Large-Scale Synthesis of New Pyranoid Building Blocks Based on Aldolase-Catalysed Carbon-Carbon Bond Formation
作者:Michael Wolberg、Ben H. N. Dassen、Martin Schürmann、Stefan Jennewein、Marcel G. Wubbolts、Hans E. Schoemaker、Daniel Mink
DOI:10.1002/adsc.200800224
日期:2008.8.4
A new large-scale approach to the synthetically versatile chloromethyl-substituted, α,β-unsaturated δ-lactone 3 is described. The synthesis is based on a biocatalytic process performed on an industrial scale. Conjugate addition of C-, N-, O-, and S-nucleophiles to lactone 3 affords a variety of new pyranoid building blocks in a highly diastereoselective manner. The operational simplicity of the whole
描述了合成通用的氯甲基取代的α,β-不饱和δ-内酯3的新的大规模方法。该合成基于以工业规模进行的生物催化过程。将C-,N-,O-和S-亲核试剂共轭添加到内酯3中,可以以非对映选择性的方式提供各种新的吡喃类化合物结构单元。整个序列的操作简便性使得可以以诱人的规模准备这些构件。