Short Regioselective Chemoenzymatic Synthesis and Biological Evaluation of 1-<i>O</i>-Acyl-2-<i>O</i>-(β-<scp>D</scp>-sulfoquinovopyranosyl)-<i>sn</i>-glycerols
作者:Milind Dangate、Laura Franchini、Fiamma Ronchetti、Takanari Arai、Akira Iida、Harukuni Tokuda、Diego Colombo
DOI:10.1002/ejoc.200900943
日期:2009.12
convenient chemoenzymatic synthesis of a new class of non-natural sulfo-glycolipids – 2-O-(β-D-sulfoquinovosyl)-monoacylglycerols (2-O-β-D-SQMG) – derived from 2-O-(β-D-glucopyranosyl)glycerol and carrying acyl chains ofvarious lengths at the 1-position of the sn-glycerol moiety, was performed with the aid of a key step involving regioselective lipase-catalyzed acylation of 2-O-(6-deoxy-6-tosyl-β-D-gl
一种新型非天然磺基糖脂的便捷化学酶促合成 – 2-O-(β-D-磺基奎诺糖基)-单酰基甘油 (2-O-β-D-SQMG) – 衍生自 2-O-(β- D-吡喃葡萄糖基)甘油和在 sn-甘油部分的 1-位携带不同长度的酰基链,是在涉及区域选择性脂肪酶催化的 2-O-(6-脱氧-6-)酰化的关键步骤的帮助下进行的。甲苯磺酰基-β-D-吡喃葡萄糖基)-sn-甘油 (4) 在其 1 位,首次在此报道。在未保护的伯羟基和仲羟基存在下,通过选择性插入的甲苯磺酰基的硫代乙酸酯取代和随后的 Oxone®氧化来制备糖部分,有效地提供了目标化合物,己酰基、十二酰基和十八酰基衍生物 1a–c,在 EBV-EA 体外抗肿瘤启动子试验中测试时,它们是有活性的。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)