Double Carbonylation Reactions of Enynols and Thiols to Form Thioester Substituted 6-Membered Ring Lactones
作者:Hong Cao、Wen-Jing Xiao、Howard Alper
DOI:10.1002/adsc.200606213
日期:2006.9
The doublecarbonylationreaction of enynols with thiols affords functionalized 6-memberedringlactones. Two kinds of 6-memberedringlactones were obtained by the use of different palladium complexes with added phosphine ligands.
Toward the Total Synthesis ofDisorazole A<sub>1</sub>: Asymmetric Synthesis of the MaskedNorthern Half
作者:H. Martin Hoffmann、Ingo V. Hartung、Ulrike Eggert、Lars Ole Haustedt、Barbara Niess、Peter M. Schäfer
DOI:10.1055/s-2003-41033
日期:——
The stereoselective synthesis of the masked northern half of the antimitotic natural product disorazole A 1 is described involving as key step a Z-selective Wittig olefination of a Cl -C I epoxy aldehyde with a C12-C19 phosphonium iodide.
描述了抗有丝分裂天然产物 disorazole A 1 的掩蔽北半部的立体选择性合成,其中关键步骤是 Cl -Cl 环氧醛与 C12-C19 碘化鏻的 Z 选择性 Wittig 烯化。
Rhodium‐Catalyzed [4+2+1] Cycloaddition of In Situ Generated Ene/Yne‐Ene‐Allenes and CO
作者:Zi‐You Tian、Qi Cui、Cheng‐Hang Liu、Zhi‐Xiang Yu
DOI:10.1002/anie.201805908
日期:2018.11.19
rhodium‐catalyzed [4+2+1] cycloaddition of in situ generated ene/yne‐ene‐allenes and CO to synthesize challenging seven‐membered carbocycles fused with five‐membered rings. This reaction is designed based on the 1,3‐acyloxy migration of ene/yne‐ene‐propargyl esters to ene/yne‐ene‐allenes, followed by oxidative cyclization, CO insertion, and reductive elimination to form the final [4+2+1] cycloadducts.
Studies on the Synthesis of (−)-Spinosyn A: Application of the Steric Directing Group Strategy to Transannular Diels−Alder Reactions
作者:Scott A. Frank、William R. Roush
DOI:10.1021/jo025580s
日期:2002.6.1
highly diastereoselective and enantioselectivesynthesis of the decahydro-as-indacene nucleus 12 of (-)-spinosyn A (1) is reported. By implementing the steric directing group strategy, tricyclic lactone 37 was produced from a remarkably diastereoselective transannularDiels-Alder reaction of lactone 9. The tricyclic core of the natural product was then obtained by using an Ireland-Claisen ring contraction
Chemoenzymatic Late‐Stage Modifications Enable Downstream Click‐Mediated Fluorescent Tagging of Peptides
作者:Alessandro Colombano、Luca Dalponte、Sergio Dall'Angelo、Claudia Clemente、Mohannad Idress、Ahmad Ghazal、Wael E. Houssen
DOI:10.1002/anie.202215979
日期:——
suitable for copper-catalyzed azide-alkyne cycloaddition, metathesis, and inverse-electron-demand Diels-Alder (IEDDA) reactions. A 10-mer tryptophan-containing macrocyclic peptide was tailored by AcyF, and the resulting modified peptide was successfully labelled with a tetrazine–fluorescein conjugate by IEDDA.