Development of a Concise and Diversity-Oriented Approach for the Synthesis of Plecomacrolides via the Diene−Ene RCM
摘要:
A concise synthesis of the core structures of plecomacrolide with ring sizes varying from 16 to 19 atoms was achieved for the first time by the diene-ene ring-closing olefin metathesis reaction. This approach should allow access to the structurally diverse analogues of plecomacrolide.
Development of a Concise and Diversity-Oriented Approach for the Synthesis of Plecomacrolides via the Diene−Ene RCM
摘要:
A concise synthesis of the core structures of plecomacrolide with ring sizes varying from 16 to 19 atoms was achieved for the first time by the diene-ene ring-closing olefin metathesis reaction. This approach should allow access to the structurally diverse analogues of plecomacrolide.
A 2 : 1 mixture of NCS and Ph3P successfully promoted the anti-dichlorination of olefins to provide corresponding dichlorides, serving as a molecular chlorine surrogate generated in situ.
The enantioselective total synthesis of (+)-hexachlorosulfolipid, a cytotoxin found in the Adriatic mussel Mytilus galloprovincialis, is described. The unique chlorinated hydrocarbon motif of the lipid is successfully furnished by a series of dichlorination reactions of chiral epoxides with chlorophosphonium reagent generated in situ from Ph3P/NCS. The present total synthesis has allowed the confirmation
描述了(+)-六氯磺脂的对映选择性全合成,这是一种在亚得里亚海贻贝Mytilus galloprovincialis中发现的细胞毒素。通过手性环氧化物与从Ph 3 P / NCS原位生成的氯phosph试剂的一系列二氯化反应,成功地提供了脂质独特的氯化烃基序。目前的总合成已经证实了最初由Fattorusso,Ciminiello和同事提出的天然细胞毒性(+)-六氯磺脂的绝对构型。