A stereodivergent, two-directional synthesis of stereoisomeric C-linked disaccharide mimetics
作者:Michael Harding、Robert Hodgson、Tahir Majid、Kenneth J. McDowall、Adam Nelson
DOI:10.1039/b208781b
日期:2003.1.13
as templates for the synthesis of some novel C-linked disaccharide analogues. Efficient methods, such as stereoselective reduction and dihydroxylation, were developed for two-directional functionalisation of these templates. Peracetylated derivatives of ten stereoisomeric disaccharide analogues [acetic acid 4,5-diacetoxy-6-methoxy-[(3',4',5'-triacetoxy-6'-methoxytetrahydropyran- 2'-yl)ethyl]tetrahydropyran-3-yl
以双吡喃酮类化合物为模板,合成了1,2-双[(2R,3S,6S)-3-羟基-6-甲氧基-3-氧代-6H-吡喃-2-基]乙烷C-联二糖类似物。开发了有效的方法,例如立体选择性还原和二羟基化,用于这些模板的双向功能化。十种立体异构二糖类似物[乙酸4,5-二乙酰氧基-6-甲氧基-[(3',4',5'-三乙酰氧基-6'-甲氧基四氢吡喃-2'-基)乙基]四氢吡喃-3-基的全乙酰化衍生物酯]是从136种化合物的虚拟文库中合成的;此外,通过在对映选择性步骤中使用对映体配体可以简单地合成另外八种立体异构体。(2S,3S,4R,5R,6R)-6-甲氧基-2- [2'-(((2'R,3'R,4'S,5'R,6'S)-3',4',据估计,与阻遏蛋白LacI结合的5'-三羟基-6'-甲氧基四氢吡喃-2'-基)乙基]四氢吡喃-3,4,5-三醇与异丙基-β-硫代半乳糖苷相似。二糖模拟物被认为是一类新的有趣的C联二糖模