Macrocycles by ring-closing-metathesis, XI: Syntheses of (R)-(+)-lasiodiplodin, zeranol and truncated salicylihalamides
作者:Alois Fürstner、Günter Seidel、Nicole Kindler
DOI:10.1016/s0040-4020(99)00302-6
日期:1999.7
Concise, flexible and high yielding approaches to the orsellinic acid type macrolides lasiodiplodin 1 and zeranol 3 are described which involve only metal-assisted or metal-catalyzed CC-bond formations. Key steps are the efficient allylation of aryl triflates 14 and 25 either by Stille or by modified Suzuki coupling reactions, and the high yielding ring closure of the macrocyclic rings by RCM using