Diastereoselective Synthesis of Protected 1,3-Diols by Catalytic Diol Relocation
作者:Justin A. Goodwin、Carl F. Ballesteros、Aaron Aponick
DOI:10.1021/acs.orglett.5b02725
日期:2015.11.20
A complementary diastereoselective gold(I) or bismuth(III) catalyzed tandem hemiacetalization/dehydrative cyclization of 1,5-monoallylic diols was developed to access 1,3-dioxolanes and dioxanes. This methodology provides rapid access to protected 1,3-diols under mild conditions with high levels of diastereoselectivity.
Synthesis and evaluation of (−)-Massoialactone and analogues as potential anticancer and anti-inflammatory agents
作者:Maria E.S.B. Barros、Juliano C.R. Freitas、Juliana M. Oliveira、Carlos H.B. da Cruz、Paulo B.N. da Silva、Larissa C.C. de Araújo、Gardenia C.G. Militão、Teresinha G. da Silva、Roberta A. Oliveira、Paulo H. Menezes
DOI:10.1016/j.ejmech.2014.02.013
日期:2014.4
(-)-Massoialactone, an alpha,beta-unsaturated delta-lactone isolated from Cryptocalya massoia, and five analogues were synthesized and their antiproliferative and anti-inflammatory activities were evaluated. The lactones were able to mimic the "core" functional group required for the biological activity of their parent natural compounds suggesting that substantially altered analogues may retain their properties. (C) 2014 Elsevier Masson SAS. All rights reserved.
Synthesis of substituted α,β-unsaturated δ-lactones from vinyl tellurides
作者:Juliana M. Oliveira、Juliano C. R. Freitas、João Valdir Comasseto、Paulo Henrique Menezes
DOI:10.1016/j.tet.2011.02.029
日期:2011.4
new approach for the synthesis of α,β-unsaturated δ-lactones, a unit present in many natural products with interesting biological activities is described. The approach was based on the use of a vinyltelluride, and it is complementary to the methods using ring-closing metathesis. The sequence was performed in good overall yield with retention of the Z-double bond geometry.