A concisetotalsynthesis of (-)-muricatacin and (-)- ISO-cladospolide B has been achieved by using chemoselective cross-metatheses and asymmetric dihydroxylations. These key reactions allow a fast access to α-hydroxybutyrolactones.
通过使用化学选择性交叉复分解和不对称二羟基化,已经实现了 (-)-muricatacin 和 (-)- ISO-cladospolide B 的简明全合成。这些关键反应可以快速获得 α-羟基丁内酯。
Syntheses of Cytosporones A, C, J, K, and N, Metabolites from Medicinal Fungi
作者:Andrew M. Beekman、Russell A. Barrow
DOI:10.1071/ch15144
日期:——
compounds for the first time. The key steps included a recently described homologation of benzoic acid to the analogous phenyl acetate using Birchreductivealkylation conditions, acylation of the appropriate phenyl acetate derivative, and a selective reduction and spontaneous biomimetic lactonization to yield the 3-isochromanone skeleton. The synthesized natural products were evaluated for their biological
Stereochemical Assignment of the Fungal Metabolites Pestalotiopsones D and E through Enantiopure Synthesis
作者:Andrew Michael Beekman、Russell Allan Barrow
DOI:10.1021/np400473u
日期:2013.11.22
of pestalotiopsones D (4) and E (5) were elucidated through total synthesis of both the R and S enantiomers, allowing for the assignment of the stereochemistry of the natural compounds as the (+)-S enantiomers. The key steps include homologation of a substituted benzoic acid to the appropriate phenylacetate derivative using Birchreductivealkylation, an oxa-Michael cyclization induced by microwave irradiation