Isomerization-Free Sulfonylation and Its Application in the Synthesis of PHA-565272A
摘要:
FeCl3 catalyzed an isomerization-free Friedel-Crafts sulfonylation between 1-naphthalenesulfonyl chloride and halobenzenes. The coupled halide was then displaced using 35% hydrazine in DMSO to provide the Fischer indole precursor. Pure 5-chloro-2-pentanone was the key for a successful Grandberg modification of Fischer indole synthesis that effectively constructed both the indole core and side chain of the target molecule. The development of these methods enabled a rapid preparation of kilogram quantities of PHA-565272A.
Knuesli, Gazzetta Chimica Italiana, 1949, vol. 79, p. 621,625
作者:Knuesli
DOI:——
日期:——
1-(1-Naphthyl)piperazine as a novel template for 5-HT6 serotonin receptor ligands
作者:Mase Lee、Jagadeesh B. Rangisetty、Manik R. Pullagurla、Małgorzata Dukat、Vince Setola、Bryan L. Roth、Richard A. Glennon
DOI:10.1016/j.bmcl.2005.01.031
日期:2005.3
4-Sulfonyl analogs of 1-(1-naphthyl)piperazine bind at human 5-HT6 receptors and represent a novel class of human 5-HT6 receptor ligands. (c) 2005 Elsevier Ltd. All rights reserved.
Backer; Buisman, Recueil des Travaux Chimiques des Pays-Bas, 1945, vol. 64, p. 102,104