Synthesis and biological evaluation of new cross-conjugated dienone marine prostanoid analoguesElectronic supplementary information (ESI) available: 1H NMR, COSY and NOESY spectra. See http://www.rsc.org/suppdata/ob/b4/b404016c/

Publisher Website
Google Scholar
Abstract
The synthesis of a series of brominated cross-conjugated dienones, marine prostanoid analogues, was considered using two cyclopentannelation processes, from enamine (by a domino 3-aza Claisen/Mannich reaction) and from dioxolane ester alkylation followed by intramolecular Wittig reaction. All the compounds synthesized featured the same cross-conjugated dienone system, with a vicinal syn or anti diol on the ω-chain. The replacement of the ω-side-chain of the natural prostanoids with a 1-hydroxyphenyl-butyl moiety gave new prostanoids (32–34) with good cytotoxicities. In a second series of products, the possibility of a shorter α-side-chain bearing a simple phenyl ester was investigated. The results indicated a dramatic increase in the cytotoxicity (39, 40, 43, 44). Finally, in a third series, the ω-1-hydroxyphenyl-butyl was replaced by a 1-hydroxymethyloxybenzyl chain. These simpler compounds (45, 46, 47, 48, 60) are still highly cytotoxic, in the medium range of 60 nM, close to the value of natural punaglandins.

This publication has 0 references indexed in Scilit: