Enantio and diastereoselective total synthesis of all four stereoisomers of germicidin N
作者:Tsuyoshi Douchi、Masahiro Akitake、Motohiro Sonoda、Yasumasa Sugiyama、Shinji Tanimori
DOI:10.1080/00397911.2020.1745240
日期:2020.5.18
Abstract Germicidin N (3-ethyl-4-hydroxy-6-[(1S, 2 R)−2-hydroxy-1-methylpropyl]-2H-pyran-2-one, 1), a new α-pyrone from the extracts of a Streptomyces sp. derived from marine algae, has been synthesized for the first time as four possible diastereomers from chiral β-hydroxyester ((S)−6 and (R)−9) through the stereoselective alkylation, Claisen condensation followed by cyclization in a straightforward
摘要 Germicidin N (3-ethyl-4-hydroxy-6-[(1S, 2 R)−2-hydroxy-1-methylpropyl]-2H-pyran-2-one, 1),一种来自提取物的新型α-吡喃酮链霉菌属。来自海藻,首次通过立体选择性烷基化、克莱森缩合和直接环化从手性 β-羟基酯((S)-6 和(R)-9)合成四种可能的非对映异构体。图形概要