Construction of the Tetracyclic Core of Calyciphylline B-Type <i>Daphniphyllum</i> Alkaloids
作者:Chenglong Du、Jing Fang、Jinyan Chen、Zaimin Liu、Huilin Li、Xiaolei Wang、Xingang Xie、Xuegong She
DOI:10.1021/acs.orglett.9b03322
日期:2019.11.1
A double cyclization strategy was developed to construct the common tetracyclic core of calyciphylline B-type alkaloids. Key features of the synthesis included asymmetric Evans alkylation, ring-closing metathesis reaction, intermolecular amidation, intramolecular aza-Michael addition, and aldol condensation reactions. This strategy may be applied to the total syntheses of this type of natural product
Studies toward the Synthesis of Potent Anti-inflammatory Peptides Solomonamides A and B: Synthesis of a Macrocyclic Skeleton and Key Fragment 4-Amino-6-(2′-amino-4′-hydroxyphenyl)-3-hydroxy-2-methyl-6-oxohexanoic Acid (AHMOA)
作者:K. Kashinath、N. Vasudevan、D. Srinivasa Reddy
DOI:10.1021/ol303149k
日期:2012.12.21
A first synthetic effort toward total synthesis of highly potent solomonamides is disclosed. An efficient strategy to synthesize this class of compounds, along with the synthesis of a core macrocycle (shown in red) and the key fragment AHMOA, is described.