Stereoselective synthesis and .alpha.-lithiation of 1-alkoxy polyenes
作者:Patrick G. McDougal、Joseph G. Rico
DOI:10.1021/jo00230a037
日期:1987.10
Water, an Essential Element for a Zn
<sup>II</sup>
‐Catalyzed Asymmetric Quinone Diels‐Alder Reaction: Multi‐Selective Construction of Highly Functionalized
<i>cis</i>
‐Decalins
A ZnII complex of a C2 -chiral bisamidine-type sp2 N bidentate ligand (LR ) possessing two dioxolane rings at both ends catalyzes a highly efficient quinone asymmetric Diels-Alder reaction (qADA) between o-alkoxy-p-benzoquinones and 1-alkoxy-1,3-butadienes to construct highly functionalized chiral cis-decalins, proceeding in up to a >99:1 enantiomer ratio with a high generality in the presence of H2
Total Synthesis of (−)-Nahuoic Acid C<sub>i</sub> (B<sub>ii</sub>)
作者:Qi Liu、Yifan Deng、Amos B. Smith
DOI:10.1021/jacs.7b08683
日期:2017.10.4
A convergent total synthesis of (-)-nahuoic acid Ci(Bii) (3), a novel cis-decalin polyketide, has been achieved. Key synthetic transformations include Type II Anion Relay Chemistry (ARC) to construct the polyol chain, a Ti-catalyzed asymmetric Diels-Alder reaction to generate the cis-decalin skeleton, and a late-stage large fragment union exploiting a Micalizio alkoxide-directed alkyne-alkene coupling