Enzymatic synthesis of Kdn oligosaccharides by a bacterial α-(2→6)-sialyltransferase
作者:Yasuhiro Kajihara、Shoji Akai、Takahiro Nakagawa、Reiko Sato、Takashi Ebata、Hisashi Kodama、Ken-ichi Sato
DOI:10.1016/s0008-6215(98)00331-0
日期:1999.1
Abstract Synthesis of CMP-deaminoneuraminic acid (CMP-β- d -Kdn) and its enzymatic transfer reaction using bacterial α-(2→6)-sialyltransferase were examined. CMP-β- d -Kdn was prepared from methyl 4,5,7,8,9-penta- O -acetyl-3-deoxy- d - glycero -β- d - galacto -2-nonulopyranosonate ( 2 ) in 24% overall yield. Enzymatic synthesis of Kdn oligosaccharide with CMP-β- d -Kdn (10.2 μmol), methyl β- d -lactosaminide
摘要研究了CMP-脱氨基神经氨酸(CMP-β-d-Kdn)的合成及其利用细菌α-(2→6)-唾液酸转移酶的酶促转移反应。CMP-β-d-Kdn由24%的4,5,7,8,9-戊基-乙酰基-3-脱氧-d-甘油-β-d-半乳糖-2-壬基吡喃磺酸酯(2)制备总产量。用CMP-β-d-Kdn(10.2μmol),甲基β-d-内酰胺酶(7,8.1μmol)和纯化的唾液酸转移酶(80 munits)酶促合成Kdn低聚糖,得到Kdn-α-(2→6)-Gal β-(1→4)-GlcNAc-β-1-OMe的产率为77%。