Synthesis of disaccharide methyl glycosides related to the polysaccharide from Klebsiella serotype 40 and a study of their inhibition in the precipitin reaction
作者:Usha B. Maddali、Asim K. Ray、Nirmolendu Roy
DOI:10.1016/0008-6215(90)80085-h
日期:1990.12
Galp (4), beta-L-Rhap-(1----3)-beta-D-Galp (5), beta-D-Galp-(1----2)-alpha-L-Rhap (6), and beta-D-GlcpA-(1----2)-alpha-L-Rhap (7) have been synthesised and their inhibition reactions in the Klebsiella serotype 40 immune system have been studied. The results obtained accord with only one of two structures proposed for the repeating unit of the K40 antigen.
alpha-D-Manp-(1 ---- 4)-alpha-L-Rhap(3),alpha-L-Rhap-(1 ---- 3)-beta-D-Galp(4 ),beta-L-Rhap-(1 ---- 3)-beta-D-Galp(5),beta-D-Galp-(1 ---- 2)-alpha-L-Rhap(6),合成了β-D-GlcpA-(1 ---- 2)-α-L-Rhap(7)并研究了它们在克雷伯菌血清型40免疫系统中的抑制反应。获得的结果仅与为K40抗原的重复单位提出的两个结构之一一致。