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  • Title: Total Synthesis and Stereochemical Assignment of Callyspongiolide.
    Author: Zhou J, Gao B, Xu Z, Ye T.
    Journal: J Am Chem Soc; 2016 Jun 08; 138(22):6948-51. PubMed ID: 27227371.
    Abstract:
    Total synthesis of four callyspongiolide stereoisomers led to unambiguous assignment of relative and absolute stereochemistry of the natural product. Key features of the convergent, fully stereocontrolled route include the use of Krische allylation, Kiyooka Aldol reaction, Kociénski-Julia olefination, Still-Gennari olefination, Yamaguchi macrocyclization, and Sonogashira coupling reaction. Biological evaluation of the synthesized compounds against an array of cancer cells revealed that the stereochemistry of the macrolactone core played an important role.
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