作者:Paul R. Blakemore、Philip J. Kocieński、Andrew Morley、Kenneth Muir
DOI:10.1039/a900185i
日期:——
constructed from two key fragments using a modified Julia olefination based on the benzothiazolyl sulfone activator. Key steps in the synthesis of the C1–C10 oxane fragment were (a) a modified Julia olefination using a 1-phenyl-1H-tetrazolyl sulfone as activator and (b) an intramolecular addition of an alkoxide to an α,β-unsaturated ester. Key steps in the synthesis of the C11–C19 polyketide fragment were
使用基于苯并噻唑基砜活化剂的改性Julia烯化反应,由两个关键片段构建天然除草剂除草二烯。合成C1-C10恶烷片段的关键步骤是(a)使用1-苯基-1 H-四唑基砜作为活化剂的朱莉娅(Julia)改性反应,以及(b)分子内将醇盐添加到不饱和的α,β上酯。合成C11–C19聚酮化合物片段的关键步骤是:(a)以樟脑10,2-阿马酸为辅助剂的直接羟醛反应;(b)爱尔兰–克莱森重排和(c)羟基定向的环氧化。