloyl group. With removal of the phthaloyl group, a fatty acid may be added on the terminal glucosamine unit, forming a lipochitooligosaccharide. The processes can be adapted for use on a commercial scale.
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Wang et al., Chemical Synthesis of NODRM-1: The Nodulation Factor Involved inRhizobium meliloti-Legume Symbiosis, J. Chem. Soc. Perkin Trans., 1994, vol. 1:623-628.
P. Stangier et al., Solid-Phase Transimidation for the Removal of N-Phthalimido-And-Tetrachlorophthalimido Protecting Groups on Carbohydrates, Synlett., 1996, vol. 2:179-181.
Demont-Caulet et al., Nodule Inducing Activity of SyntheticSinorhizobium melilotiNodulation Factors and Related Lipo-Chitooligosaccharides on Alfalfa. Importance of the Acyl Chain Structure, Plant Physiology, 1999, vol. 120:83-92.
E.I. du Pont de Nemours and Company
Goon Scarlett
Jiang Shaojia Anna
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