作者:Junrong Huang、Wenli Bao、Shuangping Huang、Wei Yang、Zhu Lizhi、Guangyan Du、Chi-Sing Lee
DOI:10.1021/acs.orglett.8b03242
日期:2018.12.7
A concise formalsynthesis of (+)-phomactin A has been achieved. The key features of this synthetic strategy involve a one-pot Prins/Conia-ene cyclization protocol for the construction of the highly functionalized 1-oxadeclin core (AB ring) and a late-stage direct γ-hydroxylation of enone for the installation of the C ring.
ZnI2-catalyzed carbocyclization of arylalkynes leads to the synthesis of polysubstituted dihydro- and tetrahydroquinoline derivatives
作者:Xiaochen Cai、Yongjie Pan、Chaoyang Wang、Guoying Qian、Zhouting Rong
DOI:10.1016/j.tetlet.2020.151993
日期:2020.6
A ZnI2-catalyzed carbocyclization of arylalkynes has been developed for the construction of various polysubstituted dihydro- and tetrahydroquinolinederivatives. This inexpensive method extends the potential of zinc catalysis to the formation of up to three carbon–carbon bonds and three new rings in a single step with high diastereoselectivity.
Chiral Auxiliary Approach for Gold(I)‐Catalyzed Cyclizations
作者:Andrea Cataffo、Miguel Peña‐López、Riccardo Pedrazzani、Antonio M. Echavarren
DOI:10.1002/anie.202312874
日期:2023.12.4
The stereoselective gold(I)-catalyzed cascade cyclization of 1,5-enynes and alkoxycyclization of 1,6-enynes with chiral auxiliaries has been developed, affording, after hydrolysis, synthetically challenging enantioenriched ketones. This chiral auxiliary approach is an alternative to the use of complexchiral catalysts in gold(I)-catalyzed asymmetric cyclizations.