Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2007-12-04
2007-12-04
Jiang, Shaojia Anna (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
Reexamination Certificate
active
10521022
ABSTRACT:
The present invention relates to an economic synthetic method of 2-deoxy-L-ribose with easy reaction, separation and purification. The present invention consists of four (4) steps including protection, activation of 3- and 4-OH groups, inversion and deprotection steps. In respect to the cost for equipment, reagent and operation, by the present invention, 2-deoxy-L-ribose can be produced more economically because the invention uses 2-deoxy-L-ribose which is abundant in nature and easily synthesized from D-glucose and adopt simple and yielding process.
REFERENCES:
Chinese Patent Office Action for corresponding Chinese Patent Application No. 038166062 dated Mar. 10, 2006.
Michael E. Jung et al., “Efficient Syntheses of L-Ribose and 2-Deoxy L-Ribose From D-Ribose and L-Arabinose”, Tetrahedron Letters, vol. 38, No. 24, pp. 4199-4202 (No. PII: S0040-4039(97)00870-8).
Indian Patent Office Action for corresponding Indian Patent Application No. 186/KOLNP/2005 dated Feb. 6, 2006 (In English).
Jeon Byoung-Chan
Kang Jae-Sung
Lee Sang-Dae
Shin Jeong-Ah
Yun Mi-Hong
Jiang Shaojia Anna
Krishnan Ganapathy
Samchully Pharm. Co., Ltd.
Staas & Halsey , LLP
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