[EN] NOVEL PSYMBERIN DERIVATIVES, COMPOSITIONS, AND THEIR USE AS ANTINEOPLASTIC AGENTS [FR] NOUVEAUX DÉRIVÉS ET COMPOSITIONS DE PSYMBÉRINE ET LEUR UTILISATION EN TANT QU'AGENTS ANTINÉOPLASIQUES
showcased in the preparation of advanced psymberin analogues. The biological data of these analogues are presented. 1 Introduction 2 Methodology Development 3 TotalSynthesis of Psymberin 4 Synthesis of Psymberin Analogues: The Discovery of C11-Deoxypsymberin 5 Conclusion (diacetoxyiodo)benzene - psymberin - oxidative cyclization - totalsynthesis - antitumor
The psymberin unsaturated ‘psymberate’ sidechain 7 was synthesized in 7 steps (36% yield) with good diastereoselectivity using commercially available starting material to control the stereochemistry at C4 and C5. The synthesis of seco-psymberin was completed in an efficient manner based on a CuI mediated coupling reaction between vinyl iodide 8 and ‘psymberamide’ 7. In an attempt to synthesize natural