Effective synthesis of (4r,8r)- and (4r,8s)-enantiomers of 4,8-dimethyldecanal, the aggregational pheromone of the beetlesTeibolium confusum andTribolim castaneum
Stereocontrolled synthesis of (+)-α-skytanthine by means of an intramolecular Pauson–Khand reaction
作者:Kyosuke Kaneda、Toshio Honda
DOI:10.1016/j.tet.2008.10.029
日期:2008.12
Diastereoselective synthesis of (+)-α-skytanthine was established by means of an intramolecularPauson–Khandreaction of N-but-2-yn-1-yl-N-[(2R)-2-methylbut-3-en-1-yl]-1-(2-nitrobenzene)sulfonamide, in which the newly generated stereogenic center was stereoselectively constructed to be R by reflection of the stereochemistry of the methyl group in the starting material.
通过N -but-2-yn-1-yl- N -[(2 R)-2-甲基but-3-en- 1-基] -1-(2-硝基苯)磺酰胺,其中新生成的立体异构中心通过反映起始原料中甲基的立体化学而被立体选择性地构建为R。
Total Synthesis of Emericellamide
A: A Secondary Metabolite of Marine Cyclic Depsipeptide
with Antimicrobial Properties
Emericellamide A is a secondary metabolite of marinecyclicdepsipeptide from the co-culture of the marine-derived fungus Emericella sp. and actinomycete Salinispora arenicola. A general method for the total synthesis of emericellamide A is depicted in this report.
Emericellaamide A 是海洋源性真菌 Emericella sp. 共培养的海洋环缩肽的次级代谢产物。和放线菌 Salinispora arenicola。本报告描述了全合成 emericellaamide A 的一般方法。
Total Synthesis of Complex Biosynthetic Late-Stage Intermediates and Bioconversion by a Tailoring Enzyme from Jerangolid Biosynthesis
作者:Frederick Lindner、Steffen Friedrich、Frank Hahn
DOI:10.1021/acs.joc.8b02047
日期:2018.11.16
A highly convergent access to the late-stage biosynthetic intermediates projerangolid and jerangolid E is presented, and its utility is demonstrated by the synthesis of novel non-natural jerangolid derivatives. The key steps are fragment couplings by Julia–Kocienski olefination and olefin cross metathesis, as well as a stereoselective tetrahydropyran formation by intramolecular oxa-Michael addition