Highly efficient total synthesis of Δ12-PGJ2, 15-deoxy-Δ12,14-PGJ2, and their analogues
作者:Hukum P. Acharya、Yuichi Kobayashi
DOI:10.1016/j.tet.2006.01.051
日期:2006.4
Palladium-catalyzed reaction of TBS ether of 4-cyclopentene-1,3-diol monoacetate (>95% ee) with an anion derived from methyl malonate and a base such as t-BuOK and LDA proceeded highlyefficiently and reproducibly. The product obtained in >90% isolated yield was transformed in five steps into the key cyclopentenone possessing the α-chain at the γ position. Aldol reaction of this enone with the ω-chain aldehyde afforded
Short Total Synthesis of Δ<sup>12</sup>-Prostaglandin J<sub>2</sub> and Related Prostaglandins. Design, Synthesis, and Biological Evaluation of Macrocyclic Δ<sup>12</sup>-Prostaglandin J<sub>2</sub> Analogues
structurally diverse molecules, the prostaglandins exhibit a wide range of biological properties. Among them are Δ12-prostaglandin J2 (Δ12-PGJ2) and Δ12-prostaglandin J3 (Δ12-PGJ3), whose unusual structural motifs and potent cytotoxicities present unique opportunities for chemical and biological investigations. Herein, we report a short olefin-metathesis-based totalsynthesis of Δ12-PGJ2 and its application