Synthesis of Phosphorylated and Sulfated Glycosyl Serines in the Linkage Region of the Glycosaminoglycans
摘要:
We synthesized novel acidic glycans having acidic groups located in the linkage region of the glycosaminoglcans (GAGs). The targeted compounds, beta -D-Xyl(2P)-Ser (1), beta -D-Gal(+/- 6S)-(1 -->4)-beta- D-Xyl(2P)-Ser (3 and 2), beta -D-Gal(+/- 6S)-(1 -->3)-beta -D-Gal-(1 -->4)-beta -D-Xyl(2P)-Ser (5 and 4), and beta -D-Gal- (1 -->3)-beta -D-Gal(6S)-(1 -->4)-beta -D-Xyl(2P)-Ser (6) contain phosphate and/or sulfate at the specified positions. Some of them (3,5, and 6) are the first synthesized examples of natural-type glycoconjugates that simultaneously possess phosphate and sulfate as well as carboxylic acid.
Synthesis of Phosphorylated and Sulfated Glycosyl Serines in the Linkage Region of the Glycosaminoglycans
摘要:
We synthesized novel acidic glycans having acidic groups located in the linkage region of the glycosaminoglcans (GAGs). The targeted compounds, beta -D-Xyl(2P)-Ser (1), beta -D-Gal(+/- 6S)-(1 -->4)-beta- D-Xyl(2P)-Ser (3 and 2), beta -D-Gal(+/- 6S)-(1 -->3)-beta -D-Gal-(1 -->4)-beta -D-Xyl(2P)-Ser (5 and 4), and beta -D-Gal- (1 -->3)-beta -D-Gal(6S)-(1 -->4)-beta -D-Xyl(2P)-Ser (6) contain phosphate and/or sulfate at the specified positions. Some of them (3,5, and 6) are the first synthesized examples of natural-type glycoconjugates that simultaneously possess phosphate and sulfate as well as carboxylic acid.
Stereoselective syntheses of phosphorylated and sulfated glycosyl serines in glycosaminoglycan for biological probes
作者:Jun-ichi Tamura、Junko Nishihara
DOI:10.1016/s0960-894x(99)00300-5
日期:1999.7
Phosphorylated glycosyl serines of glycosaminoglycan with/without sulfate: beta-D-Xyl(2P)-Ser (1) and beta-D-Gal(+/-6S)-(1-->4)-beta-D-Xyl(2P)-Ser (2, 3) were suitably designed for biological probes. These oligosaccharides were synthesized in a stereocontrolled manner. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis of Phosphorylated and Sulfated Glycosyl Serines in the Linkage Region of the Glycosaminoglycans
作者:Jun-ichi Tamura、Junko Nishihara
DOI:10.1021/jo001540h
日期:2001.5.1
We synthesized novel acidic glycans having acidic groups located in the linkage region of the glycosaminoglcans (GAGs). The targeted compounds, beta -D-Xyl(2P)-Ser (1), beta -D-Gal(+/- 6S)-(1 -->4)-beta- D-Xyl(2P)-Ser (3 and 2), beta -D-Gal(+/- 6S)-(1 -->3)-beta -D-Gal-(1 -->4)-beta -D-Xyl(2P)-Ser (5 and 4), and beta -D-Gal- (1 -->3)-beta -D-Gal(6S)-(1 -->4)-beta -D-Xyl(2P)-Ser (6) contain phosphate and/or sulfate at the specified positions. Some of them (3,5, and 6) are the first synthesized examples of natural-type glycoconjugates that simultaneously possess phosphate and sulfate as well as carboxylic acid.